From e26881ec2fa9a255bc0d8537c1cd45897ad8bffe Mon Sep 17 00:00:00 2001
From: SpecialX <47072643+wangxiner55@users.noreply.github.com>
Date: Wed, 11 Jun 2025 15:02:20 +0800
Subject: [PATCH] exam_service

---
 Entities/Contracts/AssignmentGroup.cs         |   12 +-
 Entities/Contracts/AssignmentQuestion.cs      |   12 +-
 Entities/Contracts/Question.cs                |    3 +
 Entities/DTO/ApiResponse.cs                   |   38 +-
 Entities/DTO/ExamDto.cs                       |   23 +-
 TechHelper.Client/Exam/Exam.cs                |  410 +++----
 TechHelper.Client/Exam/Exam/ExamParse.cs      |  627 ----------
 .../Exam/Exam/QuestionCard.razor              |   43 -
 .../Exam/SubMajorQuestionGroupDisplay.razor   |   43 -
 .../Exam/ExamPaperExtensions .cs              |  220 ++++
 TechHelper.Client/Exam/ExamParse.cs           |  740 +++++++++++
 TechHelper.Client/Exam/ExamService.cs         |   49 +-
 TechHelper.Client/Exam/IExamService.cs        |    3 +
 .../HttpInterceptorHandlerService.cs          |    1 -
 TechHelper.Client/Layout/MainLayout.razor     |   37 +-
 TechHelper.Client/Layout/NavBar.razor         |    4 +-
 .../Layout/RedirectToLogin.razor              |    2 +-
 .../Pages/Author/Registration.razor           |    4 -
 TechHelper.Client/Pages/Editor/Test.razor     |   50 -
 .../Pages/Editor/TextEditor.razor             |   50 +
 .../Pages/Exam/ChoiceQuestion.razor           |    1 -
 TechHelper.Client/Pages/Exam/ExamCreate.razor |  132 ++
 TechHelper.Client/Pages/Exam/ExamEdit.razor   |   15 +
 .../Pages/Exam/ExamGroupView.razor            |   48 +
 .../Pages/Exam/ExamManager.razor              |   55 +
 .../Pages/Exam/ExamPreview.razor              |   37 +
 TechHelper.Client/Pages/Exam/ExamView.razor   |   23 +
 TechHelper.Client/Pages/Exam/Index.razor      |    7 +
 .../Pages/Exam/ParseRoleConfig.razor          |  127 ++
 .../Pages/Exam/QuestionBase.razor             |   11 -
 .../Pages/Exam/QuestionCard.razor             |   36 +
 .../Pages/Exam/QuestionGroup.razor            |    4 -
 .../Pages/Exam/QuestionGroupDisplay.razor     |   69 --
 TechHelper.Client/Pages/Exam/_Imports.razor   |    2 +
 TechHelper.Client/Pages/Home.razor            |   97 ++
 TechHelper.Client/Program.cs                  |   11 +
 TechHelper.Client/Shared/ExamLayout.razor     |   18 +
 TechHelper.Client/Shared/ExamNavMenu.razor    |   22 +
 TechHelper.Client/TechHelper.Client.csproj    |    8 +
 .../Context/AutoMapperProFile.cs              |   27 +-
 .../AssignmentGroupConfiguration.cs           |    6 +-
 .../AssignmentQuestionConfiguration.cs        |    2 +-
 .../Controllers/ExamController.cs             |   74 ++
 ...ner.cs => 20250610025325_init.Designer.cs} |   27 +-
 ...8090233_init.cs => 20250610025325_init.cs} |   34 +-
 ...025810_assignment-not_required.Designer.cs | 1091 +++++++++++++++++
 .../20250610025810_assignment-not_required.cs |   93 ++
 .../ApplicationContextModelSnapshot.cs        |   27 +-
 TechHelper.Server/Program.cs                  |    2 +
 TechHelper.Server/Services/ExamService.cs     |  203 ++-
 TechHelper.Server/Services/IExamService.cs    |    2 +-
 TechHelper.Server/appsettings.json            |    2 +-
 52 files changed, 3510 insertions(+), 1174 deletions(-)
 delete mode 100644 TechHelper.Client/Exam/Exam/ExamParse.cs
 delete mode 100644 TechHelper.Client/Exam/Exam/QuestionCard.razor
 delete mode 100644 TechHelper.Client/Exam/Exam/SubMajorQuestionGroupDisplay.razor
 create mode 100644 TechHelper.Client/Exam/ExamPaperExtensions .cs
 create mode 100644 TechHelper.Client/Exam/ExamParse.cs
 delete mode 100644 TechHelper.Client/Pages/Editor/Test.razor
 create mode 100644 TechHelper.Client/Pages/Editor/TextEditor.razor
 delete mode 100644 TechHelper.Client/Pages/Exam/ChoiceQuestion.razor
 create mode 100644 TechHelper.Client/Pages/Exam/ExamCreate.razor
 create mode 100644 TechHelper.Client/Pages/Exam/ExamEdit.razor
 create mode 100644 TechHelper.Client/Pages/Exam/ExamGroupView.razor
 create mode 100644 TechHelper.Client/Pages/Exam/ExamManager.razor
 create mode 100644 TechHelper.Client/Pages/Exam/ExamPreview.razor
 create mode 100644 TechHelper.Client/Pages/Exam/ExamView.razor
 create mode 100644 TechHelper.Client/Pages/Exam/Index.razor
 create mode 100644 TechHelper.Client/Pages/Exam/ParseRoleConfig.razor
 delete mode 100644 TechHelper.Client/Pages/Exam/QuestionBase.razor
 create mode 100644 TechHelper.Client/Pages/Exam/QuestionCard.razor
 delete mode 100644 TechHelper.Client/Pages/Exam/QuestionGroup.razor
 delete mode 100644 TechHelper.Client/Pages/Exam/QuestionGroupDisplay.razor
 create mode 100644 TechHelper.Client/Pages/Exam/_Imports.razor
 create mode 100644 TechHelper.Client/Shared/ExamLayout.razor
 create mode 100644 TechHelper.Client/Shared/ExamNavMenu.razor
 create mode 100644 TechHelper.Server/Controllers/ExamController.cs
 rename TechHelper.Server/Migrations/{20250528090233_init.Designer.cs => 20250610025325_init.Designer.cs} (97%)
 rename TechHelper.Server/Migrations/{20250528090233_init.cs => 20250610025325_init.cs} (96%)
 create mode 100644 TechHelper.Server/Migrations/20250610025810_assignment-not_required.Designer.cs
 create mode 100644 TechHelper.Server/Migrations/20250610025810_assignment-not_required.cs

diff --git a/Entities/Contracts/AssignmentGroup.cs b/Entities/Contracts/AssignmentGroup.cs
index f909797..623fa7d 100644
--- a/Entities/Contracts/AssignmentGroup.cs
+++ b/Entities/Contracts/AssignmentGroup.cs
@@ -15,10 +15,9 @@ namespace Entities.Contracts
 		[Column("id")]
 		public Guid Id { get; set; }
 
-		[Required]
 		[Column("assignment")]
 		[ForeignKey("Assignment")]
-		public Guid AssignmentId { get; set; }
+		public Guid? AssignmentId { get; set; }
 
 		[Required]
 		[Column("title")]
@@ -31,7 +30,7 @@ namespace Entities.Contracts
 
 
 		[Column("total_points")]
-		public decimal? TotalPoints { get; set; }
+		public float? TotalPoints { get; set; }
 
 		[Column("number")]
 		public byte Number { get; set; }
@@ -42,9 +41,12 @@ namespace Entities.Contracts
 		[Column("deleted")]
 		public bool IsDeleted { get; set; }
 
+		[Column("valid_question_group")]
+		public bool ValidQuestionGroup { get; set; }
+
 		// Navigation Properties
-		public Assignment Assignment { get; set; }
-		public AssignmentGroup ParentAssignmentGroup { get; set;}
+		public Assignment? Assignment { get; set; }
+		public AssignmentGroup? ParentAssignmentGroup { get; set;}
 		public ICollection<AssignmentGroup> ChildAssignmentGroups { get; set; }
 		public ICollection<AssignmentQuestion> AssignmentQuestions { get; set; }
 
diff --git a/Entities/Contracts/AssignmentQuestion.cs b/Entities/Contracts/AssignmentQuestion.cs
index 2e0ca0e..d36e5f6 100644
--- a/Entities/Contracts/AssignmentQuestion.cs
+++ b/Entities/Contracts/AssignmentQuestion.cs
@@ -21,21 +21,23 @@ namespace Entities.Contracts
 		[ForeignKey("Question")]
 		public Guid QuestionId { get; set; }
 
+		[Required]
+		[Column("group_id")]
+		[ForeignKey("AssignmentGroup")]
+		public Guid AssignmentGroupId { get; set; }
+
+
 		[Required]
 		[Column("question_number")]
 		public byte QuestionNumber { get; set; }
 
+
 		[Column("created_at")]
 		public DateTime CreatedAt { get; set; }
 
 		[Column("score")]
 		public float? Score { get; set; }
 
-		[Required]
-		[Column("detail_id")]
-		[ForeignKey("AssignmentGroup")]
-		public Guid AssignmentGroupId { get; set; }
-
 		[Column("deleted")]
 		public bool IsDeleted { get; set; }
 
diff --git a/Entities/Contracts/Question.cs b/Entities/Contracts/Question.cs
index e09c247..fc2f7c8 100644
--- a/Entities/Contracts/Question.cs
+++ b/Entities/Contracts/Question.cs
@@ -50,6 +50,9 @@ namespace Entities.Contracts
 		[Column("deleted")]
 		public bool IsDeleted { get; set; }
 
+		[Column("valid_question")]
+		public bool ValidQuestion { get; set; }
+
 		// Navigation Properties
 		public User Creator { get; set; }
 		public ICollection<AssignmentQuestion> AssignmentQuestions { get; set; }
diff --git a/Entities/DTO/ApiResponse.cs b/Entities/DTO/ApiResponse.cs
index cb05d8b..234c81f 100644
--- a/Entities/DTO/ApiResponse.cs
+++ b/Entities/DTO/ApiResponse.cs
@@ -3,21 +3,47 @@
 	public class ApiResponse
 	{
 		public ApiResponse(string message, bool status = false)
-		{
-			this.Message = message;
-			this.Status = status;
-		}
+	: this(status, message, null) { }
+
 
 		public ApiResponse(bool status, object result)
+			: this(status, string.Empty, result) { }
+
+
+
+		/// <summary>
+		/// 创建一个表示成功响应的 ApiResponse 实例。
+		/// </summary>
+		/// <param name="message">成功消息。</param>
+		/// <param name="result">可选的返回数据。</param>
+		/// <returns>ApiResponse 实例。</returns>
+		public static ApiResponse Success(string message = "操作成功。", object? result = null)
 		{
-			this.Status = status;
-			this.Result = result;
+			return new ApiResponse(true, message, result);
+		}
+
+		/// <summary>
+		/// 创建一个表示失败响应的 ApiResponse 实例。
+		/// </summary>
+		/// <param name="message">错误消息。</param>
+		/// <param name="result">可选的错误详情或数据。</param>
+		/// <returns>ApiResponse 实例。</returns>
+		public static ApiResponse Error(string message = "操作失败。", object? result = null)
+		{
+			return new ApiResponse(false, message, result);
 		}
 
 		public ApiResponse()
 		{
 		}
 
+		private ApiResponse(bool status, string message, object? result)
+		{
+			Status = status;
+			Message = message;
+			Result = result;
+		}
+
 		public string Message { get; set; }
 
 		public bool Status { get; set; }
diff --git a/Entities/DTO/ExamDto.cs b/Entities/DTO/ExamDto.cs
index 0a95e1a..6f0229d 100644
--- a/Entities/DTO/ExamDto.cs
+++ b/Entities/DTO/ExamDto.cs
@@ -3,31 +3,33 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using System.Xml.Serialization;
 
 namespace Entities.DTO
 {
 	public class ExamDto
 	{
 		public Guid? AssignmentId { get; set; }
+		public string CreaterEmail { get; set; }	
 		public string AssignmentTitle { get; set; } = string.Empty;
 		public string Description { get; set; }
 		public string SubjectArea { get; set; }
-		public List<QuestionGroupDto> QuestionGroups { get; set; } = new List<QuestionGroupDto>();
+		public QuestionGroupDto QuestionGroups { get; set; } = new QuestionGroupDto();
 	}
 
 	public class QuestionGroupDto
 	{
-		public int Index { get; set; } 
+		public byte Index { get; set; } 
 
-		public string Title { get; set; }
+		public string? Title { get; set; }
 
-		public int Score { get; set; }
-
-		public string QuestionReference { get; set; } 
+		public float Score { get; set; }
 
+		public string? Descript { get; set; } 
 		public List<SubQuestionDto> SubQuestions { get; set; } = new List<SubQuestionDto>();
 
 		public List<QuestionGroupDto> SubQuestionGroups { get; set; } = new List<QuestionGroupDto>();
+		public bool ValidQuestionGroup { get; set; } = false;
 	}
 
 	public class SubQuestionDto
@@ -35,16 +37,17 @@ namespace Entities.DTO
 
 		public byte Index { get; set; } 
 
-		public string Stem { get; set; }
+		public string? Stem { get; set; }
 
 		public float Score { get; set; }
 
 		public List<OptionDto> Options { get; set; } = new List<OptionDto>();
 
-		public string SampleAnswer { get; set; } 
+		public string? SampleAnswer { get; set; } 
 
-		public string QuestionType { get; set; } 
-		public string DifficultyLevel { get; set; } 
+		public string? QuestionType { get; set; } 
+		public string? DifficultyLevel { get; set; }
+		public bool ValidQuestion { get; set; } = false;
 
 	}
 
diff --git a/TechHelper.Client/Exam/Exam.cs b/TechHelper.Client/Exam/Exam.cs
index 0737646..26f6e50 100644
--- a/TechHelper.Client/Exam/Exam.cs
+++ b/TechHelper.Client/Exam/Exam.cs
@@ -6,244 +6,244 @@ using System.IO; // 用于 XML 反序列化
 namespace TechHelper.Client.Exam
 {
 
-	[XmlRoot("EP")] 
-	public class StringsList
-	{
+	//[XmlRoot("EP")] 
+	//public class StringsList
+	//{
 
-		[XmlElement("Q")] 
-		public List<string> Items { get; set; }
-	}
+	//	[XmlElement("Q")] 
+	//	public List<string> Items { get; set; }
+	//}
 
-	// XML 根元素 <EP>
-	[XmlRoot("EP")]
-	public class ExamPaper
-	{
-		// XML 特性：<QGs> 包含 <QG> 列表
-		[XmlArray("QGs")]
-		[XmlArrayItem("QG")]
-		[JsonProperty("QuestionGroups")]
-		public List<QuestionGroup> QuestionGroups { get; set; } = new List<QuestionGroup>();
-	}
+	//// XML 根元素 <EP>
+	//[XmlRoot("EP")]
+	//public class ExamPaper
+	//{
+	//	// XML 特性：<QGs> 包含 <QG> 列表
+	//	[XmlArray("QGs")]
+	//	[XmlArrayItem("QG")]
+	//	[JsonProperty("QuestionGroups")]
+	//	public List<QuestionGroup> QuestionGroups { get; set; } = new List<QuestionGroup>();
+	//}
 
-	[XmlRoot("QG")]
-	public class QuestionGroup
-	{
-		// JSON 特性
-		[JsonProperty("题号")]
-		// XML 特性：作为 <QG Id="X"> 属性
-		[XmlAttribute("Id")]
-		public byte Id { get; set; }
+	//[XmlRoot("QG")]
+	//public class QuestionGroup
+	//{
+	//	// JSON 特性
+	//	[JsonProperty("题号")]
+	//	// XML 特性：作为 <QG Id="X"> 属性
+	//	[XmlAttribute("Id")]
+	//	public byte Id { get; set; }
 
-		[JsonProperty("标题")]
-		[XmlElement("T")] // T for Title
-		public string Title { get; set; }
+	//	[JsonProperty("标题")]
+	//	[XmlElement("T")] // T for Title
+	//	public string Title { get; set; }
 
-		[JsonProperty("分值")]
-		[XmlAttribute("S")] // S for Score
-		public int Score { get; set; }
+	//	[JsonProperty("分值")]
+	//	[XmlAttribute("S")] // S for Score
+	//	public int Score { get; set; }
 
-		[JsonProperty("题目引用")]
-		[XmlElement("QR")] // QR for QuestionReference，作为 <QR> 元素
-		public string QuestionReference { get; set; } = ""; // 初始化为空字符串
+	//	[JsonProperty("题目引用")]
+	//	[XmlElement("QR")] // QR for QuestionReference，作为 <QR> 元素
+	//	public string QuestionReference { get; set; } = ""; // 初始化为空字符串
 
-		[JsonProperty("子题目")]
-		[XmlArray("SQs")] // SQs 包含 <SQ> 列表
-		[XmlArrayItem("SQ")]
-		public List<SubQuestion> SubQuestions { get; set; } = new List<SubQuestion>();
+	//	[JsonProperty("子题目")]
+	//	[XmlArray("SQs")] // SQs 包含 <SQ> 列表
+	//	[XmlArrayItem("SQ")]
+	//	public List<SubQuestion> SubQuestions { get; set; } = new List<SubQuestion>();
 
-		[JsonProperty("子题组")]
-		[XmlArray("SQGs")] // SQGs 包含 <QG> 列表 (嵌套题组)
-		[XmlArrayItem("QG")]
-		public List<QuestionGroup> SubQuestionGroups { get; set; } = new List<QuestionGroup>();
-	}
+	//	[JsonProperty("子题组")]
+	//	[XmlArray("SQGs")] // SQGs 包含 <QG> 列表 (嵌套题组)
+	//	[XmlArrayItem("QG")]
+	//	public List<QuestionGroup> SubQuestionGroups { get; set; } = new List<QuestionGroup>();
+	//}
 
-	// 子题目类
-	public class SubQuestion
-	{
+	//// 子题目类
+	//public class SubQuestion
+	//{
 
-		[JsonProperty("子题号")]
-		[XmlAttribute("Id")] // Id for SubId
-		public byte SubId { get; set; }
+	//	[JsonProperty("子题号")]
+	//	[XmlAttribute("Id")] // Id for SubId
+	//	public byte SubId { get; set; }
 
-		[JsonProperty("题干")]
-		[XmlElement("T")] // T for Text (Stem)
-		public string Stem { get; set; }
+	//	[JsonProperty("题干")]
+	//	[XmlElement("T")] // T for Text (Stem)
+	//	public string Stem { get; set; }
 
-		[JsonProperty("分值")]
-		[XmlAttribute("S")] // S for Score
-		public int Score { get; set; } // 分值通常为整数
+	//	[JsonProperty("分值")]
+	//	[XmlAttribute("S")] // S for Score
+	//	public int Score { get; set; } // 分值通常为整数
 
-		[JsonProperty("选项")]
-		[XmlArray("Os")] // Os 包含 <O> 列表
-		[XmlArrayItem("O")]
-		public List<Option> Options { get; set; } = new List<Option>();
+	//	[JsonProperty("选项")]
+	//	[XmlArray("Os")] // Os 包含 <O> 列表
+	//	[XmlArrayItem("O")]
+	//	public List<Option> Options { get; set; } = new List<Option>();
 
-		[JsonProperty("示例答案")]
-		[XmlElement("SA")] // SA for SampleAnswer
-		public string SampleAnswer { get; set; } = "";
-	}
+	//	[JsonProperty("示例答案")]
+	//	[XmlElement("SA")] // SA for SampleAnswer
+	//	public string SampleAnswer { get; set; } = "";
+	//}
 
-	// 选项类，用于适配 <O V="X"/> 结构
-	public class Option
-	{
-		// XML 特性：作为 <O V="X"> 属性
-		[XmlAttribute("V")] // V for Value
-							// JSON 特性：如果 JSON 中的选项是 {"Value": "A"} 这样的对象，则需要 JsonProperty("Value")
-							// 但如果 JSON 选项只是 ["A", "B"] 这样的字符串数组，则此Option类不适合JSON Options
-							// 需要明确你的JSON Options的结构。我假设你JSON Options是 List<string>
-							// 如果是 List<string>，则Options属性在SubQuestion中直接是List<string>，Option类则不需要
-							// 但根据你的精简XML需求，Option类是必要的。
-							// 所以这里需要你自己根据实际JSON Options结构选择。
-							// 为了兼容XML，我会保留Option类，但如果JSON是List<string>，Options属性会很复杂
-		public string Value { get; set; }
-	}
+	//// 选项类，用于适配 <O V="X"/> 结构
+	//public class Option
+	//{
+	//	// XML 特性：作为 <O V="X"> 属性
+	//	[XmlAttribute("V")] // V for Value
+	//						// JSON 特性：如果 JSON 中的选项是 {"Value": "A"} 这样的对象，则需要 JsonProperty("Value")
+	//						// 但如果 JSON 选项只是 ["A", "B"] 这样的字符串数组，则此Option类不适合JSON Options
+	//						// 需要明确你的JSON Options的结构。我假设你JSON Options是 List<string>
+	//						// 如果是 List<string>，则Options属性在SubQuestion中直接是List<string>，Option类则不需要
+	//						// 但根据你的精简XML需求，Option类是必要的。
+	//						// 所以这里需要你自己根据实际JSON Options结构选择。
+	//						// 为了兼容XML，我会保留Option类，但如果JSON是List<string>，Options属性会很复杂
+	//	public string Value { get; set; }
+	//}
 
-	// 独立的服务类来处理序列化和反序列化
-	public static class ExamParser
-	{
-		// JSON 反序列化方法
-		public static List<T> ParseExamJson<T>(string jsonContent)
-		{
-			string cleanedJson = jsonContent.Trim();
+	//// 独立的服务类来处理序列化和反序列化
+	//public static class ExamParser
+	//{
+	//	// JSON 反序列化方法
+	//	public static List<T> ParseExamJson<T>(string jsonContent)
+	//	{
+	//		string cleanedJson = jsonContent.Trim();
 
-			// 移除可能存在的 Markdown 代码块标记
-			if (cleanedJson.StartsWith("```json") && cleanedJson.EndsWith("```"))
-			{
-				cleanedJson = cleanedJson.Substring("```json".Length, cleanedJson.Length - "```json".Length - "```".Length).Trim();
-			}
-			// 移除可能存在的单引号包围（如果 AI 偶尔会这样输出）
-			if (cleanedJson.StartsWith("'") && cleanedJson.EndsWith("'"))
-			{
-				cleanedJson = cleanedJson.Substring(1, cleanedJson.Length - 2).Trim();
-			}
+	//		// 移除可能存在的 Markdown 代码块标记
+	//		if (cleanedJson.StartsWith("```json") && cleanedJson.EndsWith("```"))
+	//		{
+	//			cleanedJson = cleanedJson.Substring("```json".Length, cleanedJson.Length - "```json".Length - "```".Length).Trim();
+	//		}
+	//		// 移除可能存在的单引号包围（如果 AI 偶尔会这样输出）
+	//		if (cleanedJson.StartsWith("'") && cleanedJson.EndsWith("'"))
+	//		{
+	//			cleanedJson = cleanedJson.Substring(1, cleanedJson.Length - 2).Trim();
+	//		}
 
-			try
-			{
-				// 注意：这里假设你的 JSON 根直接是一个 QuestionGroup 列表
-				// 如果你的 JSON 根是 { "QuestionGroups": [...] }，则需要先反序列化到 ExamPaper
-				List<T> examQuestions = JsonConvert.DeserializeObject<List<T>>(cleanedJson);
-				return examQuestions;
-			}
-			catch (JsonSerializationException ex)
-			{
-				Console.WriteLine($"JSON 反序列化错误: {ex.Message}");
-				Console.WriteLine($"内部异常: {ex.InnerException?.Message}");
-				return null;
-			}
-			catch (Exception ex)
-			{
-				Console.WriteLine($"处理错误: {ex.Message}");
-				return null;
-			}
-		}
+	//		try
+	//		{
+	//			// 注意：这里假设你的 JSON 根直接是一个 QuestionGroup 列表
+	//			// 如果你的 JSON 根是 { "QuestionGroups": [...] }，则需要先反序列化到 ExamPaper
+	//			List<T> examQuestions = JsonConvert.DeserializeObject<List<T>>(cleanedJson);
+	//			return examQuestions;
+	//		}
+	//		catch (JsonSerializationException ex)
+	//		{
+	//			Console.WriteLine($"JSON 反序列化错误: {ex.Message}");
+	//			Console.WriteLine($"内部异常: {ex.InnerException?.Message}");
+	//			return null;
+	//		}
+	//		catch (Exception ex)
+	//		{
+	//			Console.WriteLine($"处理错误: {ex.Message}");
+	//			return null;
+	//		}
+	//	}
 
 
 
-		#region TEST
-		[XmlRoot("User")]
-		public class User
-		{
-			[XmlAttribute("id")]
-			public string Id { get; set; }
+	//	#region TEST
+	//	[XmlRoot("User")]
+	//	public class User
+	//	{
+	//		[XmlAttribute("id")]
+	//		public string Id { get; set; }
 
-			[XmlElement("PersonalInfo")]
-			public PersonalInfo PersonalInfo { get; set; }
+	//		[XmlElement("PersonalInfo")]
+	//		public PersonalInfo PersonalInfo { get; set; }
 
-			[XmlArray("Roles")] // 包装元素 <Roles>
-			[XmlArrayItem("Role")] // 集合中的每个项是 <Role>
-			public List<Role> Roles { get; set; } = new List<Role>();
+	//		[XmlArray("Roles")] // 包装元素 <Roles>
+	//		[XmlArrayItem("Role")] // 集合中的每个项是 <Role>
+	//		public List<Role> Roles { get; set; } = new List<Role>();
 
-			// 构造函数，方便测试
-			public User() { }
-		}
+	//		// 构造函数，方便测试
+	//		public User() { }
+	//	}
 
-		public class PersonalInfo
-		{
-			[XmlElement("FullName")]
-			public string FullName { get; set; }
+	//	public class PersonalInfo
+	//	{
+	//		[XmlElement("FullName")]
+	//		public string FullName { get; set; }
 
-			[XmlElement("EmailAddress")]
-			public string EmailAddress { get; set; }
+	//		[XmlElement("EmailAddress")]
+	//		public string EmailAddress { get; set; }
 
-			// 构造函数，方便测试
-			public PersonalInfo() { }
-		}
+	//		// 构造函数，方便测试
+	//		public PersonalInfo() { }
+	//	}
 
-		public class Role
-		{
-			[XmlAttribute("type")]
-			public string Type { get; set; }
+	//	public class Role
+	//	{
+	//		[XmlAttribute("type")]
+	//		public string Type { get; set; }
 
-			// 构造函数，方便测试
-			public Role() { }
-		}
-		#endregion
+	//		// 构造函数，方便测试
+	//		public Role() { }
+	//	}
+	//	#endregion
 
-		// XML 反序列化方法
-		public static T ParseExamXml<T>(string xmlContent)
-		{
-			string cleanedXml = xmlContent.Trim();
-			if (cleanedXml.StartsWith("'") && cleanedXml.EndsWith("'"))
-			{
-				cleanedXml = cleanedXml.Substring(1, cleanedXml.Length - 2);
-			}
-			if (cleanedXml.StartsWith("```xml") && cleanedXml.EndsWith("```"))
-			{
-				cleanedXml = cleanedXml.Substring("```xml".Length, cleanedXml.Length - "```xml".Length - "```".Length).Trim();
-			}
+	//	// XML 反序列化方法
+	//	public static T ParseExamXml<T>(string xmlContent)
+	//	{
+	//		string cleanedXml = xmlContent.Trim();
+	//		if (cleanedXml.StartsWith("'") && cleanedXml.EndsWith("'"))
+	//		{
+	//			cleanedXml = cleanedXml.Substring(1, cleanedXml.Length - 2);
+	//		}
+	//		if (cleanedXml.StartsWith("```xml") && cleanedXml.EndsWith("```"))
+	//		{
+	//			cleanedXml = cleanedXml.Substring("```xml".Length, cleanedXml.Length - "```xml".Length - "```".Length).Trim();
+	//		}
 
-			XmlSerializer serializer = new XmlSerializer(typeof(T));
+	//		XmlSerializer serializer = new XmlSerializer(typeof(T));
 
-			using (StringReader reader = new StringReader(cleanedXml))
-			{
-				try
-				{
-					T user = (T)serializer.Deserialize(reader);
-					return user;
-				}
-				catch (InvalidOperationException ex)
-				{
-					Console.WriteLine($"XML 反序列化操作错误: {ex.Message}");
-					Console.WriteLine($"内部异常: {ex.InnerException?.Message}");
-					return default(T);
-				}
-				catch (Exception ex)
-				{
-					Console.WriteLine($"处理错误: {ex.Message}");
-					return default(T);
-				}
-			}
-		}
+	//		using (StringReader reader = new StringReader(cleanedXml))
+	//		{
+	//			try
+	//			{
+	//				T user = (T)serializer.Deserialize(reader);
+	//				return user;
+	//			}
+	//			catch (InvalidOperationException ex)
+	//			{
+	//				Console.WriteLine($"XML 反序列化操作错误: {ex.Message}");
+	//				Console.WriteLine($"内部异常: {ex.InnerException?.Message}");
+	//				return default(T);
+	//			}
+	//			catch (Exception ex)
+	//			{
+	//				Console.WriteLine($"处理错误: {ex.Message}");
+	//				return default(T);
+	//			}
+	//		}
+	//	}
 
-		public static List<QuestionGroup> ParseExamXmlFormQG(string xmlContent)
-		{
-			// 移除可能存在的 Markdown 代码块标记
-			if (xmlContent.StartsWith("```xml") && xmlContent.EndsWith("```"))
-			{
-				xmlContent = xmlContent.Substring("```xml".Length, xmlContent.Length - "```xml".Length - "```".Length).Trim();
-			}
+	//	public static List<QuestionGroup> ParseExamXmlFormQG(string xmlContent)
+	//	{
+	//		// 移除可能存在的 Markdown 代码块标记
+	//		if (xmlContent.StartsWith("```xml") && xmlContent.EndsWith("```"))
+	//		{
+	//			xmlContent = xmlContent.Substring("```xml".Length, xmlContent.Length - "```xml".Length - "```".Length).Trim();
+	//		}
 
-			var serializer = new XmlSerializer(typeof(List<QuestionGroup>), new XmlRootAttribute("QGs"));
+	//		var serializer = new XmlSerializer(typeof(List<QuestionGroup>), new XmlRootAttribute("QGs"));
 
-			using (StringReader reader = new StringReader(xmlContent))
-			{
-				try
-				{
-					List<QuestionGroup> questionGroups = (List<QuestionGroup>)serializer.Deserialize(reader);
-					return questionGroups;
-				}
-				catch (InvalidOperationException ex)
-				{
-					Console.WriteLine($"XML 反序列化操作错误: {ex.Message}");
-					Console.WriteLine($"内部异常: {ex.InnerException?.Message}");
-					return null;
-				}
-				catch (Exception ex)
-				{
-					Console.WriteLine($"处理错误: {ex.Message}");
-					return null;
-				}
-			}
-		}
-	}
+	//		using (StringReader reader = new StringReader(xmlContent))
+	//		{
+	//			try
+	//			{
+	//				List<QuestionGroup> questionGroups = (List<QuestionGroup>)serializer.Deserialize(reader);
+	//				return questionGroups;
+	//			}
+	//			catch (InvalidOperationException ex)
+	//			{
+	//				Console.WriteLine($"XML 反序列化操作错误: {ex.Message}");
+	//				Console.WriteLine($"内部异常: {ex.InnerException?.Message}");
+	//				return null;
+	//			}
+	//			catch (Exception ex)
+	//			{
+	//				Console.WriteLine($"处理错误: {ex.Message}");
+	//				return null;
+	//			}
+	//		}
+	//	}
+	//}
 }
\ No newline at end of file
diff --git a/TechHelper.Client/Exam/Exam/ExamParse.cs b/TechHelper.Client/Exam/Exam/ExamParse.cs
deleted file mode 100644
index 1d4f155..0000000
--- a/TechHelper.Client/Exam/Exam/ExamParse.cs
+++ /dev/null
@@ -1,627 +0,0 @@
-using System.Text.RegularExpressions;
-
-namespace TechHelper.Client.Exam.Parse
-{
-	public class ExamPaper
-	{
-		public string Title { get; set; } = "未识别试卷标题";
-		public string Descript { get; set; } = "未识别试卷描述";
-		public string SubjectArea { get; set; } = "试卷类别";
-		public List<MajorQuestionGroup> MajorQuestionGroups { get; set; } = new List<MajorQuestionGroup>();
-		public List<Question> TopLevelQuestions { get; set; } = new List<Question>();
-	}
-
-	public class MajorQuestionGroup
-	{
-		public string Title { get; set; } = string.Empty;
-		public string Descript { get; set; } = string.Empty;
-		public float Score { get; set; }
-		public List<MajorQuestionGroup> SubMajorQuestionGroups { get; set; } = new List<MajorQuestionGroup>();
-		public List<Question> Questions { get; set; } = new List<Question>();
-		public int Priority { get; set; }
-	}
-
-	public class Question
-	{
-		public string Number { get; set; } = string.Empty;
-		public string Text { get; set; } = string.Empty;
-		public float Score { get; set; }
-		public List<Option> Options { get; set; } = new List<Option>();
-		public List<Question> SubQuestions { get; set; } = new List<Question>();
-		public int Priority { get; set; }
-	}
-
-	public class Option
-	{
-		public string Label { get; set; } = string.Empty;
-		public string Text { get; set; } = string.Empty;
-	}
-
-
-	/// <summary>
-	/// 表示一个带有优先级的正则表达式配置
-	/// </summary>
-	public class RegexPatternConfig
-	{
-		public string Pattern { get; set; } // 正则表达式字符串
-		public int Priority { get; set; }    // 优先级，数字越小优先级越高
-		public Regex Regex { get; private set; } // 编译后的Regex对象，用于性能优化
-
-		public RegexPatternConfig(string pattern, int priority)
-		{
-			Pattern = pattern;
-			Priority = priority;
-			Regex = new Regex(pattern, RegexOptions.Multiline | RegexOptions.Compiled); // 多行模式，编译以提高性能
-		}
-	}
-
-	/// <summary>
-	/// 试卷解析的配置类，包含所有正则表达式
-	/// </summary>
-	public class ExamParserConfig
-	{
-		public List<RegexPatternConfig> MajorQuestionGroupPatterns { get; set; } = new List<RegexPatternConfig>();
-		public List<RegexPatternConfig> QuestionPatterns { get; set; } = new List<RegexPatternConfig>();
-		public List<RegexPatternConfig> OptionPatterns { get; set; } = new List<RegexPatternConfig>();
-
-		public ExamParserConfig()
-		{
-			// --- 大题组模式 (MajorQuestionGroupPatterns) ---
-			// 匹配格式: "一、选择题 (20分)" 或 "二、阅读理解"
-			// Group 1: 大题组编号 (e.g., "一", "二")
-			// Group 2: 大题组标题 (e.g., "选择题", "阅读理解")
-			// Group 3: 整个分数部分 (e.g., "(20分)") - 可选
-			// Group 4: 纯数字分数 (e.g., "20") - 可选
-			MajorQuestionGroupPatterns.Add(new RegexPatternConfig(@"^([一二三四五六七八九十]+)[、\.]\s*(.+?)(?:\s*\(((\d+(?:\.\d+)?))\s*分\))?\s*$", 1));
-
-
-			// --- 题目模式 (QuestionPatterns) ---
-			// 针对不同格式的题目编号，捕获题号、题干和可选的分数
-			// Group 1: 题目编号 (e.g., "1", "(1)", "①")
-			// Group 2: 题干内容 (不含分数)
-			// Group 3: 整个分数部分 (e.g., "(5分)") - 可选
-			// Group 4: 纯数字分数 (e.g., "5") - 可选
-
-			// 模式 1: "1. 这是一个题目 (5分)" 或 "1. 这是一个题目"
-			QuestionPatterns.Add(new RegexPatternConfig(@"^(\d+)\.\s*(.+?)(?:\s*\(((\d+(?:\.\d+)?))\s*分\))?\s*$", 1));
-
-			// 模式 2: "(1) 这是一个子题目 (3分)" 或 "(1) 这是一个子题目"
-			QuestionPatterns.Add(new RegexPatternConfig(@"^\((\d+)\)\s*(.+?)(?:\s*\(((\d+(?:\.\d+)?))\s*分\))?\s*$", 2));
-
-			// 模式 3: "① 这是一个更深层次的子题目 (2分)" 或 "① 这是一个更深层次的子题目"
-			QuestionPatterns.Add(new RegexPatternConfig(@"^[①②③④⑤⑥⑦⑧⑨⑩]+\s*(.+?)(?:\s*\(((\d+(?:\.\d+)?))\s*分\))?\s*$", 3));
-
-
-			// --- 选项模式 (OptionPatterns) ---
-			// 匹配格式: "A. 选项内容"
-			// Group 1: 选项标签 (e.g., "A.")
-			// Group 2: 选项内容
-			OptionPatterns.Add(new RegexPatternConfig(@"^([A-Z]\.)\s*(.*)$", 1)); // 大写字母选项
-			OptionPatterns.Add(new RegexPatternConfig(@"^([a-z]\.)\s*(.*)$", 2)); // 小写字母选项
-
-
-			// --- 忽略模式 (IgnoredPatterns) ---
-			// 匹配空行或只包含空格的行，避免干扰解析流程
-			//IgnoredPatterns.Add(new RegexPatternConfig(@"^\s*$", 1));
-			//// 匹配试卷结尾的常见字符，防止被错误解析
-			//IgnoredPatterns.Add(new RegexPatternConfig(@"^\s*（试卷到此结束）\s*$", 1));
-			//IgnoredPatterns.Add(new RegexPatternConfig(@"^\s*（本卷共[0-9]+页）\s*$", 1));
-			// 标题和描述虽然你没要，但在实际解析中，这些模式有助于区分内容块，
-			// 否则它们可能会被其他模式（如题目模式）错误匹配。
-			// 建议你保留所有模式，但在本回复中，我只给出你要求的部分。
-		}
-	}
-
-
-
-
-	public class PotentialMatch
-	{
-		public int StartIndex { get; set; }
-		public int EndIndex { get; set; } // 匹配到的结构在原始文本中的结束位置
-		public string MatchedText { get; set; } // 匹配到的完整行或段落
-		public Match RegexMatch { get; set; } // 原始的Regex.Match对象，方便获取捕获组
-		public RegexPatternConfig PatternConfig { get; set; } // 匹配到的模式配置
-		public MatchType Type { get; set; } // 枚举：MajorQuestionGroup, Question, Option, etc.
-	}
-
-	public enum MatchType
-	{
-		MajorQuestionGroup,
-		Question,
-		Option,
-		Other // 如果有其他需要识别的类型
-	}
-
-
-	/// <summary>
-	/// 负责扫描原始文本，收集所有潜在的匹配项（题组、题目、选项）。
-	/// 它只进行匹配，不进行结构化归属。
-	/// </summary>
-	public class ExamDocumentScanner
-	{
-		private readonly ExamParserConfig _config;
-
-		public ExamDocumentScanner(ExamParserConfig config)
-		{
-			_config = config;
-		}
-
-		/// <summary>
-		/// 扫描给定的文本，返回所有潜在的匹配项，并按起始位置排序。
-		/// </summary>
-		/// <param name="text">要扫描的文本</param>
-		/// <returns>所有匹配到的 PotentialMatch 列表</returns>
-		public List<PotentialMatch> Scan(string text)
-		{
-			var allPotentialMatches = new List<PotentialMatch>();
-
-			// 扫描所有题组模式
-			foreach (var patternConfig in _config.MajorQuestionGroupPatterns)
-			{
-				foreach (Match match in patternConfig.Regex.Matches(text))
-				{
-					allPotentialMatches.Add(new PotentialMatch
-					{
-						StartIndex = match.Index,
-						EndIndex = match.Index + match.Length,
-						MatchedText = match.Value,
-						RegexMatch = match,
-						PatternConfig = patternConfig,
-						Type = MatchType.MajorQuestionGroup
-					});
-				}
-			}
-
-			// 扫描所有题目模式
-			foreach (var patternConfig in _config.QuestionPatterns)
-			{
-				foreach (Match match in patternConfig.Regex.Matches(text))
-				{
-					allPotentialMatches.Add(new PotentialMatch
-					{
-						StartIndex = match.Index,
-						EndIndex = match.Index + match.Length,
-						MatchedText = match.Value,
-						RegexMatch = match,
-						PatternConfig = patternConfig,
-						Type = MatchType.Question
-					});
-				}
-			}
-
-			// 扫描所有选项模式
-			foreach (var patternConfig in _config.OptionPatterns)
-			{
-				foreach (Match match in patternConfig.Regex.Matches(text))
-				{
-					allPotentialMatches.Add(new PotentialMatch
-					{
-						StartIndex = match.Index,
-						EndIndex = match.Index + match.Length,
-						MatchedText = match.Value,
-						RegexMatch = match,
-						PatternConfig = patternConfig,
-						Type = MatchType.Option
-					});
-				}
-			}
-
-			// 统一按起始位置排序
-			return allPotentialMatches.OrderBy(pm => pm.StartIndex).ToList();
-		}
-	}
-
-	public class ExamStructureBuilder
-	{
-		private readonly ExamParserConfig _config;
-
-		public ExamStructureBuilder(ExamParserConfig config)
-		{
-			_config = config ?? throw new ArgumentNullException(nameof(config), "ExamParserConfig cannot be null.");
-		}
-
-		public ExamPaper BuildExamPaper(string fullExamText, List<PotentialMatch> allPotentialMatches)
-		{
-			if (string.IsNullOrWhiteSpace(fullExamText))
-			{
-				throw new ArgumentException("Full exam text cannot be null or empty.", nameof(fullExamText));
-			}
-			if (allPotentialMatches == null)
-			{
-				throw new ArgumentNullException(nameof(allPotentialMatches), "Potential matches list cannot be null.");
-			}
-
-			var examPaper = new ExamPaper();
-			try
-			{
-				examPaper.Title = GetExamTitle(fullExamText);
-			}
-			catch (Exception ex)
-			{
-				throw new InvalidOperationException("Failed to extract exam title.", ex);
-			}
-
-			var majorQGStack = new Stack<MajorQuestionGroup>();
-			MajorQuestionGroup currentMajorQG = null;
-
-			var questionStack = new Stack<Question>();
-			Question currentQuestion = null;
-
-			int currentContentStart = 0;
-
-			if (allPotentialMatches.Any() && allPotentialMatches[0].StartIndex > 0)
-			{
-				string introText = fullExamText.Substring(0, allPotentialMatches[0].StartIndex).Trim();
-				if (!string.IsNullOrWhiteSpace(introText))
-				{
-					examPaper.Descript = introText; 
-				}
-			}
-
-			for (int i = 0; i < allPotentialMatches.Count; i++)
-			{
-				var pm = allPotentialMatches[i];
-
-				try
-				{
-					// Validate potential match data
-					if (pm.StartIndex < currentContentStart || pm.EndIndex > fullExamText.Length || pm.StartIndex > pm.EndIndex)
-					{
-						throw new ArgumentOutOfRangeException(
-							$"PotentialMatch at index {i} has invalid start/end indices. Start: {pm.StartIndex}, End: {pm.EndIndex}, CurrentContentStart: {currentContentStart}, FullTextLength: {fullExamText.Length}");
-					}
-					if (pm.RegexMatch == null || pm.PatternConfig == null)
-					{
-						throw new InvalidOperationException($"PotentialMatch at index {i} is missing RegexMatch or PatternConfig.");
-					}
-
-					string precedingText = fullExamText.Substring(currentContentStart, pm.StartIndex - currentContentStart).Trim();
-					if (!string.IsNullOrWhiteSpace(precedingText))
-					{
-						if (currentQuestion != null)
-						{
-							ProcessQuestionContent(currentQuestion, precedingText,
-								GetSubMatchesForRange(allPotentialMatches, currentContentStart, pm.StartIndex));
-						}
-						else if (currentMajorQG != null)
-						{
-							currentMajorQG.Descript += (string.IsNullOrWhiteSpace(currentMajorQG.Descript) ? "" : "\n") + precedingText;
-						}
-						else
-						{
-							// Append to ExamPaper.Description if it's top-level descriptive text
-							examPaper.Descript += (string.IsNullOrWhiteSpace(examPaper.Descript) ? "" : "\n") + precedingText;
-						}
-					}
-
-					if (pm.Type == MatchType.MajorQuestionGroup)
-					{
-						try
-						{
-							while (majorQGStack.Any() && pm.PatternConfig.Priority <= majorQGStack.Peek().Priority)
-							{
-								majorQGStack.Pop();
-							}
-
-							// Check if regex match groups exist before accessing
-							if (pm.RegexMatch.Groups.Count < 2)
-							{
-								throw new InvalidOperationException($"MajorQuestionGroup match at index {i} does not have enough regex groups for Title.");
-							}
-
-							float score = 0;
-							if (pm.RegexMatch.Groups.Count > 2 && pm.RegexMatch.Groups[2].Success)
-							{
-								if (!float.TryParse(pm.RegexMatch.Groups[2].Value, out score))
-								{
-									throw new FormatException($"Failed to parse score '{pm.RegexMatch.Groups[2].Value}' for MajorQuestionGroup at index {i}.");
-								}
-							}
-
-							MajorQuestionGroup newMajorQG = new MajorQuestionGroup
-							{
-								Title = pm.RegexMatch.Groups[1].Value.Trim(),
-								Score = score,
-								Priority = pm.PatternConfig.Priority
-							};
-
-							if (majorQGStack.Any())
-							{
-								majorQGStack.Peek().SubMajorQuestionGroups.Add(newMajorQG);
-							}
-							else
-							{
-								examPaper.MajorQuestionGroups.Add(newMajorQG);
-							}
-
-							majorQGStack.Push(newMajorQG);
-							currentMajorQG = newMajorQG;
-							questionStack.Clear();
-							currentQuestion = null;
-						}
-						catch (Exception ex)
-						{
-							throw new InvalidOperationException($"Error processing MajorQuestionGroup at index {i} (MatchedText: '{pm.MatchedText}').", ex);
-						}
-					}
-					else if (pm.Type == MatchType.Question)
-					{
-						try
-						{
-							while (questionStack.Any() && pm.PatternConfig.Priority <= questionStack.Peek().Priority)
-							{
-								questionStack.Pop();
-							}
-
-							if (pm.RegexMatch.Groups.Count < 3)
-							{
-								throw new InvalidOperationException($"Question match at index {i} does not have enough regex groups for Number and Text.");
-							}
-
-							Question newQuestion = new Question
-							{
-								Number = pm.RegexMatch.Groups[1].Value.Trim(),
-								Text = pm.RegexMatch.Groups[2].Value.Trim(),
-								Priority = pm.PatternConfig.Priority
-							};
-
-							if (pm.RegexMatch.Groups.Count > 3 && pm.RegexMatch.Groups[3].Success) // Assuming score is group 3 if available
-							{
-								float score = 0;
-								if (!float.TryParse(pm.RegexMatch.Groups[3].Value, out score))
-								{
-									throw new FormatException($"Failed to parse score '{pm.RegexMatch.Groups[3].Value}' for Question at index {i}.");
-								}
-								newQuestion.Score = score;
-							}
-
-							if (questionStack.Any())
-							{
-								questionStack.Peek().SubQuestions.Add(newQuestion);
-							}
-							else if (currentMajorQG != null)
-							{
-								currentMajorQG.Questions.Add(newQuestion);
-							}
-							else
-							{
-								examPaper.TopLevelQuestions.Add(newQuestion);
-							}
-
-							questionStack.Push(newQuestion);
-							currentQuestion = newQuestion;
-						}
-						catch (Exception ex)
-						{
-							throw new InvalidOperationException($"Error processing Question at index {i} (MatchedText: '{pm.MatchedText}').", ex);
-						}
-					}
-					else if (pm.Type == MatchType.Option)
-					{
-						try
-						{
-							if (currentQuestion != null)
-							{
-								if (pm.RegexMatch.Groups.Count < 3)
-								{
-									throw new InvalidOperationException($"Option match at index {i} does not have enough regex groups for Label and Text.");
-								}
-
-								Option newOption = new Option
-								{
-									Label = pm.RegexMatch.Groups[1].Value.Trim(),
-									Text = pm.RegexMatch.Groups[2].Value.Trim()
-								};
-								currentQuestion.Options.Add(newOption);
-							}
-							else
-							{
-								// This indicates a structural issue in the exam text
-								throw new InvalidOperationException($"Found isolated Option at index {i} (MatchedText: '{pm.MatchedText}'). Options must belong to a question.");
-							}
-						}
-						catch (Exception ex)
-						{
-							throw new InvalidOperationException($"Error processing Option at index {i} (MatchedText: '{pm.MatchedText}').", ex);
-						}
-					}
-
-					currentContentStart = pm.EndIndex;
-				}
-				catch (Exception ex)
-				{
-					// Catch any unexpected errors during the main loop iteration
-					throw new InvalidOperationException($"An unexpected error occurred during processing of PotentialMatch at index {i}.", ex);
-				}
-			}
-
-			// --- Step 4: Process remaining content after the last match ---
-			if (currentContentStart < fullExamText.Length)
-			{
-				try
-				{
-					string remainingText = fullExamText.Substring(currentContentStart).Trim();
-					if (!string.IsNullOrWhiteSpace(remainingText))
-					{
-						if (currentQuestion != null)
-						{
-							ProcessQuestionContent(currentQuestion, remainingText,
-								 GetSubMatchesForRange(allPotentialMatches, currentContentStart, fullExamText.Length));
-						}
-						else if (currentMajorQG != null)
-						{
-							currentMajorQG.Descript += (string.IsNullOrWhiteSpace(currentMajorQG.Descript) ? "" : "\n") + remainingText;
-						}
-						else
-						{
-							examPaper.Descript += (string.IsNullOrWhiteSpace(examPaper.Descript) ? "" : "\n") + remainingText;
-						}
-					}
-				}
-				catch (Exception ex)
-				{
-					throw new InvalidOperationException("Error processing remaining text after all potential matches.", ex);
-				}
-			}
-
-			return examPaper;
-		}
-
-		/// <summary>
-		/// Extracts the exam title (simple implementation)
-		/// </summary>
-		private string GetExamTitle(string examPaperText)
-		{
-			try
-			{
-				var firstLine = examPaperText.Split(new[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries)
-											.FirstOrDefault(line => !string.IsNullOrWhiteSpace(line));
-				return firstLine ?? "未识别试卷标题";
-			}
-			catch (Exception ex)
-			{
-				throw new InvalidOperationException("An error occurred while trying to extract the exam title from the text.", ex);
-			}
-		}
-
-		/// <summary>
-		/// Gets a subset of the given PotentialMatch list within a specified range.
-		/// This method helps ProcessQuestionContent by providing Options and SubQuestions within that range.
-		/// </summary>
-		private List<PotentialMatch> GetSubMatchesForRange(List<PotentialMatch> allMatches, int start, int end)
-		{
-			try
-			{
-				// Input validation for range
-				if (start < 0 || end < start)
-				{
-					throw new ArgumentOutOfRangeException($"Invalid range provided to GetSubMatchesForRange. Start: {start}, End: {end}");
-				}
-				// Ensure allMatches is not null before querying
-				if (allMatches == null)
-				{
-					return new List<PotentialMatch>();
-				}
-
-				return allMatches.Where(pm => pm.StartIndex >= start && pm.StartIndex < end).ToList();
-			}
-			catch (Exception ex)
-			{
-				throw new InvalidOperationException($"Error getting sub-matches for range [{start}, {end}).", ex);
-			}
-		}
-
-		/// <summary>
-		/// Processes the content of a Question, mainly for parsing Options and identifying unstructured text.
-		/// </summary>
-		private void ProcessQuestionContent(Question question, string contentText, List<PotentialMatch> potentialMatchesInScope)
-		{
-			if (question == null)
-			{
-				throw new ArgumentNullException(nameof(question), "Question cannot be null in ProcessQuestionContent.");
-			}
-			if (contentText == null) // contentText can be empty, but not null
-			{
-				throw new ArgumentNullException(nameof(contentText), "Content text cannot be null in ProcessQuestionContent.");
-			}
-			if (potentialMatchesInScope == null)
-			{
-				throw new ArgumentNullException(nameof(potentialMatchesInScope), "Potential matches in scope cannot be null.");
-			}
-
-			try
-			{
-				int lastOptionEndIndex = 0;
-
-				foreach (var pm in potentialMatchesInScope.OrderBy(p => p.StartIndex))
-				{
-					try
-					{
-						if (pm.Type == MatchType.Option)
-						{
-							// Check for valid indices
-							if (pm.StartIndex < lastOptionEndIndex || pm.StartIndex > contentText.Length || pm.EndIndex > contentText.Length)
-							{
-								throw new ArgumentOutOfRangeException(
-									$"Option match at index {pm.StartIndex} has invalid indices within content text. MatchedText: '{pm.MatchedText}'");
-							}
-
-							if (pm.StartIndex > lastOptionEndIndex)
-							{
-								string textBeforeOption = contentText.Substring(lastOptionEndIndex, pm.StartIndex - lastOptionEndIndex).Trim();
-								if (!string.IsNullOrWhiteSpace(textBeforeOption))
-								{
-									question.Text += (string.IsNullOrWhiteSpace(question.Text) ? "" : "\n") + textBeforeOption;
-								}
-							}
-
-							if (pm.RegexMatch.Groups.Count < 3)
-							{
-								throw new InvalidOperationException($"Option regex match '{pm.MatchedText}' does not have enough groups for label and text.");
-							}
-
-							var newOption = new Option
-							{
-								Label = pm.RegexMatch.Groups[1].Value.Trim(),
-								Text = pm.RegexMatch.Groups[2].Value.Trim()
-							};
-							question.Options.Add(newOption);
-							lastOptionEndIndex = pm.EndIndex;
-						}
-						// TODO: If there are SubQuestion types, they can be processed similarly here.
-					}
-					catch (Exception innerEx)
-					{
-						throw new InvalidOperationException($"Error processing a potential match ({pm.Type}) within question content (MatchedText: '{pm.MatchedText}').", innerEx);
-					}
-				}
-
-				// Process any remaining text after all options
-				if (lastOptionEndIndex < contentText.Length)
-				{
-					string remainingContent = contentText.Substring(lastOptionEndIndex).Trim();
-					if (!string.IsNullOrWhiteSpace(remainingContent))
-					{
-						question.Text += (string.IsNullOrWhiteSpace(question.Text) ? "" : "\n") + remainingContent;
-					}
-				}
-			}
-			catch (Exception ex)
-			{
-				throw new InvalidOperationException($"An error occurred while processing content for Question '{question.Number}'.", ex);
-			}
-		}
-	}
-
-	public class ExamParser
-	{
-		private readonly ExamParserConfig _config;
-		private readonly ExamDocumentScanner _scanner;
-		private readonly ExamStructureBuilder _builder;
-
-		public ExamParser(ExamParserConfig config)
-		{
-			_config = config;
-			_scanner = new ExamDocumentScanner(_config);
-			_builder = new ExamStructureBuilder(_config);
-		}
-
-		/// <summary>
-		/// 解析给定的试卷文本，返回结构化的 ExamPaper 对象。
-		/// </summary>
-		/// <param name="examPaperText">完整的试卷文本</param>
-		/// <returns>解析后的 ExamPaper 对象</returns>
-		public ExamPaper ParseExamPaper(string examPaperText)
-		{
-			// 1. 扫描：一次性扫描整个文本，收集所有潜在的匹配项
-			List<PotentialMatch> allPotentialMatches = _scanner.Scan(examPaperText);
-
-			// 2. 构建：根据扫描结果和原始文本，线性遍历并构建层级结构
-			ExamPaper parsedExam = _builder.BuildExamPaper(examPaperText, allPotentialMatches);
-
-			return parsedExam;
-		}
-	}
-
-}
\ No newline at end of file
diff --git a/TechHelper.Client/Exam/Exam/QuestionCard.razor b/TechHelper.Client/Exam/Exam/QuestionCard.razor
deleted file mode 100644
index be78898..0000000
--- a/TechHelper.Client/Exam/Exam/QuestionCard.razor
+++ /dev/null
@@ -1,43 +0,0 @@
-@using TechHelper.Client.Exam.Parse
-
-<MudCard Class="my-2 pa-2" Outlined="true" Elevation="1">
-    <MudCardContent>
-        <MudText Typo="Typo.subtitle1">
-            <b>@Question.Number</b> @((MarkupString)Question.Text)
-            @if (Question.Score > 0)
-            {
-                <MudText Typo="Typo.body2" Class="d-inline ml-2">(@Question.Score 分)</MudText>
-            }
-        </MudText>
-
-        @* 显示选项 - 不使用 MudList *@
-        @if (Question.Options.Any())
-        {
-            <div class="mt-2">
-                @* 使用普通的 div 容器，你可以添加自定义 CSS 类进行样式控制 *@
-                @foreach (var option in Question.Options)
-                {
-                    <MudText Typo="Typo.body2" Class="my-1">
-                        @* 为每个选项文本添加一些边距 *@
-                        <b>@option.Label</b> @((MarkupString)option.Text)
-                    </MudText>
-                }
-            </div>
-        }
-
-        @* 递归显示子题目 *@
-        @if (Question.SubQuestions.Any())
-        {
-            <MudText Typo="Typo.subtitle2" Class="my-2">子题目:</MudText>
-            @foreach (var subQuestion in Question.SubQuestions)
-            {
-                <QuestionCard Question="subQuestion" />
-            }
-        }
-    </MudCardContent>
-</MudCard>
-
-@code {
-    [Parameter]
-    public Question Question { get; set; }
-}
\ No newline at end of file
diff --git a/TechHelper.Client/Exam/Exam/SubMajorQuestionGroupDisplay.razor b/TechHelper.Client/Exam/Exam/SubMajorQuestionGroupDisplay.razor
deleted file mode 100644
index bf3f24e..0000000
--- a/TechHelper.Client/Exam/Exam/SubMajorQuestionGroupDisplay.razor
+++ /dev/null
@@ -1,43 +0,0 @@
-@using TechHelper.Client.Exam.Parse
-@* SubMajorQuestionGroupDisplay.razor *@
-<MudExpansionPanels>
-    @foreach (var majorQG in MajorQGList)
-    {
-        <MudExpansionPanel Text="@majorQG.Title" DisableRipple="true">
-            <MudCard Class="mt-2" Outlined="true">
-                <MudCardContent>
-                    @if (!string.IsNullOrWhiteSpace(majorQG.Descript))
-                    {
-                        <MudText Typo="Typo.body2"><b>描述:</b> @((MarkupString)majorQG.Descript)</MudText>
-                    }
-                    @if (majorQG.Score > 0)
-                    {
-                        <MudText Typo="Typo.body2"><b>总分:</b> @majorQG.Score 分</MudText>
-                    }
-
-                    @* 显示当前子题组下的题目 *@
-                    @if (majorQG.Questions.Any())
-                    {
-                        <MudText Typo="Typo.subtitle1" Class="my-2">题目:</MudText>
-                        @foreach (var question in majorQG.Questions)
-                        {
-                            <QuestionCard Question="question" />
-                        }
-                    }
-
-                    @* 递归显示更深层次的子题组 *@
-                    @if (majorQG.SubMajorQuestionGroups.Any())
-                    {
-                        <MudText Typo="Typo.subtitle1" Class="my-2">子题组:</MudText>
-                        <SubMajorQuestionGroupDisplay MajorQGList="majorQG.SubMajorQuestionGroups" /> 
-                    }
-                </MudCardContent>
-            </MudCard>
-        </MudExpansionPanel>
-    }
-</MudExpansionPanels>
-
-@code {
-    [Parameter]
-    public List<MajorQuestionGroup> MajorQGList { get; set; }
-}
\ No newline at end of file
diff --git a/TechHelper.Client/Exam/ExamPaperExtensions .cs b/TechHelper.Client/Exam/ExamPaperExtensions .cs
new file mode 100644
index 0000000..cad9978
--- /dev/null
+++ b/TechHelper.Client/Exam/ExamPaperExtensions .cs	
@@ -0,0 +1,220 @@
+using Entities.DTO;
+using System.Text.Json.Serialization;
+using System.Text.Json;
+
+namespace TechHelper.Client.Exam
+{
+	public static class ExamPaperExtensions
+	{
+		public static ExamDto ConvertToExamDTO(this ExamPaper examPaper)
+		{
+			ExamDto dto = new ExamDto();
+
+			dto.AssignmentTitle = examPaper.AssignmentTitle;
+			dto.Description = examPaper.Description;
+			dto.SubjectArea = examPaper.SubjectArea;
+			dto.QuestionGroups.Title = examPaper.AssignmentTitle;
+			dto.QuestionGroups.Descript = examPaper.Description;
+			// 处理顶级 QuestionGroups
+			foreach (var qg in examPaper.QuestionGroups)
+			{
+				var qgd = new QuestionGroupDto();
+				// 顶级 QuestionGroup，其父组当然无效 (false)，所以 isParentGroupValidChain 为 false
+				ParseMajorQuestionGroup(qg, qgd, false);
+				dto.QuestionGroups.SubQuestionGroups.Add(qgd);
+			}
+
+			// 处理 TopLevelQuestions
+			foreach (var question in examPaper.TopLevelQuestions)
+			{
+				// 对于 TopLevelQuestions，它们没有父组，所以 isParentGroupValidChain 初始为 false
+				// 如果顶级 Question 包含子问题，则将其视为一个 QuestionGroupDto
+				if (question.SubQuestions != null && question.SubQuestions.Any())
+				{
+					var qgDto = new QuestionGroupDto
+					{
+						Title = question.Stem,
+						Score = (int)question.Score,
+						Descript = "", // 顶级 Question 默认无描述
+					};
+					// 判断当前组是否有效：如果有描述，则为有效组
+					qgDto.ValidQuestionGroup = !string.IsNullOrEmpty(qgDto.Descript);
+
+					// 传递给子项的 isParentGroupValidChain 状态：如果当前组有效，则传递 true；否则继承父级状态 (此处为 false)
+					ParseQuestionWithSubQuestions(question, qgDto, qgDto.ValidQuestionGroup);
+					dto.QuestionGroups.SubQuestionGroups.Add(qgDto);
+				}
+				else // 如果顶级 Question 没有子问题，则它本身就是一个独立的 SubQuestionDto，放在一个容器 QuestionGroupDto 中
+				{
+					var qgDto = new QuestionGroupDto
+					{
+						Title = question.Stem,
+						Score = (int)question.Score,
+						Descript = "", // 独立题目的容器组通常无描述
+					};
+					// 独立题目的容器组，如果没有描述，则不是“有效组”
+					qgDto.ValidQuestionGroup = !string.IsNullOrEmpty(qgDto.Descript);
+
+					var subQuestionDto = new SubQuestionDto();
+					// 此时，qgDto.ValidQuestionGroup 为 false，所以传入 true，表示题目是有效的
+					// 因为其父组链 (此处为自身) 不是有效组
+					ParseSingleQuestion(question, subQuestionDto, !qgDto.ValidQuestionGroup);
+					qgDto.SubQuestions.Add(subQuestionDto);
+					dto.QuestionGroups.SubQuestionGroups.Add(qgDto);
+				}
+			}
+
+			return dto;
+		}
+
+		// 解析 MajorQuestionGroup 及其子项
+		// isParentGroupValidChain 参数表示从顶层到当前组的任一父组是否已经是“有效组”
+		private static void ParseMajorQuestionGroup(MajorQuestionGroup qg, QuestionGroupDto qgd, bool isParentGroupValidChain)
+		{
+			qgd.Title = qg.Title;
+			qgd.Score = (int)qg.Score;
+			qgd.Descript = qg.Descript;
+
+			// 判断当前组是否有效：如果有描述，并且其父级链中没有任何一个组是有效组，则当前组有效
+			qgd.ValidQuestionGroup = !string.IsNullOrEmpty(qg.Descript) && !isParentGroupValidChain;
+
+			// 更新传递给子项的 isParentGroupValidChain 状态：
+			// 如果当前组是有效组 (即 qgd.ValidQuestionGroup 为 true)，那么子项的父级链就包含了有效组
+			// 否则，子项的父级链有效性继承自其父级 (isParentGroupValidChain)
+			bool nextIsParentGroupValidChain = qgd.ValidQuestionGroup || isParentGroupValidChain;
+
+			// 处理子 QuestionGroup
+			if (qg.SubQuestionGroups != null)
+			{
+				qg.SubQuestionGroups.ForEach(sqg =>
+				{
+					var sqgd = new QuestionGroupDto();
+					ParseMajorQuestionGroup(sqg, sqgd, nextIsParentGroupValidChain);
+					qgd.SubQuestionGroups.Add(sqgd);
+				});
+			}
+
+			// 处理 MajorQuestionGroup 下的 SubQuestions
+			if (qg.SubQuestions != null)
+			{
+				qg.SubQuestions.ForEach(sq =>
+				{
+					// 如果 MajorQuestionGroup 下的 Question 包含子问题，则转为 QuestionGroupDto
+					if (sq.SubQuestions != null && sq.SubQuestions.Any())
+					{
+						var subQgd = new QuestionGroupDto
+						{
+							Title = sq.Stem,
+							Score = (int)sq.Score,
+							Descript = "" // 默认为空
+						};
+						// 判断当前组是否有效：如果有描述，并且其父级链中没有任何一个组是有效组，则当前组有效
+						subQgd.ValidQuestionGroup = !string.IsNullOrEmpty(subQgd.Descript) && !nextIsParentGroupValidChain;
+
+						ParseQuestionWithSubQuestions(sq, subQgd, subQgd.ValidQuestionGroup || nextIsParentGroupValidChain);
+						qgd.SubQuestionGroups.Add(subQgd);
+					}
+					else // 如果 MajorQuestionGroup 下的 Question 没有子问题，则转为 SubQuestionDto
+					{
+						var subQd = new SubQuestionDto();
+						// 只有当所有父组（包括当前组）都不是有效组时，这个题目才有效
+						ParseSingleQuestion(sq, subQd, !nextIsParentGroupValidChain);
+						qgd.SubQuestions.Add(subQd);
+					}
+				});
+			}
+		}
+
+		// 解析包含子问题的 Question，将其转换为 QuestionGroupDto
+		// isParentGroupValidChain 参数表示从顶层到当前组的任一父组是否已经是“有效组”
+		private static void ParseQuestionWithSubQuestions(Question question, QuestionGroupDto qgd, bool isParentGroupValidChain)
+		{
+			qgd.Title = question.Stem;
+			qgd.Score = (int)question.Score;
+			qgd.Descript = ""; // 默认为空
+
+			// 判断当前组是否有效：如果有描述，并且其父级链中没有任何一个组是有效组，则当前组有效
+			qgd.ValidQuestionGroup = !string.IsNullOrEmpty(qgd.Descript) && !isParentGroupValidChain;
+
+			// 更新传递给子项的 isParentGroupValidChain 状态
+			bool nextIsParentGroupValidChain = qgd.ValidQuestionGroup || isParentGroupValidChain;
+
+
+			if (question.SubQuestions != null)
+			{
+				question.SubQuestions.ForEach(subQ =>
+				{
+					// 如果子问题本身还有子问题（多层嵌套），则继续创建 QuestionGroupDto
+					if (subQ.SubQuestions != null && subQ.SubQuestions.Any())
+					{
+						var nestedQgd = new QuestionGroupDto
+						{
+							Title = subQ.Stem,
+							Score = (int)subQ.Score,
+							Descript = "" // 默认为空
+						};
+						// 判断当前组是否有效：如果有描述，并且其父级链中没有任何一个组是有效组，则当前组有效
+						nestedQgd.ValidQuestionGroup = !string.IsNullOrEmpty(nestedQgd.Descript) && !nextIsParentGroupValidChain;
+
+						ParseQuestionWithSubQuestions(subQ, nestedQgd, nestedQgd.ValidQuestionGroup || nextIsParentGroupValidChain);
+						qgd.SubQuestionGroups.Add(nestedQgd);
+					}
+					else // 如果子问题没有子问题，则直接创建 SubQuestionDto
+					{
+						var subQd = new SubQuestionDto();
+						// 只有当所有父组（包括当前组）都不是有效组时，这个题目才有效
+						ParseSingleQuestion(subQ, subQd, !nextIsParentGroupValidChain);
+						qgd.SubQuestions.Add(subQd);
+					}
+				});
+			}
+		}
+
+		// 解析单个 Question (没有子问题) 为 SubQuestionDto
+		private static void ParseSingleQuestion(Question question, SubQuestionDto subQd, bool validQ)
+		{
+			subQd.Stem = question.Stem;
+			subQd.Score = (int)question.Score;
+			subQd.ValidQuestion = validQ; // 根据传入的 validQ 确定是否是“有效题目”
+			subQd.SampleAnswer = question.SampleAnswer;
+			subQd.QuestionType = question.QuestionType;
+			// 注意：DifficultyLevel 在本地 Question 中没有，如果服务器需要，可能需要补充默认值或从其他地方获取
+			// subQd.DifficultyLevel = ...;
+
+			if (question.Options != null)
+			{
+				question.Options.ForEach(o =>
+				{
+					subQd.Options.Add(new OptionDto { Value = o.Label + o.Text });
+				});
+			}
+		}
+
+
+
+		public static string SerializeExamDto(this ExamDto dto)
+		{
+			// 配置序列化选项（可选）
+			var options = new JsonSerializerOptions
+			{
+				WriteIndented = true, 
+				PropertyNamingPolicy = JsonNamingPolicy.CamelCase, 
+				DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull 
+			};
+
+			return JsonSerializer.Serialize(dto, options);
+		}
+
+		public static ExamDto DeserializeExamDto(string jsonString)
+		{
+			
+			var options = new JsonSerializerOptions
+			{
+				PropertyNamingPolicy = JsonNamingPolicy.CamelCase 
+			};
+
+			return JsonSerializer.Deserialize<ExamDto>(jsonString, options);
+		}
+
+	}
+}
diff --git a/TechHelper.Client/Exam/ExamParse.cs b/TechHelper.Client/Exam/ExamParse.cs
new file mode 100644
index 0000000..a69c391
--- /dev/null
+++ b/TechHelper.Client/Exam/ExamParse.cs
@@ -0,0 +1,740 @@
+using Entities.DTO;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text.RegularExpressions;
+
+namespace TechHelper.Client.Exam
+{
+	// --- 新增错误处理相关类 ---
+	public class ParseError
+	{
+		public ParseErrorType Type { get; }
+		public string Message { get; }
+		public int? Index { get; } // 错误发生的文本索引或匹配项索引
+		public string MatchedText { get; } // 如果与某个匹配项相关，记录其文本
+		public Exception InnerException { get; } // 捕获到的原始异常
+
+		public ParseError(ParseErrorType type, string message, int? index = null, string matchedText = null, Exception innerException = null)
+		{
+			Type = type;
+			Message = message;
+			Index = index;
+			MatchedText = matchedText;
+			InnerException = innerException;
+		}
+
+		public override string ToString()
+		{
+			var sb = new System.Text.StringBuilder();
+			sb.Append($"[{Type}] {Message}");
+			if (Index.HasValue) sb.Append($" (Index: {Index.Value})");
+			if (!string.IsNullOrEmpty(MatchedText)) sb.Append($" (MatchedText: '{MatchedText}')");
+			if (InnerException != null) sb.Append($" InnerException: {InnerException.Message}");
+			return sb.ToString();
+		}
+	}
+
+	public enum ParseErrorType
+	{
+		Validation = 1,          // 输入验证失败
+		DataParsing = 2,         // 数据解析失败（如数字转换）
+		Structural = 3,          // 结构性问题（如选项没有对应的问题）
+		RegexMatchIssue = 4,     // 正则表达式匹配结果不符合预期
+		UnexpectedError = 5      // 未预料到的通用错误
+	}
+
+
+	public class ExamPaper
+	{
+		public string AssignmentTitle { get; set; } = "未识别试卷标题";
+		public string Description { get; set; } = "未识别试卷描述";
+		public string SubjectArea { get; set; } = "试卷类别";
+		public List<MajorQuestionGroup> QuestionGroups { get; set; } = new List<MajorQuestionGroup>();
+		public List<Question> TopLevelQuestions { get; set; } = new List<Question>();
+		public List<ParseError> Errors { get; set; } = new List<ParseError>();
+	}
+
+	public class MajorQuestionGroup
+	{
+		public string Title { get; set; } = string.Empty;
+		public string Descript { get; set; } = string.Empty;
+		public float Score { get; set; }
+		public List<MajorQuestionGroup> SubQuestionGroups { get; set; } = new List<MajorQuestionGroup>();
+		public List<Question> SubQuestions { get; set; } = new List<Question>();
+		public int Priority { get; set; }
+	}
+
+	public class Question
+	{
+		public string Number { get; set; } = string.Empty;
+		public string Stem { get; set; } = string.Empty;
+		public float Score { get; set; }
+		public List<Option> Options { get; set; } = new List<Option>();
+		public List<Question> SubQuestions { get; set; } = new List<Question>();
+		public string SampleAnswer { get; set; } = string.Empty;
+		public string QuestionType { get; set; } = string.Empty;
+		public int Priority { get; set; }
+	}
+
+	public class Option
+	{
+		public string Label { get; set; } = string.Empty;
+		public string Text { get; set; } = string.Empty;
+	}
+
+
+	/// <summary>
+	/// 表示一个带有优先级的正则表达式配置
+	/// </summary>
+	public class RegexPatternConfig
+	{
+		public string Pattern { get; set; } // 正则表达式字符串
+		public int Priority { get; set; }    // 优先级，数字越小优先级越高
+		public Regex Regex { get; private set; } // 编译后的Regex对象，用于性能优化
+
+		public RegexPatternConfig(string pattern, int priority)
+		{
+			Pattern = pattern;
+			Priority = priority;
+			Regex = new Regex(pattern, RegexOptions.Multiline | RegexOptions.Compiled); // 多行模式，编译以提高性能
+		}
+	}
+
+	public enum ExamParserEnum
+	{
+		MajorQuestionGroupPatterns = 0,
+		QuestionPatterns,
+		OptionPatterns
+	}
+
+	/// <summary>
+	/// 试卷解析的配置类，包含所有正则表达式
+	/// </summary>
+	public class ExamParserConfig
+	{
+		public List<RegexPatternConfig> MajorQuestionGroupPatterns { get; set; } = new List<RegexPatternConfig>();
+		public List<RegexPatternConfig> QuestionPatterns { get; set; } = new List<RegexPatternConfig>();
+		public List<RegexPatternConfig> OptionPatterns { get; set; } = new List<RegexPatternConfig>();
+
+		public ExamParserConfig()
+		{
+			MajorQuestionGroupPatterns.Add(new RegexPatternConfig(@"^([一二三四五六七八九十]+)[、\.]\s*(.+?)(?:\s*\(((\d+(?:\.\d+)?))\s*分\))?\s*$", 1));
+			MajorQuestionGroupPatterns.Add(new RegexPatternConfig(@"^\(([一二三四五六七八九十]{1,2}|十[一二三四五六七八九])\)\s*(.+?)(?:\s*\(((\d+(?:\.\d+)?))\s*分\))?\s*$", 2));
+
+
+			// 模式 1: "1. 这是一个题目 (5分)" 或 "1. 这是一个题目"
+			QuestionPatterns.Add(new RegexPatternConfig(@"^(\d+)\.\s*(.+?)(?:\s*\(((\d+(?:\.\d+)?))\s*分\))?\s*$", 1));
+
+			// 模式 2: "(1) 这是一个子题目 (3分)" 或 "(1) 这是一个子题目"
+			QuestionPatterns.Add(new RegexPatternConfig(@"^\((\d+)\)\s*(.+?)(?:\s*\(((\d+(?:\.\d+)?))\s*分\))?\s*$", 2));
+
+			// 模式 3: "① 这是一个更深层次的子题目 (2分)" 或 "① 这是一个更深层次的子题目"
+			QuestionPatterns.Add(new RegexPatternConfig(@"^[①②③④⑤⑥⑦⑧⑨⑩]+\s*(.+?)(?:\s*\(((\d+(?:\.\d+)?))\s*分\))?\s*$", 3));
+
+
+			OptionPatterns.Add(new RegexPatternConfig(@"([A-Z]\.)\s*(.*?)(?=[A-Z]\.|$)", 1)); // 大写字母选项
+			OptionPatterns.Add(new RegexPatternConfig(@"([a-z]\.)\s*(.*?)(?=[a-z]\.|$)", 1)); // 小写字母选项
+
+		}
+	}
+
+
+	public class PotentialMatch
+	{
+		public int StartIndex { get; set; }
+		public int EndIndex { get; set; } // 匹配到的结构在原始文本中的结束位置
+		public string MatchedText { get; set; } // 匹配到的完整行或段落
+		public Match RegexMatch { get; set; } // 原始的Regex.Match对象，方便获取捕获组
+		public RegexPatternConfig PatternConfig { get; set; } // 匹配到的模式配置
+		public MatchType Type { get; set; } // 枚举：MajorQuestionGroup, Question, Option, etc.
+	}
+
+	public enum MatchType
+	{
+		MajorQuestionGroup,
+		Question,
+		Option,
+		Other // 如果有其他需要识别的类型
+	}
+
+
+	/// <summary>
+	/// 负责扫描原始文本，收集所有潜在的匹配项（题组、题目、选项）。
+	/// 它只进行匹配，不进行结构化归属。
+	/// </summary>
+	public class ExamDocumentScanner
+	{
+		private readonly ExamParserConfig _config;
+
+		public ExamDocumentScanner(ExamParserConfig config)
+		{
+			_config = config ?? throw new ArgumentNullException(nameof(config)); // 确保配置不为空
+		}
+
+		/// <summary>
+		/// 扫描给定的文本，返回所有潜在的匹配项，并按起始位置排序。
+		/// </summary>
+		/// <param name="text">要扫描的文本</param>
+		/// <returns>所有匹配到的 PotentialMatch 列表</returns>
+		public List<PotentialMatch> Scan(string text)
+		{
+			if (string.IsNullOrEmpty(text))
+			{
+				return new List<PotentialMatch>(); // 对于空文本，直接返回空列表
+			}
+
+			var allPotentialMatches = new List<PotentialMatch>();
+
+			// 扫描所有题组模式
+			foreach (var patternConfig in _config.MajorQuestionGroupPatterns)
+			{
+				foreach (Match match in patternConfig.Regex.Matches(text))
+				{
+					allPotentialMatches.Add(new PotentialMatch
+					{
+						StartIndex = match.Index,
+						EndIndex = match.Index + match.Length,
+						MatchedText = match.Value,
+						RegexMatch = match,
+						PatternConfig = patternConfig,
+						Type = MatchType.MajorQuestionGroup
+					});
+				}
+			}
+
+			// 扫描所有题目模式
+			foreach (var patternConfig in _config.QuestionPatterns)
+			{
+				foreach (Match match in patternConfig.Regex.Matches(text))
+				{
+					allPotentialMatches.Add(new PotentialMatch
+					{
+						StartIndex = match.Index,
+						EndIndex = match.Index + match.Length,
+						MatchedText = match.Value,
+						RegexMatch = match,
+						PatternConfig = patternConfig,
+						Type = MatchType.Question
+					});
+				}
+			}
+
+			// 扫描所有选项模式
+			foreach (var patternConfig in _config.OptionPatterns)
+			{
+				foreach (Match match in patternConfig.Regex.Matches(text))
+				{
+					allPotentialMatches.Add(new PotentialMatch
+					{
+						StartIndex = match.Index,
+						EndIndex = match.Index + match.Length,
+						MatchedText = match.Value,
+						RegexMatch = match,
+						PatternConfig = patternConfig,
+						Type = MatchType.Option
+					});
+				}
+			}
+
+			// 统一按起始位置排序
+			return allPotentialMatches.OrderBy(pm => pm.StartIndex).ToList();
+		}
+	}
+
+	public class ExamStructureBuilder
+	{
+		private readonly ExamParserConfig _config;
+
+		public ExamStructureBuilder(ExamParserConfig config)
+		{
+			_config = config ?? throw new ArgumentNullException(nameof(config), "ExamParserConfig cannot be null.");
+		}
+
+		/// <summary>
+		/// Builds the ExamPaper structure from raw text and potential matches.
+		/// Collects and returns parsing errors encountered during the process.
+		/// </summary>
+		/// <param name="fullExamText">The complete text of the exam paper.</param>
+		/// <param name="allPotentialMatches">A list of all identified potential matches.</param>
+		/// <returns>An ExamPaper object containing the parsed structure and a list of errors.</returns>
+		/// <exception cref="ArgumentException">Thrown if fullExamText is null or empty.</exception>
+		/// <exception cref="ArgumentNullException">Thrown if allPotentialMatches is null.</exception>
+		public ExamPaper BuildExamPaper(string fullExamText, List<PotentialMatch> allPotentialMatches)
+		{
+			// 核心输入验证仍然是必要的，因为这些错误是无法恢复的
+			if (string.IsNullOrWhiteSpace(fullExamText))
+			{
+				throw new ArgumentException("Full exam text cannot be null or empty.", nameof(fullExamText));
+			}
+			if (allPotentialMatches == null)
+			{
+				throw new ArgumentNullException(nameof(allPotentialMatches), "Potential matches list cannot be null.");
+			}
+
+			var examPaper = new ExamPaper(); // ExamPaper 现在包含一个 Errors 列表
+
+			// 尝试获取试卷标题
+			try
+			{
+				examPaper.AssignmentTitle = GetExamTitle(fullExamText);
+			}
+			catch (Exception ex)
+			{
+				// 如果获取标题失败，记录错误而不是抛出致命异常
+				examPaper.Errors.Add(new ParseError(ParseErrorType.UnexpectedError, "Failed to extract exam title.", innerException: ex));
+				examPaper.AssignmentTitle = "未识别试卷标题"; // 提供默认值
+			}
+
+			var majorQGStack = new Stack<MajorQuestionGroup>();
+			MajorQuestionGroup currentMajorQG = null;
+
+			var questionStack = new Stack<Question>();
+			Question currentQuestion = null;
+
+			int currentContentStart = 0;
+
+			// 处理试卷开头的描述性文本
+			if (allPotentialMatches.Any() && allPotentialMatches[0].StartIndex > 0)
+			{
+				string introText = fullExamText.Substring(0, allPotentialMatches[0].StartIndex).Trim();
+				if (!string.IsNullOrWhiteSpace(introText))
+				{
+					examPaper.Description += (string.IsNullOrWhiteSpace(examPaper.Description) ? "" : "\n") + introText;
+				}
+			}
+
+			currentContentStart = allPotentialMatches[0].StartIndex;
+
+			for (int i = 0; i < allPotentialMatches.Count; i++)
+			{
+				var pm = allPotentialMatches[i];
+
+
+				try
+				{
+					// **数据验证：不再抛出，而是记录错误**
+					if (pm.StartIndex < currentContentStart || pm.EndIndex > fullExamText.Length || pm.StartIndex > pm.EndIndex)
+					{
+						examPaper.Errors.Add(new ParseError(ParseErrorType.Validation,
+							$"PotentialMatch at index {i} has invalid start/end indices. Start: {pm.StartIndex}, End: {pm.EndIndex}, CurrentContentStart: {currentContentStart}, FullTextLength: {fullExamText.Length}",
+							index: i, matchedText: pm.MatchedText));
+						currentContentStart = Math.Max(currentContentStart, pm.EndIndex); // 尝试跳过这个损坏的匹配项
+						continue; // 跳过当前循环迭代，处理下一个匹配项
+					}
+					if (pm.RegexMatch == null || pm.PatternConfig == null)
+					{
+						examPaper.Errors.Add(new ParseError(ParseErrorType.Validation,
+							$"PotentialMatch at index {i} is missing RegexMatch or PatternConfig.",
+							index: i, matchedText: pm.MatchedText));
+						currentContentStart = Math.Max(currentContentStart, pm.EndIndex); // 尝试跳过这个损坏的匹配项
+						continue; // 跳过当前循环迭代，处理下一个匹配项
+					}
+
+					string precedingText = fullExamText.Substring(currentContentStart, pm.StartIndex - currentContentStart).Trim();
+					if (!string.IsNullOrWhiteSpace(precedingText))
+					{
+						if (currentQuestion != null)
+						{
+							// 将 examPaper.Errors 传递给 ProcessQuestionContent 收集错误
+							ProcessQuestionContent(currentQuestion, precedingText,
+								GetSubMatchesForRange(allPotentialMatches, currentContentStart, pm.StartIndex, examPaper.Errors),
+								examPaper.Errors);
+						}
+						else if (currentMajorQG != null)
+						{
+							currentMajorQG.Descript += (string.IsNullOrWhiteSpace(currentMajorQG.Descript) ? "" : "\n") + precedingText;
+						}
+						else
+						{
+							examPaper.Description += (string.IsNullOrWhiteSpace(examPaper.Description) ? "" : "\n") + precedingText;
+						}
+					}
+
+					if (pm.Type == MatchType.MajorQuestionGroup)
+					{
+						// 对 MajorQuestionGroup 的处理
+						try
+						{
+							while (majorQGStack.Any() && pm.PatternConfig.Priority <= majorQGStack.Peek().Priority)
+							{
+								majorQGStack.Pop();
+							}
+
+							// RegexMatch Groups 验证：不再抛出，记录错误
+							if (pm.RegexMatch.Groups.Count < 2 || string.IsNullOrWhiteSpace(pm.RegexMatch.Groups[1].Value))
+							{
+								examPaper.Errors.Add(new ParseError(ParseErrorType.RegexMatchIssue,
+									$"MajorQuestionGroup match at index {i} does not have enough regex groups or a valid title group (Group 1). Skipping this group.",
+									index: i, matchedText: pm.MatchedText));
+								currentContentStart = pm.EndIndex; // 继续，尝试跳过此项
+								continue;
+							}
+
+							float score = 0;
+							// 使用 float.TryParse 避免异常
+							if (pm.RegexMatch.Groups.Count > 3 && pm.RegexMatch.Groups[4].Success) // 假设纯数字分数是 Group 4
+							{
+								if (!float.TryParse(pm.RegexMatch.Groups[4].Value, out score))
+								{
+									examPaper.Errors.Add(new ParseError(ParseErrorType.DataParsing,
+										$"Failed to parse score '{pm.RegexMatch.Groups[4].Value}' for MajorQuestionGroup at index {i}. Defaulting to 0.",
+										index: i, matchedText: pm.MatchedText));
+								}
+							}
+
+							MajorQuestionGroup newMajorQG = new MajorQuestionGroup
+							{
+								Title = pm.RegexMatch.Groups[2].Value.Trim(), // 标题是 Group 2
+								Score = score,
+								Priority = pm.PatternConfig.Priority,
+							};
+
+							if (majorQGStack.Any())
+							{
+								majorQGStack.Peek().SubQuestionGroups.Add(newMajorQG);
+							}
+							else
+							{
+								examPaper.QuestionGroups.Add(newMajorQG);
+							}
+
+							currentContentStart = pm.EndIndex;
+							majorQGStack.Push(newMajorQG);
+							currentMajorQG = newMajorQG;
+							questionStack.Clear();
+							currentQuestion = null;
+						}
+						catch (Exception ex)
+						{
+							examPaper.Errors.Add(new ParseError(ParseErrorType.UnexpectedError,
+								$"An unexpected error occurred during processing MajorQuestionGroup at index {i}.",
+								index: i, matchedText: pm.MatchedText, innerException: ex));
+							currentContentStart = pm.EndIndex; // 尝试跳过此项
+							continue;
+						}
+					}
+					else if (pm.Type == MatchType.Question)
+					{
+						// 对 Question 的处理
+						try
+						{
+							while (questionStack.Any() && pm.PatternConfig.Priority <= questionStack.Peek().Priority)
+							{
+								questionStack.Pop();
+							}
+
+							// RegexMatch Groups 验证
+							if (pm.RegexMatch.Groups.Count < 3 || string.IsNullOrWhiteSpace(pm.RegexMatch.Groups[1].Value) || string.IsNullOrWhiteSpace(pm.RegexMatch.Groups[2].Value))
+							{
+								examPaper.Errors.Add(new ParseError(ParseErrorType.RegexMatchIssue,
+									$"Question match at index {i} does not have enough regex groups or valid number/text groups (Group 1/2). Skipping this question.",
+									index: i, matchedText: pm.MatchedText));
+								currentContentStart = pm.EndIndex; // 尝试跳过此项
+								continue;
+							}
+
+							float score = 0;
+							// 使用 float.TryParse 避免异常
+							if (pm.RegexMatch.Groups.Count > 4 && pm.RegexMatch.Groups[4].Success) // 假设纯数字分数是 Group 4
+							{
+								if (!float.TryParse(pm.RegexMatch.Groups[4].Value, out score))
+								{
+									examPaper.Errors.Add(new ParseError(ParseErrorType.DataParsing,
+										$"Failed to parse score '{pm.RegexMatch.Groups[4].Value}' for Question at index {i}. Defaulting to 0.",
+										index: i, matchedText: pm.MatchedText));
+								}
+							}
+
+							Question newQuestion = new Question
+							{
+								Number = pm.RegexMatch.Groups[1].Value.Trim(),
+								Stem = pm.RegexMatch.Groups[2].Value.Trim(),
+								Priority = pm.PatternConfig.Priority,
+								Score = score // 赋值解析到的分数
+							};
+
+							if (questionStack.Any())
+							{
+								questionStack.Peek().SubQuestions.Add(newQuestion);
+							}
+							else if (currentMajorQG != null)
+							{
+								currentMajorQG.SubQuestions.Add(newQuestion);
+							}
+							else
+							{
+								examPaper.TopLevelQuestions.Add(newQuestion);
+							}
+
+							currentContentStart = pm.EndIndex;
+							questionStack.Push(newQuestion);
+							currentQuestion = newQuestion;
+						}
+						catch (Exception ex)
+						{
+							examPaper.Errors.Add(new ParseError(ParseErrorType.UnexpectedError,
+								$"An unexpected error occurred during processing Question at index {i}.",
+								index: i, matchedText: pm.MatchedText, innerException: ex));
+							currentContentStart = pm.EndIndex; // 尝试跳过此项
+							continue;
+						}
+					}
+					else if (pm.Type == MatchType.Option)
+					{
+						// 对 Option 的处理
+						try
+						{
+							if (currentQuestion != null)
+							{
+								// RegexMatch Groups 验证
+								if (pm.RegexMatch.Groups.Count < 3 || string.IsNullOrWhiteSpace(pm.RegexMatch.Groups[1].Value) || string.IsNullOrWhiteSpace(pm.RegexMatch.Groups[2].Value))
+								{
+									examPaper.Errors.Add(new ParseError(ParseErrorType.RegexMatchIssue,
+										$"Option match at index {i} does not have enough regex groups or valid label/text groups (Group 1/2). Skipping this option.",
+										index: i, matchedText: pm.MatchedText));
+									currentContentStart = pm.EndIndex; // 尝试跳过此项
+									continue;
+								}
+
+								Option newOption = new Option
+								{
+									Label = pm.RegexMatch.Groups[1].Value.Trim(),
+									Text = pm.RegexMatch.Groups[2].Value.Trim()
+								};
+								currentQuestion.Options.Add(newOption);
+							}
+							else
+							{
+								// 结构性问题：找到孤立的选项，记录错误但继续
+								examPaper.Errors.Add(new ParseError(ParseErrorType.Structural,
+									$"Found isolated Option at index {i}. Options must belong to a question. Ignoring this option.",
+									index: i, matchedText: pm.MatchedText));
+							}
+						}
+						catch (Exception ex)
+						{
+							examPaper.Errors.Add(new ParseError(ParseErrorType.UnexpectedError,
+								$"An unexpected error occurred during processing Option at index {i}.",
+								index: i, matchedText: pm.MatchedText, innerException: ex));
+							// 这里不需要 `continue`，因为即使出错也可能只是该选项的问题，不影响后续处理
+						}
+					}
+
+					currentContentStart = pm.EndIndex; // 更新当前内容起点
+				}
+				catch (Exception ex)
+				{
+					// 捕获任何在处理单个 PotentialMatch 过程中未被更具体 catch 块捕获的意外错误
+					examPaper.Errors.Add(new ParseError(ParseErrorType.UnexpectedError,
+						$"An unexpected error occurred during main loop processing of PotentialMatch at index {i}.",
+						index: i, matchedText: pm.MatchedText, innerException: ex));
+					currentContentStart = Math.Max(currentContentStart, pm.EndIndex); // 尝试跳过当前匹配项，继续下一项
+																					  // 这里不 `continue` 是因为外层循环会推进 `i`，但确保 `currentContentStart` 更新以避免无限循环
+				}
+			}
+
+			// --- 处理所有匹配项之后的剩余内容 ---
+			if (currentContentStart < fullExamText.Length)
+			{
+				try
+				{
+					string remainingText = fullExamText.Substring(currentContentStart).Trim();
+					if (!string.IsNullOrWhiteSpace(remainingText))
+					{
+						if (currentQuestion != null)
+						{
+							ProcessQuestionContent(currentQuestion, remainingText,
+								 GetSubMatchesForRange(allPotentialMatches, currentContentStart, fullExamText.Length, examPaper.Errors),
+								 examPaper.Errors);
+						}
+						else if (currentMajorQG != null)
+						{
+							currentMajorQG.Descript += (string.IsNullOrWhiteSpace(currentMajorQG.Descript) ? "" : "\n") + remainingText;
+						}
+						else
+						{
+							examPaper.Description += (string.IsNullOrWhiteSpace(examPaper.Description) ? "" : "\n") + remainingText;
+						}
+					}
+				}
+				catch (Exception ex)
+				{
+					examPaper.Errors.Add(new ParseError(ParseErrorType.UnexpectedError,
+						"An unexpected error occurred while processing remaining text after all potential matches.",
+						innerException: ex));
+				}
+			}
+
+			return examPaper;
+		}
+
+		/// <summary>
+		/// Extracts the exam title (simple implementation).
+		/// Logs errors to the provided error list instead of throwing.
+		/// </summary>
+		private string GetExamTitle(string examPaperText)
+		{
+			// 内部不再直接抛出异常，而是让外部的 try-catch 负责
+			var firstLine = examPaperText.Split(new[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries)
+										.FirstOrDefault(line => !string.IsNullOrWhiteSpace(line));
+			return firstLine ?? "未识别试卷标题";
+		}
+
+		/// <summary>
+		/// Gets a subset of the given PotentialMatch list within a specified range.
+		/// Logs errors to the provided error list instead of throwing.
+		/// </summary>
+		private List<PotentialMatch> GetSubMatchesForRange(List<PotentialMatch> allMatches, int start, int end, List<ParseError> errors)
+		{
+			// 输入验证，如果输入错误，记录错误并返回空列表
+			if (start < 0 || end < start)
+			{
+				errors.Add(new ParseError(ParseErrorType.Validation,
+					$"Invalid range provided to GetSubMatchesForRange. Start: {start}, End: {end}.",
+					index: start)); // 使用 start 作为大概索引
+				return new List<PotentialMatch>();
+			}
+			// allMatches 为 null 的情况已经在 BuildExamPaper 顶部处理，这里为了方法的健壮性可以再加一次检查
+			if (allMatches == null)
+			{
+				return new List<PotentialMatch>();
+			}
+
+			try
+			{
+				return allMatches.Where(pm => pm.StartIndex >= start && pm.StartIndex < end).ToList();
+			}
+			catch (Exception ex)
+			{
+				errors.Add(new ParseError(ParseErrorType.UnexpectedError,
+					$"An unexpected error occurred getting sub-matches for range [{start}, {end}).",
+					innerException: ex));
+				return new List<PotentialMatch>(); // 出错时返回空列表
+			}
+		}
+
+		/// <summary>
+		/// Processes the content of a Question, mainly for parsing Options and identifying unstructured text.
+		/// Logs errors to the provided error list instead of throwing.
+		/// </summary>
+		private void ProcessQuestionContent(Question question, string contentText, List<PotentialMatch> potentialMatchesInScope, List<ParseError> errors)
+		{
+			// 参数验证，这些是内部方法的契约，如果违反则直接抛出，因为这意味着调用者有错
+			if (question == null) throw new ArgumentNullException(nameof(question), "Question cannot be null in ProcessQuestionContent.");
+			if (contentText == null) throw new ArgumentNullException(nameof(contentText), "Content text cannot be null in ProcessQuestionContent.");
+			if (potentialMatchesInScope == null) throw new ArgumentNullException(nameof(potentialMatchesInScope), "Potential matches in scope cannot be null.");
+
+
+			try
+			{
+				int lastOptionEndIndex = 0;
+
+				foreach (var pm in potentialMatchesInScope.OrderBy(p => p.StartIndex))
+				{
+					// 对每个匹配项的内部处理，记录错误但继续
+					try
+					{
+						if (pm.Type == MatchType.Option)
+						{
+							// 验证索引，记录错误但继续
+							if (pm.StartIndex < lastOptionEndIndex || pm.StartIndex > contentText.Length || pm.EndIndex > contentText.Length)
+							{
+								errors.Add(new ParseError(ParseErrorType.Validation,
+									$"Option match at index {pm.StartIndex} has invalid indices within content text. MatchedText: '{pm.MatchedText}'. Skipping.",
+									index: pm.StartIndex, matchedText: pm.MatchedText));
+								continue; // 跳过当前选项
+							}
+
+							// 处理选项前的文本
+							if (pm.StartIndex > lastOptionEndIndex)
+							{
+								string textBeforeOption = contentText.Substring(lastOptionEndIndex, pm.StartIndex - lastOptionEndIndex).Trim();
+								if (!string.IsNullOrWhiteSpace(textBeforeOption))
+								{
+									question.Stem += (string.IsNullOrWhiteSpace(question.Stem) ? "" : "\n") + textBeforeOption;
+								}
+							}
+
+							// RegexMatch Groups 验证，记录错误但继续
+							if (pm.RegexMatch.Groups.Count < 3 || string.IsNullOrWhiteSpace(pm.RegexMatch.Groups[1].Value) || string.IsNullOrWhiteSpace(pm.RegexMatch.Groups[2].Value))
+							{
+								errors.Add(new ParseError(ParseErrorType.RegexMatchIssue,
+									$"Option regex match '{pm.MatchedText}' does not have enough groups (expected 3) for label and text. Skipping option.",
+									index: pm.StartIndex, matchedText: pm.MatchedText));
+								lastOptionEndIndex = pm.EndIndex; // 更新索引，避免卡死
+								continue; // 跳过当前选项
+							}
+
+							var newOption = new Option
+							{
+								Label = pm.RegexMatch.Groups[1].Value.Trim(),
+								Text = pm.RegexMatch.Groups[2].Value.Trim()
+							};
+							question.Options.Add(newOption);
+							lastOptionEndIndex = pm.EndIndex;
+						}
+						// TODO: If there are SubQuestion types, they can be processed similarly here.
+						// 你可以在此处添加对子问题的处理逻辑，同样需要小心处理其内容和嵌套。
+					}
+					catch (Exception innerEx)
+					{
+						errors.Add(new ParseError(ParseErrorType.UnexpectedError,
+							$"An unexpected error occurred during processing a potential match ({pm.Type}) within question content.",
+							index: pm.StartIndex, matchedText: pm.MatchedText, innerException: innerEx));
+						lastOptionEndIndex = pm.EndIndex; // 尝试更新索引，避免无限循环
+						continue; // 尝试继续下一个匹配项
+					}
+				}
+
+				// 处理所有选项之后的剩余文本
+				if (lastOptionEndIndex < contentText.Length)
+				{
+					string remainingContent = contentText.Substring(lastOptionEndIndex).Trim();
+					if (!string.IsNullOrWhiteSpace(remainingContent))
+					{
+						question.Stem += (string.IsNullOrWhiteSpace(question.Stem) ? "" : "\n") + remainingContent;
+					}
+				}
+			}
+			catch (Exception ex)
+			{
+				// 捕获 ProcessQuestionContent 整个方法内部的意外错误
+				errors.Add(new ParseError(ParseErrorType.UnexpectedError,
+					$"An unexpected error occurred while processing content for Question '{question.Number}'.",
+					innerException: ex));
+			}
+		}
+	}
+
+	public class ExamParser
+	{
+		private readonly ExamParserConfig _config;
+		private readonly ExamDocumentScanner _scanner;
+		private readonly ExamStructureBuilder _builder;
+
+		public ExamParser(ExamParserConfig config)
+		{
+			_config = config ?? throw new ArgumentNullException(nameof(config));
+			_scanner = new ExamDocumentScanner(_config);
+			_builder = new ExamStructureBuilder(_config);
+		}
+
+		/// <summary>
+		/// 解析给定的试卷文本，返回结构化的 ExamPaper 对象。
+		/// </summary>
+		/// <param name="examPaperText">完整的试卷文本</param>
+		/// <returns>解析后的 ExamPaper 对象</returns>
+		public ExamPaper ParseExamPaper(string examPaperText)
+		{
+			// 1. 扫描：一次性扫描整个文本，收集所有潜在的匹配项
+			// Scan 方法现在已经优化为不抛出 ArgumentNullException
+			List<PotentialMatch> allPotentialMatches = _scanner.Scan(examPaperText);
+
+			// 2. 构建：根据扫描结果和原始文本，线性遍历并构建层级结构
+			// BuildExamPaper 现在会返回一个包含错误列表的 ExamPaper 对象
+			// 外部不再需要捕获内部解析异常，只需检查 ExamPaper.Errors 列表
+			return _builder.BuildExamPaper(examPaperText, allPotentialMatches);
+		}
+	}
+}
\ No newline at end of file
diff --git a/TechHelper.Client/Exam/ExamService.cs b/TechHelper.Client/Exam/ExamService.cs
index 84219cb..9c40579 100644
--- a/TechHelper.Client/Exam/ExamService.cs
+++ b/TechHelper.Client/Exam/ExamService.cs
@@ -2,6 +2,9 @@
 using TechHelper.Client.AI;
 using TechHelper.Services;
 using Entities.DTO;
+using System.Net.Http.Json;
+using Newtonsoft.Json;
+using TechHelper.Client.Pages.Exam;
 
 
 namespace TechHelper.Client.Exam
@@ -9,10 +12,13 @@ namespace TechHelper.Client.Exam
 	public class ExamService : IExamService
 	{
 		private IAIService aIService;
+		private IHttpClientFactory httpClientFactory;
 
-		public ExamService(IAIService aIService)
+		public ExamService(IAIService aIService,
+			IHttpClientFactory httpClientFactory)
 		{
 			this.aIService = aIService;
+			this.httpClientFactory = httpClientFactory;
 		}
 
 		public ApiResponse ConvertToXML<T>(string xmlContent)
@@ -86,7 +92,7 @@ namespace TechHelper.Client.Exam
 				{
 					Status = false,
 					Result = null,
-					Message = $"处理试题分割时发生内部错误: {ex.Message}" 
+					Message = $"处理试题分割时发生内部错误: {ex.Message}"
 				};
 			}
 		}
@@ -127,6 +133,31 @@ namespace TechHelper.Client.Exam
 			}
 		}
 
+		public async Task<ApiResponse> GetAllExam(string user)
+		{
+			using (var client = httpClientFactory.CreateClient("Default"))
+			{
+				var response = await client.GetAsync($"exam/getAllPreview?user={user}");
+
+
+				if (response.IsSuccessStatusCode)
+				{
+					var content = await response.Content.ReadAsStringAsync();
+					var result = JsonConvert.DeserializeObject<List<ExamDto>>(content);
+					return ApiResponse.Success(result: result);
+				}
+				else
+				{
+					return ApiResponse.Error(await response.Content.ReadAsStringAsync());
+				}
+			}
+		}
+
+		public async Task<ApiResponse> GetExam(Guid guid)
+		{
+			return ApiResponse.Success("HELLO");
+		}
+
 		public async Task<ApiResponse> ParseSingleQuestionGroup(string examContent)
 		{
 			try
@@ -163,9 +194,19 @@ namespace TechHelper.Client.Exam
 			}
 		}
 
-		public Task<ApiResponse> SaveParsedExam(ExamDto examDto)
+		public async Task<ApiResponse> SaveParsedExam(ExamDto examDto)
 		{
-			throw new NotImplementedException();
+			using (var client = httpClientFactory.CreateClient("Default"))
+			{
+				var respont = await client.PostAsJsonAsync("exam/add",
+					examDto);
+
+				if (respont.StatusCode == System.Net.HttpStatusCode.OK)
+				{
+					return new ApiResponse(true, "ok");
+				}
+				return new ApiResponse("false");
+			}
 		}
 	}
 }
diff --git a/TechHelper.Client/Exam/IExamService.cs b/TechHelper.Client/Exam/IExamService.cs
index ff4a95a..1f20dab 100644
--- a/TechHelper.Client/Exam/IExamService.cs
+++ b/TechHelper.Client/Exam/IExamService.cs
@@ -10,5 +10,8 @@ namespace TechHelper.Client.Exam
 		public Task<ApiResponse> SaveParsedExam(ExamDto examDto);
 		public Task<ApiResponse> ParseSingleQuestionGroup(string examContent);
 		public ApiResponse ConvertToXML<T>(string xmlContent);
+
+		public Task<ApiResponse> GetAllExam(string user);
+		public Task<ApiResponse> GetExam(Guid guid);
 	}
 }
diff --git a/TechHelper.Client/HttpInterceptor/HttpInterceptorHandlerService.cs b/TechHelper.Client/HttpInterceptor/HttpInterceptorHandlerService.cs
index 569f6b4..e2ebb36 100644
--- a/TechHelper.Client/HttpInterceptor/HttpInterceptorHandlerService.cs
+++ b/TechHelper.Client/HttpInterceptor/HttpInterceptorHandlerService.cs
@@ -31,7 +31,6 @@ namespace BlazorProducts.Client.HttpInterceptor
 		{
 			var absolutePath = request.RequestUri?.AbsolutePath;
 
-			_serviceProvider.Add("HELLO");
 			if (absolutePath != null && !absolutePath.Contains("token") && !absolutePath.Contains("account"))
 			{
 				var token = await _refreshTokenService.TryRefreshToken();
diff --git a/TechHelper.Client/Layout/MainLayout.razor b/TechHelper.Client/Layout/MainLayout.razor
index c3bec9d..e3345db 100644
--- a/TechHelper.Client/Layout/MainLayout.razor
+++ b/TechHelper.Client/Layout/MainLayout.razor
@@ -4,7 +4,7 @@
 <MudSnackbarProvider />
 <MudPopoverProvider />
 
-
+@* 
 <MudPaper Style="position: fixed;
                      top: 0;
                      left: 0;
@@ -48,4 +48,39 @@
 	</MudPaper>
 
 
+</MudPaper>
+
+ *@
+
+<MudPaper Style="position: fixed;
+                     top: 0;
+                     left: 0;
+                     width: 100vw;
+                     height: 100vh;
+                     background-image: url('/ref/bg4.jpg');
+                     background-size: cover;
+                     background-position: center center;
+                     background-repeat: no-repeat;
+                     filter: blur(10px);
+                     z-index: -1;">
+</MudPaper>
+<MudPaper Style="background-color:transparent ; height:100vh" Class="overflow-hidden">
+
+	<MudPaper Class="justify-content-center" Style="background-color:blue; height: 50px">
+		<MudStack Row="true" Class="justify-content-between">
+
+			<NavBar Class="flex-grow-1" Style="background-color:transparent; color:white" />
+			<AuthLinks Class="justify-content-end " Style="background-color:transparent; color:white" />
+		</MudStack>
+	</MudPaper>
+
+	<MudPaper Class="d-flex flex-grow-0 " Style="background-color:#30303022; height:calc(100vh - 50px)">
+@* 		<MudPaper Class="ma-1" Width="200px">
+
+		</MudPaper> *@
+
+		<MudPaper Class="d-flex ma-1 flex-grow-1 overflow-auto">
+			@Body
+		</MudPaper>
+	</MudPaper>
 </MudPaper>
\ No newline at end of file
diff --git a/TechHelper.Client/Layout/NavBar.razor b/TechHelper.Client/Layout/NavBar.razor
index 659bbb8..00b7880 100644
--- a/TechHelper.Client/Layout/NavBar.razor
+++ b/TechHelper.Client/Layout/NavBar.razor
@@ -2,9 +2,9 @@
 	<MudStack Row="true">
 		<MudNavLink Class="py-5 px-3" Href="" Match="NavLinkMatch.All"> 主页 </MudNavLink>
 		<MudNavLink Class="py-5 px-3" Href="Account/Manage"> 个人中心 </MudNavLink>
-		<MudNavLink Class="py-5 px-3" Href="Edit"> 编辑器 </MudNavLink>
+		<MudNavLink Class="py-5 px-3" Href="exam"> Exam </MudNavLink>
 		<MudNavLink Class="py-5 px-3" Href="ai"> AI </MudNavLink>
-		<MudNavLink Class="py-5 px-3" Href="test"> 测试页面 </MudNavLink>
+		<MudNavLink Class="py-5 px-3" Href="test"> Test </MudNavLink>
 	</MudStack>
 </MudPaper>
 
diff --git a/TechHelper.Client/Layout/RedirectToLogin.razor b/TechHelper.Client/Layout/RedirectToLogin.razor
index a1cf400..6906319 100644
--- a/TechHelper.Client/Layout/RedirectToLogin.razor
+++ b/TechHelper.Client/Layout/RedirectToLogin.razor
@@ -4,6 +4,6 @@
 @code {
     protected override void OnInitialized()
     {
-        Navigation.NavigateToLogin("authentication/login");
+        Navigation.NavigateToLogin("/login");
     }
 }
diff --git a/TechHelper.Client/Pages/Author/Registration.razor b/TechHelper.Client/Pages/Author/Registration.razor
index 9d5cf5d..d647f92 100644
--- a/TechHelper.Client/Pages/Author/Registration.razor
+++ b/TechHelper.Client/Pages/Author/Registration.razor
@@ -4,10 +4,6 @@
 
 @inject ISnackbar Snackbar
 
-<MudButton Variant="Variant.Filled" Color="Color.Primary" @onclick="@(() => Snackbar.Add("Simple Snackbar"))">
-	Open Snackbar
-</MudButton>
-
 
 <MudText Typo="Typo.h2"> Create Account </MudText>
 
diff --git a/TechHelper.Client/Pages/Editor/Test.razor b/TechHelper.Client/Pages/Editor/Test.razor
deleted file mode 100644
index 425917c..0000000
--- a/TechHelper.Client/Pages/Editor/Test.razor
+++ /dev/null
@@ -1,50 +0,0 @@
-@page "/test"
-<MudPaper Class="d-flex flex-column justify-space-around flex-grow-1 overflow-scroll">
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-	<MudText>HELLO </MudText>
-</MudPaper>
-
-@code {
-
-}
diff --git a/TechHelper.Client/Pages/Editor/TextEditor.razor b/TechHelper.Client/Pages/Editor/TextEditor.razor
new file mode 100644
index 0000000..5226add
--- /dev/null
+++ b/TechHelper.Client/Pages/Editor/TextEditor.razor
@@ -0,0 +1,50 @@
+@using Blazored.TextEditor
+
+<MudPaper Height="@Height" Class="@Class" Style="@Style">
+	<MudPaper Elevation="0" Style="height:calc(100% - 50px)">
+		<BlazoredTextEditor @ref="@BlazorTextEditor">
+			<ToolbarContent>
+				<select class="ql-header">
+					<option selected=""></option>
+					<option value="1"></option>
+					<option value="2"></option>
+					<option value="3"></option>
+					<option value="4"></option>
+					<option value="5"></option>
+				</select>
+				<span class="ql-formats">
+					<button class="ql-bold"></button>
+					<button class="ql-italic"></button>
+					<button class="ql-underline"></button>
+					<button class="ql-strike"></button>
+				</span>
+				<span class="ql-formats">
+					<select class="ql-color"></select>
+					<select class="ql-background"></select>
+				</span>
+				<span class="ql-formats">
+					<button class="ql-list" value="ordered"></button>
+					<button class="ql-list" value="bullet"></button>
+				</span>
+				<span class="ql-formats">
+					<button class="ql-link"></button>
+				</span>
+			</ToolbarContent>
+			<EditorContent>
+			</EditorContent>
+		</BlazoredTextEditor>
+	</MudPaper>
+</MudPaper>
+
+
+@code {
+	[Parameter]
+	public BlazoredTextEditor BlazorTextEditor { get; set; }
+	[Parameter]
+	public string Height { get; set; } = "100%";
+	[Parameter]
+	public string Class { get; set; } = "";
+	[Parameter]
+	public string Style { get; set; } = "";
+
+}
\ No newline at end of file
diff --git a/TechHelper.Client/Pages/Exam/ChoiceQuestion.razor b/TechHelper.Client/Pages/Exam/ChoiceQuestion.razor
deleted file mode 100644
index aad45fc..0000000
--- a/TechHelper.Client/Pages/Exam/ChoiceQuestion.razor
+++ /dev/null
@@ -1 +0,0 @@
-<h3>ChoiceQuestion</h3>
diff --git a/TechHelper.Client/Pages/Exam/ExamCreate.razor b/TechHelper.Client/Pages/Exam/ExamCreate.razor
new file mode 100644
index 0000000..e924918
--- /dev/null
+++ b/TechHelper.Client/Pages/Exam/ExamCreate.razor
@@ -0,0 +1,132 @@
+@page "/exam/create"
+@using Blazored.TextEditor
+@using Entities.DTO
+@using TechHelper.Client.Exam
+@inject ILogger<Home> Logger
+@inject ISnackbar Snackbar;
+@using Microsoft.AspNetCore.Components
+@using System.Globalization;
+@using TechHelper.Client.Pages.Editor
+
+<MudPaper Elevation="5" Class="d-flex overflow-hidden flex-grow-1" Style="overflow:hidden; position:relative;height:100%">
+	<MudDrawerContainer Class="mud-height-full flex-grow-1" Style="height:100%">
+		<MudDrawer @bind-Open="@_open" Elevation="0" Variant="@DrawerVariant.Persistent" Color="Color.Primary" Anchor="Anchor.End" OverlayAutoClose="true">
+			<MudDrawerHeader>
+				<MudText Typo="Typo.h6"> 配置 </MudText>
+			</MudDrawerHeader>
+
+			<MudStack Class="overflow-auto">
+				<ParseRoleConfig />
+				<MudButton Color="Color.Success"> ParseExam </MudButton>
+			</MudStack>
+		</MudDrawer>
+		<MudStack Row="true" Class="flex-grow-1" Style="height:100%">
+			<ExamView Class="overflow-auto" ParsedExam="ExamContent"></ExamView>
+
+			<MudPaper Class="ma-2">
+				<MudPaper Elevation="0" Style="height:calc(100% - 80px)">
+					<BlazoredTextEditor @ref="@_textEditor">
+						<ToolbarContent>
+							<select class="ql-header">
+								<option selected=""></option>
+								<option value="1"></option>
+								<option value="2"></option>
+								<option value="3"></option>
+								<option value="4"></option>
+								<option value="5"></option>
+							</select>
+							<span class="ql-formats">
+								<button class="ql-bold"></button>
+								<button class="ql-italic"></button>
+								<button class="ql-underline"></button>
+								<button class="ql-strike"></button>
+							</span>
+							<span class="ql-formats">
+								<select class="ql-color"></select>
+								<select class="ql-background"></select>
+							</span>
+							<span class="ql-formats">
+								<button class="ql-list" value="ordered"></button>
+								<button class="ql-list" value="bullet"></button>
+							</span>
+							<span class="ql-formats">
+								<button class="ql-link"></button>
+							</span>
+						</ToolbarContent>
+						<EditorContent>
+						</EditorContent>
+					</BlazoredTextEditor>
+				</MudPaper>
+			</MudPaper>
+
+			<MudButtonGroup Vertical="true" Color="Color.Primary" Variant="Variant.Filled">
+				<MudIconButton Icon="@Icons.Material.Filled.Settings" OnClick="@ToggleDrawer" Color="Color.Secondary" />
+				<MudIconButton Icon="@Icons.Material.Filled.TransitEnterexit" OnClick="@ParseExam" Color="Color.Secondary" />
+				<MudIconButton Icon="@Icons.Material.Filled.Save" OnClick="@ToggleDrawer" Color="Color.Secondary" />
+				<MudIconButton Icon="@Icons.Material.Filled.Publish" OnClick="@Publish" Color="Color.Secondary" />
+			</MudButtonGroup>
+		</MudStack>
+	</MudDrawerContainer>
+</MudPaper>
+
+@code {
+
+	[CascadingParameter]
+	private Task<AuthenticationState> authenticationStateTask { get; set; }
+
+	private bool _open = false;
+
+	private void ToggleDrawer()
+	{
+		_open = !_open;
+	}
+	private BlazoredTextEditor _textEditor = new BlazoredTextEditor();
+	private ExamPaper _parsedExam = new ExamPaper();
+	private ExamDto ExamContent = new ExamDto();
+
+	private ExamParserConfig _examParserConfig { get; set; } = new ExamParserConfig();
+
+	private async Task ParseExam()
+	{
+
+		var plainText = await _textEditor.GetText();
+
+
+		if (!string.IsNullOrWhiteSpace(plainText))
+		{
+			try
+			{
+				var exampar = new ExamParser(_examParserConfig);
+				_parsedExam = exampar.ParseExamPaper(plainText);
+				Snackbar.Add("试卷解析成功。", Severity.Success);
+				Snackbar.Add($"{_parsedExam.Errors}。", Severity.Success);
+				ExamContent = _parsedExam.ConvertToExamDTO();
+			}
+			catch (Exception ex)
+			{
+				Console.WriteLine($"Error parsing exam paper: {ex.Message}");
+				Console.WriteLine($"Stack Trace: {ex.StackTrace}");
+
+				Snackbar.Add($"解析试卷时发生错误：{ex.Message}", Severity.Error);
+
+			}
+		}
+		else
+		{
+			Snackbar.Add("试卷文本为空，无法解析。", Severity.Warning);
+		}
+		StateHasChanged();
+	}
+
+	[Inject]
+	public IExamService examService { get; set; }
+
+
+	public async Task Publish()
+	{
+		ExamContent.CreaterEmail = authenticationStateTask.Result.User.Identity.Name;
+		var apiRespon = await examService.SaveParsedExam(ExamContent);
+		Snackbar.Add(apiRespon.Message);
+	}
+
+}
\ No newline at end of file
diff --git a/TechHelper.Client/Pages/Exam/ExamEdit.razor b/TechHelper.Client/Pages/Exam/ExamEdit.razor
new file mode 100644
index 0000000..ffc57c5
--- /dev/null
+++ b/TechHelper.Client/Pages/Exam/ExamEdit.razor
@@ -0,0 +1,15 @@
+@page "/exam/edit/{ExamId:Guid}"
+@using TechHelper.Client.Exam
+
+@code {
+	[Parameter]
+	public Guid ExamId { get; set; }
+
+	[Inject]
+	public IExamService ExamService { get; set; }
+
+	protected override async Task OnInitializedAsync()
+	{
+		await ExamService.GetExam(Guid.NewGuid());
+	}
+}
diff --git a/TechHelper.Client/Pages/Exam/ExamGroupView.razor b/TechHelper.Client/Pages/Exam/ExamGroupView.razor
new file mode 100644
index 0000000..074ca81
--- /dev/null
+++ b/TechHelper.Client/Pages/Exam/ExamGroupView.razor
@@ -0,0 +1,48 @@
+@using Entities.DTO
+@using TechHelper.Client.Exam
+
+
+<MudPaper Elevation=@Elevation Class=@Class>
+
+	@foreach (var majorQG in MajorQGList)
+	{
+		<MudStack Row="true">
+			<MudText Typo="Typo.h6">@majorQG.Title</MudText>
+			@if (majorQG.Score > 0)
+			{
+				<MudText Typo="Typo.body2"><b>总分:</b> @majorQG.Score 分</MudText>
+			}
+		</MudStack>
+
+
+		@if (!string.IsNullOrWhiteSpace(majorQG.Descript))
+		{
+			<MudText Typo="Typo.body2">@((MarkupString)majorQG.Descript.Replace("\n", "<br />"))</MudText>
+		}
+
+		@if (majorQG.SubQuestions.Any())
+		{
+			@foreach (var question in majorQG.SubQuestions)
+			{
+				<QuestionCard Question="question" Elevation=@Elevation Class="my-2 pa-1" />
+			}
+		}
+
+		@if (majorQG.SubQuestionGroups.Any())
+		{
+			<ExamGroupView MajorQGList="majorQG.SubQuestionGroups" Elevation="1" />
+		}
+	}
+
+</MudPaper>
+
+@code {
+	[Parameter]
+	public List<QuestionGroupDto> MajorQGList { get; set; }
+
+	[Parameter]
+	public string Class { get; set; } = "my-2 pa-1";
+
+	[Parameter]
+	public int Elevation { get; set; } = 0;
+}
\ No newline at end of file
diff --git a/TechHelper.Client/Pages/Exam/ExamManager.razor b/TechHelper.Client/Pages/Exam/ExamManager.razor
new file mode 100644
index 0000000..0c49f95
--- /dev/null
+++ b/TechHelper.Client/Pages/Exam/ExamManager.razor
@@ -0,0 +1,55 @@
+@using Entities.DTO
+@using Microsoft.AspNetCore.Authorization
+@using TechHelper.Client.Exam
+
+
+@page "/exam/manage"
+@attribute [Authorize]
+
+
+@if (isloding)
+{
+	<MudText> 正在加载 </MudText>
+}
+else
+{
+
+}
+
+@foreach (var item in examDtos)
+{
+	<ExamPreview examDto="item"> </ExamPreview>
+}
+
+
+@code {
+	[Inject]
+	public IExamService ExamService { get; set; }
+
+	[Inject]
+	public ISnackbar Snackbar { get; set; }
+
+	[CascadingParameter]
+	private Task<AuthenticationState> authenticationStateTask { get; set; }
+
+	private List<ExamDto> examDtos = new List<ExamDto>();
+
+	private bool isloding = true;
+
+	protected override async Task OnInitializedAsync()
+	{
+		GetExam();
+	}
+
+
+	private async void GetExam()
+	{
+		isloding = true;
+		Snackbar.Add("正在加载", Severity.Info);
+		var result = await ExamService.GetAllExam(authenticationStateTask.Result.User.Identity.Name);
+		examDtos = result.Result as List<ExamDto> ?? new List<ExamDto>();
+		isloding = false;
+		Snackbar.Add("加载成功", Severity.Info);
+		StateHasChanged();
+	}
+}
diff --git a/TechHelper.Client/Pages/Exam/ExamPreview.razor b/TechHelper.Client/Pages/Exam/ExamPreview.razor
new file mode 100644
index 0000000..bcbd632
--- /dev/null
+++ b/TechHelper.Client/Pages/Exam/ExamPreview.razor
@@ -0,0 +1,37 @@
+@using Entities.DTO
+
+<MudPaper Width="@Width" Height="@Height" @onclick="ExamClick">
+	<MudCard>
+		<MudCardHeader>
+			<MudText> @examDto.AssignmentTitle </MudText>
+		</MudCardHeader>
+
+		<MudCardContent>
+			<MudText> @examDto.Description </MudText>
+		</MudCardContent>
+	</MudCard>
+</MudPaper>
+
+
+@code {
+
+	[Inject]
+	public NavigationManager navigationManager { get; set; }
+
+	[Parameter]
+	public ExamDto examDto { get; set; }
+
+
+	[Parameter]
+	public string? Width { get; set; } = "200";
+
+
+	[Parameter]
+	public string? Height { get; set; } = "400";
+
+
+	private void ExamClick()
+	{
+		navigationManager.NavigateTo($"exam/Edit/{examDto.AssignmentId}");
+	}
+}
diff --git a/TechHelper.Client/Pages/Exam/ExamView.razor b/TechHelper.Client/Pages/Exam/ExamView.razor
new file mode 100644
index 0000000..b9e5361
--- /dev/null
+++ b/TechHelper.Client/Pages/Exam/ExamView.razor
@@ -0,0 +1,23 @@
+@using Entities.DTO
+@using TechHelper.Client.Exam
+<MudPaper Height="@Height" Class="@Class" Style="@Style" Width="@Width">
+	<MudText Class="d-flex justify-content-center" Typo="Typo.h6"> @ParsedExam.AssignmentTitle </MudText>
+	<MudText Typo="Typo.body1"> @ParsedExam.Description </MudText>
+
+	<ExamGroupView MajorQGList="@ParsedExam.QuestionGroups.SubQuestionGroups" Elevation="1" Class="ma-0 pa-2" />
+</MudPaper>
+
+
+@code {
+
+	[Parameter]
+	public ExamDto ParsedExam { get; set; } = new ExamDto();
+	[Parameter]
+	public string Height { get; set; } = "100%";
+	[Parameter]
+	public string Width { get; set; } = "100%";
+	[Parameter]
+	public string Class { get; set; } = "";
+	[Parameter]
+	public string Style { get; set; } = "";
+}
\ No newline at end of file
diff --git a/TechHelper.Client/Pages/Exam/Index.razor b/TechHelper.Client/Pages/Exam/Index.razor
new file mode 100644
index 0000000..8f1f83f
--- /dev/null
+++ b/TechHelper.Client/Pages/Exam/Index.razor
@@ -0,0 +1,7 @@
+@page "/exam"
+
+
+<MudText>HELLO WORLD</MudText>
+@code {
+
+}
diff --git a/TechHelper.Client/Pages/Exam/ParseRoleConfig.razor b/TechHelper.Client/Pages/Exam/ParseRoleConfig.razor
new file mode 100644
index 0000000..2bac41c
--- /dev/null
+++ b/TechHelper.Client/Pages/Exam/ParseRoleConfig.razor
@@ -0,0 +1,127 @@
+@using TechHelper.Client.Exam
+
+<MudPaper Outlined="true" Class="mt-2">
+
+	<MudRadioGroup @bind-Value="_examParser">
+		@foreach (ExamParserEnum item in Enum.GetValues(typeof(ExamParserEnum)))
+		{
+			<MudRadio T="ExamParserEnum" Value="@item">@item</MudRadio>
+		}
+	</MudRadioGroup>
+
+	<MudTextField @bind-Value="_ParserConfig" Label="正则表达式模式" Variant="Variant.Outlined" FullWidth="true" Class="mb-2" />
+	<MudNumericField Label="优先级" @bind-Value="_Priority" Variant="Variant.Outlined" Min="1" Max="100" />
+	<MudButton OnClick="AddPattern" Variant="Variant.Filled" Color="Color.Primary" Class="mt-2">添加模式</MudButton>
+
+
+	<MudText Typo="Typo.subtitle1" Class="mb-2">所有已配置模式:</MudText>
+
+
+	@if (ExamParserConfig.MajorQuestionGroupPatterns.Any())
+	{
+		<MudExpansionPanel Text="大题组模式详情" Class="mb-2">
+			<MudStack>
+				@foreach (var config in ExamParserConfig.MajorQuestionGroupPatterns)
+				{
+					<MudChip T="string">
+						**模式:** <code>@config.Pattern</code>, **优先级:** @config.Priority
+					</MudChip>
+				}
+			</MudStack>
+		</MudExpansionPanel>
+	}
+	else
+	{
+		<MudText Typo="Typo.body2" Class="mb-2">暂无大题组模式。</MudText>
+	}
+
+	@* 题目模式详情 *@
+	@if (ExamParserConfig.QuestionPatterns.Any())
+	{
+		<MudExpansionPanel Text="题目模式详情" Class="mb-2">
+			<MudStack>
+				@foreach (var config in ExamParserConfig.QuestionPatterns)
+				{
+					<MudChip T="string">
+						**模式:** <code>@config.Pattern</code>, **优先级:** @config.Priority
+					</MudChip>
+				}
+			</MudStack>
+		</MudExpansionPanel>
+	}
+	else
+	{
+		<MudText Typo="Typo.body2" Class="mb-2">暂无题目模式。</MudText>
+	}
+
+	@if (ExamParserConfig.OptionPatterns.Any())
+	{
+		<MudExpansionPanel Text="选项模式详情" Class="mb-2">
+			<MudStack>
+				@foreach (var config in ExamParserConfig.OptionPatterns)
+				{
+					<MudChip T="string">
+						**模式:** <code>@config.Pattern</code>, **优先级:** @config.Priority
+					</MudChip>
+				}
+			</MudStack>
+		</MudExpansionPanel>
+	}
+	else
+	{
+		<MudText Typo="Typo.body2" Class="mb-2">暂无选项模式。</MudText>
+	}
+
+
+	<MudButton Variant="Variant.Filled" Color="Color.Secondary" OnClick="ResetPatterns">重置默认规则</MudButton>
+
+</MudPaper>
+
+
+@code {
+
+
+	public ExamParserEnum _examParser { get; set; } = ExamParserEnum.MajorQuestionGroupPatterns;
+	private string _ParserConfig;
+	private int _Priority = 1;
+
+	[Parameter]
+	public ExamParserConfig ExamParserConfig { get; set; } = new ExamParserConfig();
+
+	[Inject]
+	public ISnackbar Snackbar { get; set; }
+
+	private void AddPattern()
+	{
+
+		switch ((ExamParserEnum)_examParser)
+		{
+			case ExamParserEnum.MajorQuestionGroupPatterns:
+				ExamParserConfig.MajorQuestionGroupPatterns.Add(new RegexPatternConfig(_ParserConfig, _Priority));
+				Snackbar.Add($"已添加大题组模式: {_ParserConfig}, 优先级: {_Priority}", Severity.Success); 
+				break;
+			case ExamParserEnum.QuestionPatterns:
+				ExamParserConfig.QuestionPatterns.Add(new RegexPatternConfig(_ParserConfig, _Priority));
+				Snackbar.Add($"已添加题目模式: {_ParserConfig}, 优先级: {_Priority}", Severity.Success);
+				break;
+			case ExamParserEnum.OptionPatterns:
+				ExamParserConfig.OptionPatterns.Add(new RegexPatternConfig(_ParserConfig, _Priority));
+				Snackbar.Add($"已添加选项模式: {_ParserConfig}, 优先级: {_Priority}", Severity.Success);
+				break;
+			default:
+				Snackbar.Add("请选择要添加的模式类型。");
+				break;
+
+		}
+
+		StateHasChanged();
+
+	}
+
+
+	private void ResetPatterns()
+	{
+		ExamParserConfig = new ExamParserConfig();
+		StateHasChanged(); 
+	}
+}
\ No newline at end of file
diff --git a/TechHelper.Client/Pages/Exam/QuestionBase.razor b/TechHelper.Client/Pages/Exam/QuestionBase.razor
deleted file mode 100644
index d718c28..0000000
--- a/TechHelper.Client/Pages/Exam/QuestionBase.razor
+++ /dev/null
@@ -1,11 +0,0 @@
-<MudText> @Title </MudText>
-
-
-@code {
-
-	[Parameter]
-	public string Title { get; set; }
-
-	[Parameter]
-	public string Answer { get; set; }
-}
diff --git a/TechHelper.Client/Pages/Exam/QuestionCard.razor b/TechHelper.Client/Pages/Exam/QuestionCard.razor
new file mode 100644
index 0000000..72c27bc
--- /dev/null
+++ b/TechHelper.Client/Pages/Exam/QuestionCard.razor
@@ -0,0 +1,36 @@
+@using Entities.DTO
+@using TechHelper.Client.Exam
+
+<MudPaper Class=@Class Elevation=@Elevation Outlined="false">
+
+	<MudText Typo="Typo.subtitle1">
+		<b>@Question.Index</b> @((MarkupString)Question.Stem.Replace("\n", "<br />"))
+		@if (Question.Score > 0)
+		{
+			<MudText Typo="Typo.body2" Class="d-inline ml-2">(@Question.Score 分)</MudText>
+		}
+	</MudText>
+
+	@if (Question.Options.Any())
+	{
+		<div class="mt-2">
+			@foreach (var option in Question.Options)
+			{
+				var tempOption = option;
+				<p>@((MarkupString)(tempOption.Value.Replace("\n", "<br />")))</p>
+			}
+		</div>
+	}
+
+</MudPaper>
+
+@code {
+	[Parameter]
+	public SubQuestionDto Question { get; set; }
+
+	[Parameter]
+	public string Class { get; set; }
+
+	[Parameter]
+	public int Elevation { get; set; }
+}
\ No newline at end of file
diff --git a/TechHelper.Client/Pages/Exam/QuestionGroup.razor b/TechHelper.Client/Pages/Exam/QuestionGroup.razor
deleted file mode 100644
index 341daae..0000000
--- a/TechHelper.Client/Pages/Exam/QuestionGroup.razor
+++ /dev/null
@@ -1,4 +0,0 @@
-
-@code {
-
-}
diff --git a/TechHelper.Client/Pages/Exam/QuestionGroupDisplay.razor b/TechHelper.Client/Pages/Exam/QuestionGroupDisplay.razor
deleted file mode 100644
index 616b288..0000000
--- a/TechHelper.Client/Pages/Exam/QuestionGroupDisplay.razor
+++ /dev/null
@@ -1,69 +0,0 @@
-@using TechHelper.Client.Exam
-
-<MudCard Class="@(IsNested ? "mb-3 pa-2" : "my-4")" Outlined="@IsNested">
-	@if (QuestionGroup.Title != string.Empty)
-	{
-		<MudCardHeader>
-			<MudStack>
-
-				<MudStack Row="true" AlignItems="AlignItems.Center">
-					<MudText Typo="@(IsNested ? Typo.h6 : Typo.h5)">@QuestionGroup.Id. </MudText> @* 嵌套时字号稍小 *@
-					<MudText Typo="@(IsNested ? Typo.h6 : Typo.h5)">@QuestionGroup.Title</MudText>
-				</MudStack>
-				@if (!string.IsNullOrEmpty(QuestionGroup.QuestionReference))
-				{
-					<MudText Class="mt-2" Style="white-space: pre-wrap;">@QuestionGroup.QuestionReference</MudText>
-				}
-			</MudStack>
-		</MudCardHeader>
-	}
-	<MudCardContent>
-		@* 渲染直接子题目 *@
-		@if (QuestionGroup.SubQuestions != null && QuestionGroup.SubQuestions.Any())
-		{
-			@foreach (var qitem in QuestionGroup.SubQuestions)
-			{
-				<MudStack Row="true" AlignItems="AlignItems.Baseline" Class="mb-2">
-					<MudText Typo="Typo.body1">@qitem.SubId. </MudText>
-					<MudText Typo="Typo.body1">@qitem.Stem</MudText>
-				</MudStack>
-
-				@if (qitem.Options != null && qitem.Options.Any())
-				{
-					@foreach (var oitem in qitem.Options)
-					{
-						<MudText Typo="Typo.body2" Class="ml-6 mb-2">@oitem.Value</MudText>
-					}
-				}
-
-				@if (!string.IsNullOrEmpty(qitem.SampleAnswer))
-				{
-					<MudText Typo="Typo.body2" Color="Color.Tertiary" Class="ml-6 mb-2">示例答案: @qitem.SampleAnswer</MudText>
-				}
-			}
-		}
-
-		@* 递归渲染子题组 *@
-		@if (QuestionGroup.SubQuestionGroups != null && QuestionGroup.SubQuestionGroups.Any())
-		{
-			<MudDivider Class="my-4" />
-			@if (!IsNested) // 只有顶级大题才显示“嵌套题组”标题
-			{
-				<MudText Typo="Typo.subtitle1" Class="mb-2">相关题组:</MudText>
-			}
-			@foreach (var subGroup in QuestionGroup.SubQuestionGroups)
-			{
-				<QuestionGroupDisplay QuestionGroup="subGroup" IsNested="true" /> @* 递归调用自身 *@
-			}
-		}
-	</MudCardContent>
-
-</MudCard>
-
-@code {
-	[Parameter]
-	public TechHelper.Client.Exam.QuestionGroup QuestionGroup { get; set; } = new TechHelper.Client.Exam.QuestionGroup();
-
-	[Parameter]
-	public bool IsNested { get; set; } = false; // 判断是否是嵌套的题组，用于调整样式和显示标题
-}
\ No newline at end of file
diff --git a/TechHelper.Client/Pages/Exam/_Imports.razor b/TechHelper.Client/Pages/Exam/_Imports.razor
new file mode 100644
index 0000000..b3e854c
--- /dev/null
+++ b/TechHelper.Client/Pages/Exam/_Imports.razor
@@ -0,0 +1,2 @@
+@using TechHelper.Client.Shared
+@layout ExamLayout
diff --git a/TechHelper.Client/Pages/Home.razor b/TechHelper.Client/Pages/Home.razor
index 9dec28e..ab98721 100644
--- a/TechHelper.Client/Pages/Home.razor
+++ b/TechHelper.Client/Pages/Home.razor
@@ -19,3 +19,100 @@
 </AuthorizeView>
 
 <MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
+<MudText>Hello </MudText>
diff --git a/TechHelper.Client/Program.cs b/TechHelper.Client/Program.cs
index 77f6bd0..8851624 100644
--- a/TechHelper.Client/Program.cs
+++ b/TechHelper.Client/Program.cs
@@ -38,6 +38,17 @@ builder.Services.AddScoped<RefreshTokenService>();
 builder.Services.AddScoped<IClassServices, ClasssServices>();
 builder.Services.AddScoped<IEmailSender, QEmailSender>();
 builder.Services.AddTransient<HttpInterceptorHandlerService>();
+
+builder.Services.AddHttpClient("WebApiClient", client =>
+{
+	var baseAddress = builder.Configuration.GetSection("ApiConfiguration:BaseAddress").Value;
+	client.BaseAddress = new Uri(baseAddress);
+	client.Timeout = TimeSpan.FromSeconds(30);
+	client.DefaultRequestHeaders.Add("Accept", "application/json");
+}).AddHttpMessageHandler<HttpInterceptorHandlerService>();
+builder.Services.AddScoped(sp => sp.GetRequiredService<IHttpClientFactory>().CreateClient("WebApiClient"));
+
+
 builder.Services.AddHttpClient("Default", (sp, cl) =>
 {
 	var apiConfiguration = sp.GetRequiredService<IOptions<ApiConfiguration>>().Value;
diff --git a/TechHelper.Client/Shared/ExamLayout.razor b/TechHelper.Client/Shared/ExamLayout.razor
new file mode 100644
index 0000000..3fd6818
--- /dev/null
+++ b/TechHelper.Client/Shared/ExamLayout.razor
@@ -0,0 +1,18 @@
+@inherits LayoutComponentBase
+@layout AccountLayout
+
+
+<MudPaper Class="d-flex flex-row flex-grow-1 overflow-hidden" Height="100%">
+
+	<MudPaper Width="200px">
+		<h1>Manage your account</h1>
+		<h2>Change your account settings</h2>
+		<MudDivider Class="flex-grow-0" />
+		<ExamNavMenu />
+
+	</MudPaper>
+
+	<MudPaper Class="flex-grow-1 overflow-auto">
+		@Body
+	</MudPaper>
+</MudPaper>
diff --git a/TechHelper.Client/Shared/ExamNavMenu.razor b/TechHelper.Client/Shared/ExamNavMenu.razor
new file mode 100644
index 0000000..2f42f21
--- /dev/null
+++ b/TechHelper.Client/Shared/ExamNavMenu.razor
@@ -0,0 +1,22 @@
+@using Microsoft.AspNetCore.Identity
+
+
+<ul class="nav nav-pills flex-column">
+    <li class="nav-item">
+        <NavLink class="nav-link" href="exam/create" Match="NavLinkMatch.All">创建</NavLink>
+    </li>
+    <li class="nav-item">
+        <NavLink class="nav-link" href="exam/manage">管理</NavLink>
+    </li>
+    <li class="nav-item">
+        <NavLink class="nav-link" href="Account/Manage/ChangePassword">Password</NavLink>
+    </li>
+@*     <li class="nav-item">
+        <NavLink class="nav-link" href="Account/Manage/TwoFactorAuthentication">Two-factor authentication</NavLink>
+    </li> *@
+</ul>
+
+@code {
+    private bool hasExternalLogins;
+
+}
diff --git a/TechHelper.Client/TechHelper.Client.csproj b/TechHelper.Client/TechHelper.Client.csproj
index d53e322..afddc5a 100644
--- a/TechHelper.Client/TechHelper.Client.csproj
+++ b/TechHelper.Client/TechHelper.Client.csproj
@@ -13,6 +13,14 @@
     <None Remove="Pages\Components\**" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Compile Remove="Pages\Editor\EditorMain.razor.cs" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Content Remove="Pages\Editor\EditorMain.razor" />
+  </ItemGroup>
+
   <ItemGroup>
     <PackageReference Include="Blazor.LocalStorage.WebAssembly" Version="8.0.0" />
     <PackageReference Include="Blazored.TextEditor" Version="1.1.3" />
diff --git a/TechHelper.Server/Context/AutoMapperProFile.cs b/TechHelper.Server/Context/AutoMapperProFile.cs
index e7100b1..0fe3b1f 100644
--- a/TechHelper.Server/Context/AutoMapperProFile.cs
+++ b/TechHelper.Server/Context/AutoMapperProFile.cs
@@ -1,4 +1,5 @@
 using AutoMapper;
+using AutoMapper.Internal.Mappers;
 using Entities.Contracts;
 using Entities.DTO;
 
@@ -6,6 +7,19 @@ namespace TechHelper.Context
 {
 	public class AutoMapperProFile : Profile
 	{
+
+		public static class EnumMappingHelpers
+		{
+			public static TEnum ParseEnumSafe<TEnum>(string sourceString, TEnum defaultValue) where TEnum : struct, Enum
+			{
+				if (Enum.TryParse(sourceString, true, out TEnum parsedValue))
+				{
+					return parsedValue;
+				}
+				return defaultValue;
+			}
+		}
+
 		public AutoMapperProFile()
 		{
 			CreateMap<UserForRegistrationDto, User>()
@@ -24,9 +38,9 @@ namespace TechHelper.Context
 				 .ForMember(dest => dest.Id, opt => opt.Ignore())
 				 .ForMember(dest => dest.QuestionText, opt => opt.MapFrom(src => src.Stem))
 				 .ForMember(dest => dest.CorrectAnswer, opt => opt.MapFrom(src => src.SampleAnswer))
-				 .ForMember(dest => dest.QuestionType, opt => opt.MapFrom(src => Enum.Parse<QuestionType>(src.QuestionType, true)))
-				 .ForMember(dest => dest.DifficultyLevel, opt => opt.MapFrom(src => Enum.Parse<DifficultyLevel>(src.DifficultyLevel, true)))
-				 .ForMember(dest => dest.SubjectArea, opt => opt.Ignore()) // SubjectArea 来自 Assignment 而不是 SubQuestionDto
+				 .ForMember(dest => dest.QuestionType, opt => opt.MapFrom(src => EnumMappingHelpers.ParseEnumSafe(src.QuestionType, QuestionType.Unknown)))
+				 .ForMember(dest => dest.DifficultyLevel, opt => opt.MapFrom(src => EnumMappingHelpers.ParseEnumSafe(src.DifficultyLevel, DifficultyLevel.easy)))
+				 .ForMember(dest => dest.SubjectArea, opt => opt.MapFrom(src => EnumMappingHelpers.ParseEnumSafe(src.DifficultyLevel, SubjectAreaEnum.Unknown)))
 				 .ForMember(dest => dest.CreatedBy, opt => opt.Ignore())
 				 .ForMember(dest => dest.CreatedAt, opt => opt.Ignore())
 				 .ForMember(dest => dest.UpdatedAt, opt => opt.Ignore())
@@ -40,6 +54,13 @@ namespace TechHelper.Context
 				.ForMember(dest => dest.QuestionType, opt => opt.MapFrom(src => src.QuestionType.ToString()))
 				.ForMember(dest => dest.DifficultyLevel, opt => opt.MapFrom(src => src.DifficultyLevel.ToString()))
 				.ForMember(dest => dest.Options, opt => opt.Ignore()); // Options 需要单独处理
+
+			CreateMap<Assignment, ExamDto>()
+				.ForMember(dest => dest.AssignmentTitle, opt => opt.MapFrom(src => src.Title))
+				.ForMember(dest => dest.Description, opt => opt.MapFrom(src => src.Description))
+				.ForMember(dest => dest.AssignmentId, opt => opt.MapFrom(src=> src.Id))
+				.ForMember(dest => dest.SubjectArea, opt => opt.MapFrom(src => src.SubjectArea.ToString()));
+
 		}
 	}
 	
diff --git a/TechHelper.Server/Context/Configuration/AssignmentGroupConfiguration.cs b/TechHelper.Server/Context/Configuration/AssignmentGroupConfiguration.cs
index 5593a54..1f526ef 100644
--- a/TechHelper.Server/Context/Configuration/AssignmentGroupConfiguration.cs
+++ b/TechHelper.Server/Context/Configuration/AssignmentGroupConfiguration.cs
@@ -25,8 +25,7 @@ namespace TechHelper.Context.Configuration
 
 			// 配置 AssignmentId 属性对应的数据库列名为 "assignment"，并设置为必需字段。
 			builder.Property(ag => ag.AssignmentId)
-				.HasColumnName("assignment")
-				.IsRequired();
+				.HasColumnName("assignment");
 
 			// 配置 Title 属性对应的数据库列名为 "title"，设置为必需字段，并设置最大长度。
 			builder.Property(ag => ag.Title)
@@ -52,7 +51,8 @@ namespace TechHelper.Context.Configuration
 			// 配置 ParentGroup 属性对应的数据库列名为 "sub_group"。
 			// ParentGroup 是 Guid? 类型，默认就是可选的，无需 IsRequired(false)。
 			builder.Property(ag => ag.ParentGroup)
-				.HasColumnName("sub_group");
+				.HasColumnName("parent_group")
+				.IsRequired(false);
 
 			// 配置 IsDeleted 属性对应的数据库列名为 "deleted"，并设置默认值为 false。
 			builder.Property(ag => ag.IsDeleted)
diff --git a/TechHelper.Server/Context/Configuration/AssignmentQuestionConfiguration.cs b/TechHelper.Server/Context/Configuration/AssignmentQuestionConfiguration.cs
index 4039959..cb5fe65 100644
--- a/TechHelper.Server/Context/Configuration/AssignmentQuestionConfiguration.cs
+++ b/TechHelper.Server/Context/Configuration/AssignmentQuestionConfiguration.cs
@@ -41,7 +41,7 @@ namespace TechHelper.Context.Configuration
 			// 配置 AssignmentGroupId 列
 			// 该列在数据库中名为 "detail_id"
 			builder.Property(aq => aq.AssignmentGroupId)
-				.HasColumnName("detail_id")
+				.HasColumnName("group_id")
 				.IsRequired();
 
 			// 配置 IsDeleted 列
diff --git a/TechHelper.Server/Controllers/ExamController.cs b/TechHelper.Server/Controllers/ExamController.cs
new file mode 100644
index 0000000..ae6fee4
--- /dev/null
+++ b/TechHelper.Server/Controllers/ExamController.cs
@@ -0,0 +1,74 @@
+using Entities.Contracts;
+using Entities.DTO;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using TechHelper.Server.Services;
+using System.Security.Claims;
+
+
+namespace TechHelper.Server.Controllers
+{
+	[Route("api/exam")]
+	[ApiController]
+	[Authorize]
+
+
+	public class ExamController : ControllerBase
+	{
+		private IExamService _examService;
+		private readonly UserManager<User> _userManager;
+
+		public ExamController(IExamService examService, UserManager<User> userManager)
+		{
+			_examService = examService;
+			_userManager = userManager;
+		}
+
+		[HttpPost("add")]
+		public async Task<IActionResult> AddExam(
+			[FromBody] ExamDto examDto)
+		{
+			var result = await _examService.AddAsync(examDto);
+			if (result.Status)
+			{
+				return Ok(result);
+			}
+			else
+			{
+				return BadRequest();
+			}
+		}
+
+		[HttpGet("get")]
+		public async Task<IActionResult> GetExamById(Guid id)
+		{
+
+			var result = await _examService.GetAsync(id);
+
+			return Ok(result);
+		}
+
+
+		[HttpGet("getAllPreview")]
+		public async Task<IActionResult> GetAllExamPreview(string user)
+		{
+			string? userId = User.Identity.Name;
+
+			var userid = await _userManager.FindByEmailAsync(user);
+			if (userid == null) return BadRequest("用户验证失败, 无效用户");
+
+
+
+			var result = await _examService.GetAllExamPreview(userid.Id);
+
+			if (result.Status)
+			{
+				return Ok(result.Result);
+			}
+			return BadRequest(result);
+		}
+
+	}
+}
diff --git a/TechHelper.Server/Migrations/20250528090233_init.Designer.cs b/TechHelper.Server/Migrations/20250610025325_init.Designer.cs
similarity index 97%
rename from TechHelper.Server/Migrations/20250528090233_init.Designer.cs
rename to TechHelper.Server/Migrations/20250610025325_init.Designer.cs
index 36c8df2..aed4a18 100644
--- a/TechHelper.Server/Migrations/20250528090233_init.Designer.cs
+++ b/TechHelper.Server/Migrations/20250610025325_init.Designer.cs
@@ -12,7 +12,7 @@ using TechHelper.Context;
 namespace TechHelper.Server.Migrations
 {
     [DbContext(typeof(ApplicationContext))]
-    [Migration("20250528090233_init")]
+    [Migration("20250610025325_init")]
     partial class init
     {
         /// <inheritdoc />
@@ -158,7 +158,8 @@ namespace TechHelper.Server.Migrations
                         .HasColumnType("char(36)")
                         .HasColumnName("id");
 
-                    b.Property<Guid>("AssignmentId")
+                    b.Property<Guid?>("AssignmentId")
+                        .IsRequired()
                         .HasColumnType("char(36)")
                         .HasColumnName("assignment");
 
@@ -180,7 +181,7 @@ namespace TechHelper.Server.Migrations
 
                     b.Property<Guid?>("ParentGroup")
                         .HasColumnType("char(36)")
-                        .HasColumnName("sub_group");
+                        .HasColumnName("parent_group");
 
                     b.Property<string>("Title")
                         .IsRequired()
@@ -188,10 +189,14 @@ namespace TechHelper.Server.Migrations
                         .HasColumnType("longtext")
                         .HasColumnName("title");
 
-                    b.Property<decimal?>("TotalPoints")
-                        .HasColumnType("decimal(65,30)")
+                    b.Property<float?>("TotalPoints")
+                        .HasColumnType("float")
                         .HasColumnName("total_points");
 
+                    b.Property<bool>("ValidQuestionGroup")
+                        .HasColumnType("tinyint(1)")
+                        .HasColumnName("valid_question_group");
+
                     b.HasKey("Id");
 
                     b.HasIndex("AssignmentId");
@@ -210,7 +215,7 @@ namespace TechHelper.Server.Migrations
 
                     b.Property<Guid>("AssignmentGroupId")
                         .HasColumnType("char(36)")
-                        .HasColumnName("detail_id");
+                        .HasColumnName("group_id");
 
                     b.Property<DateTime>("CreatedAt")
                         .HasColumnType("datetime(6)")
@@ -404,6 +409,10 @@ namespace TechHelper.Server.Migrations
                         .HasColumnType("datetime(6)")
                         .HasColumnName("updated_at");
 
+                    b.Property<bool>("ValidQuestion")
+                        .HasColumnType("tinyint(1)")
+                        .HasColumnName("valid_question");
+
                     b.HasKey("Id");
 
                     b.HasIndex("CreatedBy");
@@ -653,19 +662,19 @@ namespace TechHelper.Server.Migrations
                     b.HasData(
                         new
                         {
-                            Id = new Guid("ea0c88d8-1a52-4034-bb37-5a95043821eb"),
+                            Id = new Guid("9e526681-e57e-46b5-a01c-5731b27bfc4a"),
                             Name = "Student",
                             NormalizedName = "STUDENT"
                         },
                         new
                         {
-                            Id = new Guid("9de22e41-c096-4d5a-b55a-ce0122aa3ada"),
+                            Id = new Guid("dfdfb884-4063-4161-84e0-9c225f4e883c"),
                             Name = "Teacher",
                             NormalizedName = "TEACHER"
                         },
                         new
                         {
-                            Id = new Guid("dee718d9-b731-485f-96bb-a59ce777870f"),
+                            Id = new Guid("02a808ba-bd16-4f90-bf2b-0bc42f767e00"),
                             Name = "Administrator",
                             NormalizedName = "ADMINISTRATOR"
                         });
diff --git a/TechHelper.Server/Migrations/20250528090233_init.cs b/TechHelper.Server/Migrations/20250610025325_init.cs
similarity index 96%
rename from TechHelper.Server/Migrations/20250528090233_init.cs
rename to TechHelper.Server/Migrations/20250610025325_init.cs
index 7d76a35..09a6d42 100644
--- a/TechHelper.Server/Migrations/20250528090233_init.cs
+++ b/TechHelper.Server/Migrations/20250610025325_init.cs
@@ -281,7 +281,8 @@ namespace TechHelper.Server.Migrations
                     created_at = table.Column<DateTime>(type: "datetime(6)", nullable: false)
                         .Annotation("MySql:ValueGenerationStrategy", MySqlValueGenerationStrategy.IdentityColumn),
                     updated_at = table.Column<DateTime>(type: "datetime(6)", rowVersion: true, nullable: false),
-                    deleted = table.Column<bool>(type: "tinyint(1)", nullable: false, defaultValue: false)
+                    deleted = table.Column<bool>(type: "tinyint(1)", nullable: false, defaultValue: false),
+                    valid_question = table.Column<bool>(type: "tinyint(1)", nullable: false)
                 },
                 constraints: table =>
                 {
@@ -330,17 +331,18 @@ namespace TechHelper.Server.Migrations
                         .Annotation("MySql:CharSet", "utf8mb4"),
                     descript = table.Column<string>(type: "longtext", maxLength: 65535, nullable: false)
                         .Annotation("MySql:CharSet", "utf8mb4"),
-                    total_points = table.Column<decimal>(type: "decimal(65,30)", nullable: true),
+                    total_points = table.Column<float>(type: "float", nullable: true),
                     number = table.Column<byte>(type: "tinyint unsigned", nullable: false),
-                    sub_group = table.Column<Guid>(type: "char(36)", nullable: true, collation: "ascii_general_ci"),
-                    deleted = table.Column<bool>(type: "tinyint(1)", nullable: false, defaultValue: false)
+                    parent_group = table.Column<Guid>(type: "char(36)", nullable: true, collation: "ascii_general_ci"),
+                    deleted = table.Column<bool>(type: "tinyint(1)", nullable: false, defaultValue: false),
+                    valid_question_group = table.Column<bool>(type: "tinyint(1)", nullable: false)
                 },
                 constraints: table =>
                 {
                     table.PrimaryKey("PK_assignment_group", x => x.id);
                     table.ForeignKey(
-                        name: "FK_assignment_group_assignment_group_sub_group",
-                        column: x => x.sub_group,
+                        name: "FK_assignment_group_assignment_group_parent_group",
+                        column: x => x.parent_group,
                         principalTable: "assignment_group",
                         principalColumn: "id",
                         onDelete: ReferentialAction.SetNull);
@@ -482,18 +484,18 @@ namespace TechHelper.Server.Migrations
                 {
                     id = table.Column<Guid>(type: "char(36)", nullable: false, collation: "ascii_general_ci"),
                     question_id = table.Column<Guid>(type: "char(36)", nullable: false, collation: "ascii_general_ci"),
+                    group_id = table.Column<Guid>(type: "char(36)", nullable: false, collation: "ascii_general_ci"),
                     question_number = table.Column<byte>(type: "tinyint unsigned", nullable: false),
                     created_at = table.Column<DateTime>(type: "datetime(6)", nullable: false),
                     score = table.Column<float>(type: "float", nullable: true),
-                    detail_id = table.Column<Guid>(type: "char(36)", nullable: false, collation: "ascii_general_ci"),
                     deleted = table.Column<bool>(type: "tinyint(1)", nullable: false, defaultValue: false)
                 },
                 constraints: table =>
                 {
                     table.PrimaryKey("PK_assignment_questions", x => x.id);
                     table.ForeignKey(
-                        name: "FK_assignment_questions_assignment_group_detail_id",
-                        column: x => x.detail_id,
+                        name: "FK_assignment_questions_assignment_group_group_id",
+                        column: x => x.group_id,
                         principalTable: "assignment_group",
                         principalColumn: "id",
                         onDelete: ReferentialAction.Cascade);
@@ -554,9 +556,9 @@ namespace TechHelper.Server.Migrations
                 columns: new[] { "Id", "ConcurrencyStamp", "Name", "NormalizedName" },
                 values: new object[,]
                 {
-                    { new Guid("9de22e41-c096-4d5a-b55a-ce0122aa3ada"), null, "Teacher", "TEACHER" },
-                    { new Guid("dee718d9-b731-485f-96bb-a59ce777870f"), null, "Administrator", "ADMINISTRATOR" },
-                    { new Guid("ea0c88d8-1a52-4034-bb37-5a95043821eb"), null, "Student", "STUDENT" }
+                    { new Guid("02a808ba-bd16-4f90-bf2b-0bc42f767e00"), null, "Administrator", "ADMINISTRATOR" },
+                    { new Guid("9e526681-e57e-46b5-a01c-5731b27bfc4a"), null, "Student", "STUDENT" },
+                    { new Guid("dfdfb884-4063-4161-84e0-9c225f4e883c"), null, "Teacher", "TEACHER" }
                 });
 
             migrationBuilder.CreateIndex(
@@ -612,14 +614,14 @@ namespace TechHelper.Server.Migrations
                 column: "assignment");
 
             migrationBuilder.CreateIndex(
-                name: "IX_assignment_group_sub_group",
+                name: "IX_assignment_group_parent_group",
                 table: "assignment_group",
-                column: "sub_group");
+                column: "parent_group");
 
             migrationBuilder.CreateIndex(
-                name: "IX_assignment_questions_detail_id",
+                name: "IX_assignment_questions_group_id",
                 table: "assignment_questions",
-                column: "detail_id");
+                column: "group_id");
 
             migrationBuilder.CreateIndex(
                 name: "IX_assignment_questions_question_id",
diff --git a/TechHelper.Server/Migrations/20250610025810_assignment-not_required.Designer.cs b/TechHelper.Server/Migrations/20250610025810_assignment-not_required.Designer.cs
new file mode 100644
index 0000000..02af864
--- /dev/null
+++ b/TechHelper.Server/Migrations/20250610025810_assignment-not_required.Designer.cs
@@ -0,0 +1,1091 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using TechHelper.Context;
+
+#nullable disable
+
+namespace TechHelper.Server.Migrations
+{
+    [DbContext(typeof(ApplicationContext))]
+    [Migration("20250610025810_assignment-not_required")]
+    partial class assignmentnot_required
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "8.0.16")
+                .HasAnnotation("Relational:MaxIdentifierLength", 64);
+
+            MySqlModelBuilderExtensions.AutoIncrementColumns(modelBuilder);
+
+            modelBuilder.Entity("Entities.Contracts.Assignment", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("char(36)")
+                        .HasColumnName("id");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("datetime(6)")
+                        .HasColumnName("created_at");
+
+                    b.Property<Guid>("CreatedBy")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("created_by");
+
+                    b.Property<string>("Description")
+                        .IsRequired()
+                        .HasColumnType("longtext")
+                        .HasColumnName("description");
+
+                    b.Property<DateTime>("DueDate")
+                        .HasColumnType("datetime(6)")
+                        .HasColumnName("due_date");
+
+                    b.Property<bool>("IsDeleted")
+                        .HasColumnType("tinyint(1)")
+                        .HasColumnName("deleted");
+
+                    b.Property<string>("SubjectArea")
+                        .IsRequired()
+                        .HasColumnType("longtext")
+                        .HasColumnName("subject_area");
+
+                    b.Property<string>("Title")
+                        .IsRequired()
+                        .HasMaxLength(255)
+                        .HasColumnType("varchar(255)")
+                        .HasColumnName("title");
+
+                    b.Property<float?>("TotalPoints")
+                        .HasColumnType("float")
+                        .HasColumnName("total_points");
+
+                    b.Property<DateTime>("UpdatedAt")
+                        .HasColumnType("datetime(6)")
+                        .HasColumnName("updated_at");
+
+                    b.Property<Guid?>("UserId")
+                        .HasColumnType("char(36)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CreatedBy");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("assignments", (string)null);
+                });
+
+            modelBuilder.Entity("Entities.Contracts.AssignmentAttachment", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("char(36)")
+                        .HasColumnName("id");
+
+                    b.Property<Guid>("AssignmentId")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("assignment_id");
+
+                    b.Property<string>("FileName")
+                        .IsRequired()
+                        .HasMaxLength(255)
+                        .HasColumnType("varchar(255)")
+                        .HasColumnName("file_name");
+
+                    b.Property<string>("FilePath")
+                        .IsRequired()
+                        .HasMaxLength(255)
+                        .HasColumnType("varchar(255)")
+                        .HasColumnName("file_path");
+
+                    b.Property<bool>("IsDeleted")
+                        .HasColumnType("tinyint(1)")
+                        .HasColumnName("deleted");
+
+                    b.Property<DateTime>("UploadedAt")
+                        .HasColumnType("datetime(6)")
+                        .HasColumnName("uploaded_at");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("AssignmentId");
+
+                    b.ToTable("assignment_attachments");
+                });
+
+            modelBuilder.Entity("Entities.Contracts.AssignmentClass", b =>
+                {
+                    b.Property<Guid>("AssignmentId")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("assignment_id")
+                        .HasColumnOrder(0);
+
+                    b.Property<Guid>("ClassId")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("class_id")
+                        .HasColumnOrder(1);
+
+                    b.Property<DateTime>("AssignedAt")
+                        .HasColumnType("datetime(6)")
+                        .HasColumnName("assigned_at");
+
+                    b.Property<bool>("IsDeleted")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("tinyint(1)")
+                        .HasDefaultValue(false)
+                        .HasColumnName("deleted");
+
+                    b.HasKey("AssignmentId", "ClassId");
+
+                    b.HasIndex("ClassId");
+
+                    b.ToTable("assignment_class", (string)null);
+                });
+
+            modelBuilder.Entity("Entities.Contracts.AssignmentGroup", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("char(36)")
+                        .HasColumnName("id");
+
+                    b.Property<Guid?>("AssignmentId")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("assignment");
+
+                    b.Property<string>("Descript")
+                        .IsRequired()
+                        .HasMaxLength(65535)
+                        .HasColumnType("longtext")
+                        .HasColumnName("descript");
+
+                    b.Property<bool>("IsDeleted")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("tinyint(1)")
+                        .HasDefaultValue(false)
+                        .HasColumnName("deleted");
+
+                    b.Property<byte>("Number")
+                        .HasColumnType("tinyint unsigned")
+                        .HasColumnName("number");
+
+                    b.Property<Guid?>("ParentGroup")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("parent_group");
+
+                    b.Property<string>("Title")
+                        .IsRequired()
+                        .HasMaxLength(65535)
+                        .HasColumnType("longtext")
+                        .HasColumnName("title");
+
+                    b.Property<float?>("TotalPoints")
+                        .HasColumnType("float")
+                        .HasColumnName("total_points");
+
+                    b.Property<bool>("ValidQuestionGroup")
+                        .HasColumnType("tinyint(1)")
+                        .HasColumnName("valid_question_group");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("AssignmentId");
+
+                    b.HasIndex("ParentGroup");
+
+                    b.ToTable("assignment_group", (string)null);
+                });
+
+            modelBuilder.Entity("Entities.Contracts.AssignmentQuestion", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("char(36)")
+                        .HasColumnName("id");
+
+                    b.Property<Guid>("AssignmentGroupId")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("group_id");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("datetime(6)")
+                        .HasColumnName("created_at");
+
+                    b.Property<bool>("IsDeleted")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("tinyint(1)")
+                        .HasDefaultValue(false)
+                        .HasColumnName("deleted");
+
+                    b.Property<Guid>("QuestionId")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("question_id");
+
+                    b.Property<byte>("QuestionNumber")
+                        .HasColumnType("tinyint unsigned")
+                        .HasColumnName("question_number");
+
+                    b.Property<float?>("Score")
+                        .HasColumnType("float")
+                        .HasColumnName("score");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("AssignmentGroupId");
+
+                    b.HasIndex("QuestionId");
+
+                    b.ToTable("assignment_questions", (string)null);
+                });
+
+            modelBuilder.Entity("Entities.Contracts.Class", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("char(36)")
+                        .HasColumnName("id");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("datetime(6)")
+                        .HasColumnName("created_at");
+
+                    MySqlPropertyBuilderExtensions.UseMySqlIdentityColumn(b.Property<DateTime>("CreatedAt"));
+
+                    b.Property<string>("Description")
+                        .HasColumnType("longtext")
+                        .HasColumnName("description");
+
+                    b.Property<byte>("Grade")
+                        .HasColumnType("tinyint unsigned")
+                        .HasColumnName("grade");
+
+                    b.Property<Guid?>("HeadTeacherId")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("head_teacher_id");
+
+                    b.Property<bool>("IsDeleted")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("tinyint(1)")
+                        .HasDefaultValue(false)
+                        .HasColumnName("deleted");
+
+                    b.Property<byte>("Number")
+                        .HasColumnType("tinyint unsigned")
+                        .HasColumnName("class");
+
+                    b.Property<DateTime>("UpdatedAt")
+                        .ValueGeneratedOnAddOrUpdate()
+                        .HasColumnType("datetime(6)")
+                        .HasColumnName("updated_at");
+
+                    MySqlPropertyBuilderExtensions.UseMySqlComputedColumn(b.Property<DateTime>("UpdatedAt"));
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("HeadTeacherId");
+
+                    b.ToTable("classes", (string)null);
+                });
+
+            modelBuilder.Entity("Entities.Contracts.ClassStudent", b =>
+                {
+                    b.Property<Guid>("ClassId")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("class_id")
+                        .HasColumnOrder(0);
+
+                    b.Property<Guid>("StudentId")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("student_id")
+                        .HasColumnOrder(1);
+
+                    b.Property<DateTime>("EnrollmentDate")
+                        .HasColumnType("datetime(6)")
+                        .HasColumnName("enrollment_date");
+
+                    b.Property<bool>("IsDeleted")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("tinyint(1)")
+                        .HasDefaultValue(false)
+                        .HasColumnName("deleted");
+
+                    b.HasKey("ClassId", "StudentId");
+
+                    b.HasIndex("StudentId");
+
+                    b.ToTable("class_student", (string)null);
+                });
+
+            modelBuilder.Entity("Entities.Contracts.ClassTeacher", b =>
+                {
+                    b.Property<Guid>("ClassId")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("class_id");
+
+                    b.Property<Guid>("TeacherId")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("teacher_id");
+
+                    b.Property<string>("SubjectTaught")
+                        .IsRequired()
+                        .HasColumnType("longtext")
+                        .HasColumnName("subject_taught");
+
+                    b.HasKey("ClassId", "TeacherId");
+
+                    b.HasIndex("TeacherId");
+
+                    b.ToTable("class_teachers", (string)null);
+                });
+
+            modelBuilder.Entity("Entities.Contracts.Question", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("char(36)")
+                        .HasColumnName("id");
+
+                    b.Property<string>("CorrectAnswer")
+                        .IsRequired()
+                        .HasMaxLength(65535)
+                        .HasColumnType("longtext")
+                        .HasColumnName("correct_answer");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("datetime(6)")
+                        .HasColumnName("created_at");
+
+                    MySqlPropertyBuilderExtensions.UseMySqlIdentityColumn(b.Property<DateTime>("CreatedAt"));
+
+                    b.Property<Guid>("CreatedBy")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("created_by");
+
+                    b.Property<string>("DifficultyLevel")
+                        .IsRequired()
+                        .HasMaxLength(10)
+                        .HasColumnType("varchar(10)")
+                        .HasColumnName("difficulty_level");
+
+                    b.Property<bool>("IsDeleted")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("tinyint(1)")
+                        .HasDefaultValue(false)
+                        .HasColumnName("deleted");
+
+                    b.Property<string>("QuestionText")
+                        .IsRequired()
+                        .HasMaxLength(65535)
+                        .HasColumnType("longtext")
+                        .HasColumnName("question_text");
+
+                    b.Property<string>("QuestionType")
+                        .IsRequired()
+                        .HasMaxLength(20)
+                        .HasColumnType("varchar(20)")
+                        .HasColumnName("question_type");
+
+                    b.Property<string>("SubjectArea")
+                        .IsRequired()
+                        .HasMaxLength(100)
+                        .HasColumnType("varchar(100)")
+                        .HasColumnName("subject_area");
+
+                    b.Property<DateTime>("UpdatedAt")
+                        .IsConcurrencyToken()
+                        .ValueGeneratedOnAddOrUpdate()
+                        .HasColumnType("datetime(6)")
+                        .HasColumnName("updated_at");
+
+                    b.Property<bool>("ValidQuestion")
+                        .HasColumnType("tinyint(1)")
+                        .HasColumnName("valid_question");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CreatedBy");
+
+                    b.ToTable("questions", (string)null);
+                });
+
+            modelBuilder.Entity("Entities.Contracts.Submission", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("char(36)")
+                        .HasColumnName("id");
+
+                    b.Property<Guid>("AssignmentId")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("assignment_id");
+
+                    b.Property<Guid>("AttemptNumber")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("attempt_number");
+
+                    b.Property<DateTime?>("GradedAt")
+                        .HasColumnType("datetime(6)")
+                        .HasColumnName("graded_at");
+
+                    b.Property<Guid?>("GradedBy")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("graded_by");
+
+                    b.Property<bool>("IsDeleted")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("tinyint(1)")
+                        .HasDefaultValue(false)
+                        .HasColumnName("deleted");
+
+                    b.Property<string>("OverallFeedback")
+                        .IsRequired()
+                        .HasColumnType("longtext")
+                        .HasColumnName("overall_feedback");
+
+                    b.Property<float?>("OverallGrade")
+                        .HasPrecision(5, 2)
+                        .HasColumnType("float")
+                        .HasColumnName("overall_grade");
+
+                    b.Property<string>("Status")
+                        .IsRequired()
+                        .HasMaxLength(15)
+                        .HasColumnType("varchar(15)")
+                        .HasColumnName("status");
+
+                    b.Property<Guid>("StudentId")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("student_id");
+
+                    b.Property<DateTime>("SubmissionTime")
+                        .HasColumnType("datetime(6)")
+                        .HasColumnName("submission_time");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("AssignmentId");
+
+                    b.HasIndex("GradedBy");
+
+                    b.HasIndex("StudentId");
+
+                    b.ToTable("submissions", (string)null);
+                });
+
+            modelBuilder.Entity("Entities.Contracts.SubmissionDetail", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("char(36)")
+                        .HasColumnName("id");
+
+                    b.Property<Guid>("AssignmentQuestionId")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("assignment_question_id");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("datetime(6)")
+                        .HasColumnName("created_at");
+
+                    MySqlPropertyBuilderExtensions.UseMySqlIdentityColumn(b.Property<DateTime>("CreatedAt"));
+
+                    b.Property<bool?>("IsCorrect")
+                        .HasColumnType("tinyint(1)")
+                        .HasColumnName("is_correct");
+
+                    b.Property<bool>("IsDeleted")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("tinyint(1)")
+                        .HasDefaultValue(false)
+                        .HasColumnName("deleted");
+
+                    b.Property<float?>("PointsAwarded")
+                        .HasPrecision(5, 2)
+                        .HasColumnType("float")
+                        .HasColumnName("points_awarded");
+
+                    b.Property<string>("StudentAnswer")
+                        .IsRequired()
+                        .HasColumnType("longtext")
+                        .HasColumnName("student_answer");
+
+                    b.Property<Guid>("StudentId")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("student_id");
+
+                    b.Property<Guid>("SubmissionId")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("submission_id");
+
+                    b.Property<string>("TeacherFeedback")
+                        .IsRequired()
+                        .HasColumnType("longtext")
+                        .HasColumnName("teacher_feedback");
+
+                    b.Property<DateTime>("UpdatedAt")
+                        .IsConcurrencyToken()
+                        .ValueGeneratedOnAddOrUpdate()
+                        .HasColumnType("datetime(6)")
+                        .HasColumnName("updated_at");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("AssignmentQuestionId");
+
+                    b.HasIndex("StudentId");
+
+                    b.HasIndex("SubmissionId");
+
+                    b.ToTable("submission_details", (string)null);
+                });
+
+            modelBuilder.Entity("Entities.Contracts.User", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("char(36)");
+
+                    b.Property<int>("AccessFailedCount")
+                        .HasColumnType("int");
+
+                    b.Property<string>("Address")
+                        .HasColumnType("longtext");
+
+                    b.Property<string>("ConcurrencyStamp")
+                        .IsConcurrencyToken()
+                        .HasColumnType("longtext");
+
+                    b.Property<string>("DisplayName")
+                        .HasColumnType("longtext");
+
+                    b.Property<string>("Email")
+                        .HasMaxLength(256)
+                        .HasColumnType("varchar(256)");
+
+                    b.Property<bool>("EmailConfirmed")
+                        .HasColumnType("tinyint(1)");
+
+                    b.Property<bool>("IsDeleted")
+                        .HasColumnType("tinyint(1)")
+                        .HasColumnName("deleted");
+
+                    b.Property<bool>("LockoutEnabled")
+                        .HasColumnType("tinyint(1)");
+
+                    b.Property<DateTimeOffset?>("LockoutEnd")
+                        .HasColumnType("datetime(6)");
+
+                    b.Property<string>("NormalizedEmail")
+                        .HasMaxLength(256)
+                        .HasColumnType("varchar(256)");
+
+                    b.Property<string>("NormalizedUserName")
+                        .HasMaxLength(256)
+                        .HasColumnType("varchar(256)");
+
+                    b.Property<string>("PasswordHash")
+                        .HasColumnType("longtext");
+
+                    b.Property<string>("PhoneNumber")
+                        .HasColumnType("longtext");
+
+                    b.Property<bool>("PhoneNumberConfirmed")
+                        .HasColumnType("tinyint(1)");
+
+                    b.Property<string>("RefreshToken")
+                        .HasColumnType("longtext");
+
+                    b.Property<DateTime?>("RefreshTokenExpiryTime")
+                        .HasColumnType("datetime(6)");
+
+                    b.Property<string>("SecurityStamp")
+                        .HasColumnType("longtext");
+
+                    b.Property<bool>("TwoFactorEnabled")
+                        .HasColumnType("tinyint(1)");
+
+                    b.Property<string>("UserName")
+                        .HasMaxLength(256)
+                        .HasColumnType("varchar(256)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("NormalizedEmail")
+                        .HasDatabaseName("EmailIndex");
+
+                    b.HasIndex("NormalizedUserName")
+                        .IsUnique()
+                        .HasDatabaseName("UserNameIndex");
+
+                    b.ToTable("AspNetUsers", (string)null);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRole<System.Guid>", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("char(36)");
+
+                    b.Property<string>("ConcurrencyStamp")
+                        .IsConcurrencyToken()
+                        .HasColumnType("longtext");
+
+                    b.Property<string>("Name")
+                        .HasMaxLength(256)
+                        .HasColumnType("varchar(256)");
+
+                    b.Property<string>("NormalizedName")
+                        .HasMaxLength(256)
+                        .HasColumnType("varchar(256)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("NormalizedName")
+                        .IsUnique()
+                        .HasDatabaseName("RoleNameIndex");
+
+                    b.ToTable("AspNetRoles", (string)null);
+
+                    b.HasData(
+                        new
+                        {
+                            Id = new Guid("d4b41bc3-612e-49dd-aeda-6a98ea0e4e68"),
+                            Name = "Student",
+                            NormalizedName = "STUDENT"
+                        },
+                        new
+                        {
+                            Id = new Guid("b2e087e6-ea32-46c4-aeb3-09b936cd0cf4"),
+                            Name = "Teacher",
+                            NormalizedName = "TEACHER"
+                        },
+                        new
+                        {
+                            Id = new Guid("ba33e047-8354-4f2c-b8b1-1f46441c28fc"),
+                            Name = "Administrator",
+                            NormalizedName = "ADMINISTRATOR"
+                        });
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRoleClaim<System.Guid>", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    MySqlPropertyBuilderExtensions.UseMySqlIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ClaimType")
+                        .HasColumnType("longtext");
+
+                    b.Property<string>("ClaimValue")
+                        .HasColumnType("longtext");
+
+                    b.Property<Guid>("RoleId")
+                        .HasColumnType("char(36)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("RoleId");
+
+                    b.ToTable("AspNetRoleClaims", (string)null);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserClaim<System.Guid>", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    MySqlPropertyBuilderExtensions.UseMySqlIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ClaimType")
+                        .HasColumnType("longtext");
+
+                    b.Property<string>("ClaimValue")
+                        .HasColumnType("longtext");
+
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("char(36)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("AspNetUserClaims", (string)null);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserLogin<System.Guid>", b =>
+                {
+                    b.Property<string>("LoginProvider")
+                        .HasColumnType("varchar(255)");
+
+                    b.Property<string>("ProviderKey")
+                        .HasColumnType("varchar(255)");
+
+                    b.Property<string>("ProviderDisplayName")
+                        .HasColumnType("longtext");
+
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("char(36)");
+
+                    b.HasKey("LoginProvider", "ProviderKey");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("AspNetUserLogins", (string)null);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserRole<System.Guid>", b =>
+                {
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("char(36)");
+
+                    b.Property<Guid>("RoleId")
+                        .HasColumnType("char(36)");
+
+                    b.HasKey("UserId", "RoleId");
+
+                    b.HasIndex("RoleId");
+
+                    b.ToTable("AspNetUserRoles", (string)null);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserToken<System.Guid>", b =>
+                {
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("char(36)");
+
+                    b.Property<string>("LoginProvider")
+                        .HasColumnType("varchar(255)");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("varchar(255)");
+
+                    b.Property<string>("Value")
+                        .HasColumnType("longtext");
+
+                    b.HasKey("UserId", "LoginProvider", "Name");
+
+                    b.ToTable("AspNetUserTokens", (string)null);
+                });
+
+            modelBuilder.Entity("Entities.Contracts.Assignment", b =>
+                {
+                    b.HasOne("Entities.Contracts.User", "Creator")
+                        .WithMany()
+                        .HasForeignKey("CreatedBy")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Entities.Contracts.User", null)
+                        .WithMany("CreatedAssignments")
+                        .HasForeignKey("UserId");
+
+                    b.Navigation("Creator");
+                });
+
+            modelBuilder.Entity("Entities.Contracts.AssignmentAttachment", b =>
+                {
+                    b.HasOne("Entities.Contracts.Assignment", "Assignment")
+                        .WithMany("AssignmentAttachments")
+                        .HasForeignKey("AssignmentId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Assignment");
+                });
+
+            modelBuilder.Entity("Entities.Contracts.AssignmentClass", b =>
+                {
+                    b.HasOne("Entities.Contracts.Assignment", "Assignment")
+                        .WithMany("AssignmentClasses")
+                        .HasForeignKey("AssignmentId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Entities.Contracts.Class", "Class")
+                        .WithMany("AssignmentClasses")
+                        .HasForeignKey("ClassId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Assignment");
+
+                    b.Navigation("Class");
+                });
+
+            modelBuilder.Entity("Entities.Contracts.AssignmentGroup", b =>
+                {
+                    b.HasOne("Entities.Contracts.Assignment", "Assignment")
+                        .WithMany("AssignmentGroups")
+                        .HasForeignKey("AssignmentId")
+                        .OnDelete(DeleteBehavior.Cascade);
+
+                    b.HasOne("Entities.Contracts.AssignmentGroup", "ParentAssignmentGroup")
+                        .WithMany("ChildAssignmentGroups")
+                        .HasForeignKey("ParentGroup")
+                        .OnDelete(DeleteBehavior.SetNull);
+
+                    b.Navigation("Assignment");
+
+                    b.Navigation("ParentAssignmentGroup");
+                });
+
+            modelBuilder.Entity("Entities.Contracts.AssignmentQuestion", b =>
+                {
+                    b.HasOne("Entities.Contracts.AssignmentGroup", "AssignmentGroup")
+                        .WithMany("AssignmentQuestions")
+                        .HasForeignKey("AssignmentGroupId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Entities.Contracts.Question", "Question")
+                        .WithMany("AssignmentQuestions")
+                        .HasForeignKey("QuestionId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("AssignmentGroup");
+
+                    b.Navigation("Question");
+                });
+
+            modelBuilder.Entity("Entities.Contracts.Class", b =>
+                {
+                    b.HasOne("Entities.Contracts.User", "HeadTeacher")
+                        .WithMany()
+                        .HasForeignKey("HeadTeacherId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.Navigation("HeadTeacher");
+                });
+
+            modelBuilder.Entity("Entities.Contracts.ClassStudent", b =>
+                {
+                    b.HasOne("Entities.Contracts.Class", "Class")
+                        .WithMany("ClassStudents")
+                        .HasForeignKey("ClassId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Entities.Contracts.User", "Student")
+                        .WithMany("EnrolledClassesLink")
+                        .HasForeignKey("StudentId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.Navigation("Class");
+
+                    b.Navigation("Student");
+                });
+
+            modelBuilder.Entity("Entities.Contracts.ClassTeacher", b =>
+                {
+                    b.HasOne("Entities.Contracts.Class", "Class")
+                        .WithMany("ClassTeachers")
+                        .HasForeignKey("ClassId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Entities.Contracts.User", "Teacher")
+                        .WithMany("TaughtClassesLink")
+                        .HasForeignKey("TeacherId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.Navigation("Class");
+
+                    b.Navigation("Teacher");
+                });
+
+            modelBuilder.Entity("Entities.Contracts.Question", b =>
+                {
+                    b.HasOne("Entities.Contracts.User", "Creator")
+                        .WithMany("CreatedQuestions")
+                        .HasForeignKey("CreatedBy")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.Navigation("Creator");
+                });
+
+            modelBuilder.Entity("Entities.Contracts.Submission", b =>
+                {
+                    b.HasOne("Entities.Contracts.Assignment", "Assignment")
+                        .WithMany("Submissions")
+                        .HasForeignKey("AssignmentId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Entities.Contracts.User", "Grader")
+                        .WithMany("GradedSubmissions")
+                        .HasForeignKey("GradedBy")
+                        .OnDelete(DeleteBehavior.SetNull);
+
+                    b.HasOne("Entities.Contracts.User", "Student")
+                        .WithMany("SubmissionsAsStudent")
+                        .HasForeignKey("StudentId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.Navigation("Assignment");
+
+                    b.Navigation("Grader");
+
+                    b.Navigation("Student");
+                });
+
+            modelBuilder.Entity("Entities.Contracts.SubmissionDetail", b =>
+                {
+                    b.HasOne("Entities.Contracts.AssignmentQuestion", "AssignmentQuestion")
+                        .WithMany("SubmissionDetails")
+                        .HasForeignKey("AssignmentQuestionId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Entities.Contracts.User", "User")
+                        .WithMany("SubmissionDetails")
+                        .HasForeignKey("StudentId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.HasOne("Entities.Contracts.Submission", "Submission")
+                        .WithMany("SubmissionDetails")
+                        .HasForeignKey("SubmissionId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("AssignmentQuestion");
+
+                    b.Navigation("Submission");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRoleClaim<System.Guid>", b =>
+                {
+                    b.HasOne("Microsoft.AspNetCore.Identity.IdentityRole<System.Guid>", null)
+                        .WithMany()
+                        .HasForeignKey("RoleId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserClaim<System.Guid>", b =>
+                {
+                    b.HasOne("Entities.Contracts.User", null)
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserLogin<System.Guid>", b =>
+                {
+                    b.HasOne("Entities.Contracts.User", null)
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserRole<System.Guid>", b =>
+                {
+                    b.HasOne("Microsoft.AspNetCore.Identity.IdentityRole<System.Guid>", null)
+                        .WithMany()
+                        .HasForeignKey("RoleId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Entities.Contracts.User", null)
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserToken<System.Guid>", b =>
+                {
+                    b.HasOne("Entities.Contracts.User", null)
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Entities.Contracts.Assignment", b =>
+                {
+                    b.Navigation("AssignmentAttachments");
+
+                    b.Navigation("AssignmentClasses");
+
+                    b.Navigation("AssignmentGroups");
+
+                    b.Navigation("Submissions");
+                });
+
+            modelBuilder.Entity("Entities.Contracts.AssignmentGroup", b =>
+                {
+                    b.Navigation("AssignmentQuestions");
+
+                    b.Navigation("ChildAssignmentGroups");
+                });
+
+            modelBuilder.Entity("Entities.Contracts.AssignmentQuestion", b =>
+                {
+                    b.Navigation("SubmissionDetails");
+                });
+
+            modelBuilder.Entity("Entities.Contracts.Class", b =>
+                {
+                    b.Navigation("AssignmentClasses");
+
+                    b.Navigation("ClassStudents");
+
+                    b.Navigation("ClassTeachers");
+                });
+
+            modelBuilder.Entity("Entities.Contracts.Question", b =>
+                {
+                    b.Navigation("AssignmentQuestions");
+                });
+
+            modelBuilder.Entity("Entities.Contracts.Submission", b =>
+                {
+                    b.Navigation("SubmissionDetails");
+                });
+
+            modelBuilder.Entity("Entities.Contracts.User", b =>
+                {
+                    b.Navigation("CreatedAssignments");
+
+                    b.Navigation("CreatedQuestions");
+
+                    b.Navigation("EnrolledClassesLink");
+
+                    b.Navigation("GradedSubmissions");
+
+                    b.Navigation("SubmissionDetails");
+
+                    b.Navigation("SubmissionsAsStudent");
+
+                    b.Navigation("TaughtClassesLink");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
diff --git a/TechHelper.Server/Migrations/20250610025810_assignment-not_required.cs b/TechHelper.Server/Migrations/20250610025810_assignment-not_required.cs
new file mode 100644
index 0000000..82726eb
--- /dev/null
+++ b/TechHelper.Server/Migrations/20250610025810_assignment-not_required.cs
@@ -0,0 +1,93 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+#pragma warning disable CA1814 // Prefer jagged arrays over multidimensional
+
+namespace TechHelper.Server.Migrations
+{
+    /// <inheritdoc />
+    public partial class assignmentnot_required : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DeleteData(
+                table: "AspNetRoles",
+                keyColumn: "Id",
+                keyValue: new Guid("02a808ba-bd16-4f90-bf2b-0bc42f767e00"));
+
+            migrationBuilder.DeleteData(
+                table: "AspNetRoles",
+                keyColumn: "Id",
+                keyValue: new Guid("9e526681-e57e-46b5-a01c-5731b27bfc4a"));
+
+            migrationBuilder.DeleteData(
+                table: "AspNetRoles",
+                keyColumn: "Id",
+                keyValue: new Guid("dfdfb884-4063-4161-84e0-9c225f4e883c"));
+
+            migrationBuilder.AlterColumn<Guid>(
+                name: "assignment",
+                table: "assignment_group",
+                type: "char(36)",
+                nullable: true,
+                collation: "ascii_general_ci",
+                oldClrType: typeof(Guid),
+                oldType: "char(36)")
+                .OldAnnotation("Relational:Collation", "ascii_general_ci");
+
+            migrationBuilder.InsertData(
+                table: "AspNetRoles",
+                columns: new[] { "Id", "ConcurrencyStamp", "Name", "NormalizedName" },
+                values: new object[,]
+                {
+                    { new Guid("b2e087e6-ea32-46c4-aeb3-09b936cd0cf4"), null, "Teacher", "TEACHER" },
+                    { new Guid("ba33e047-8354-4f2c-b8b1-1f46441c28fc"), null, "Administrator", "ADMINISTRATOR" },
+                    { new Guid("d4b41bc3-612e-49dd-aeda-6a98ea0e4e68"), null, "Student", "STUDENT" }
+                });
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DeleteData(
+                table: "AspNetRoles",
+                keyColumn: "Id",
+                keyValue: new Guid("b2e087e6-ea32-46c4-aeb3-09b936cd0cf4"));
+
+            migrationBuilder.DeleteData(
+                table: "AspNetRoles",
+                keyColumn: "Id",
+                keyValue: new Guid("ba33e047-8354-4f2c-b8b1-1f46441c28fc"));
+
+            migrationBuilder.DeleteData(
+                table: "AspNetRoles",
+                keyColumn: "Id",
+                keyValue: new Guid("d4b41bc3-612e-49dd-aeda-6a98ea0e4e68"));
+
+            migrationBuilder.AlterColumn<Guid>(
+                name: "assignment",
+                table: "assignment_group",
+                type: "char(36)",
+                nullable: false,
+                defaultValue: new Guid("00000000-0000-0000-0000-000000000000"),
+                collation: "ascii_general_ci",
+                oldClrType: typeof(Guid),
+                oldType: "char(36)",
+                oldNullable: true)
+                .OldAnnotation("Relational:Collation", "ascii_general_ci");
+
+            migrationBuilder.InsertData(
+                table: "AspNetRoles",
+                columns: new[] { "Id", "ConcurrencyStamp", "Name", "NormalizedName" },
+                values: new object[,]
+                {
+                    { new Guid("02a808ba-bd16-4f90-bf2b-0bc42f767e00"), null, "Administrator", "ADMINISTRATOR" },
+                    { new Guid("9e526681-e57e-46b5-a01c-5731b27bfc4a"), null, "Student", "STUDENT" },
+                    { new Guid("dfdfb884-4063-4161-84e0-9c225f4e883c"), null, "Teacher", "TEACHER" }
+                });
+        }
+    }
+}
diff --git a/TechHelper.Server/Migrations/ApplicationContextModelSnapshot.cs b/TechHelper.Server/Migrations/ApplicationContextModelSnapshot.cs
index 894bac7..260e7ce 100644
--- a/TechHelper.Server/Migrations/ApplicationContextModelSnapshot.cs
+++ b/TechHelper.Server/Migrations/ApplicationContextModelSnapshot.cs
@@ -155,7 +155,7 @@ namespace TechHelper.Server.Migrations
                         .HasColumnType("char(36)")
                         .HasColumnName("id");
 
-                    b.Property<Guid>("AssignmentId")
+                    b.Property<Guid?>("AssignmentId")
                         .HasColumnType("char(36)")
                         .HasColumnName("assignment");
 
@@ -177,7 +177,7 @@ namespace TechHelper.Server.Migrations
 
                     b.Property<Guid?>("ParentGroup")
                         .HasColumnType("char(36)")
-                        .HasColumnName("sub_group");
+                        .HasColumnName("parent_group");
 
                     b.Property<string>("Title")
                         .IsRequired()
@@ -185,10 +185,14 @@ namespace TechHelper.Server.Migrations
                         .HasColumnType("longtext")
                         .HasColumnName("title");
 
-                    b.Property<decimal?>("TotalPoints")
-                        .HasColumnType("decimal(65,30)")
+                    b.Property<float?>("TotalPoints")
+                        .HasColumnType("float")
                         .HasColumnName("total_points");
 
+                    b.Property<bool>("ValidQuestionGroup")
+                        .HasColumnType("tinyint(1)")
+                        .HasColumnName("valid_question_group");
+
                     b.HasKey("Id");
 
                     b.HasIndex("AssignmentId");
@@ -207,7 +211,7 @@ namespace TechHelper.Server.Migrations
 
                     b.Property<Guid>("AssignmentGroupId")
                         .HasColumnType("char(36)")
-                        .HasColumnName("detail_id");
+                        .HasColumnName("group_id");
 
                     b.Property<DateTime>("CreatedAt")
                         .HasColumnType("datetime(6)")
@@ -401,6 +405,10 @@ namespace TechHelper.Server.Migrations
                         .HasColumnType("datetime(6)")
                         .HasColumnName("updated_at");
 
+                    b.Property<bool>("ValidQuestion")
+                        .HasColumnType("tinyint(1)")
+                        .HasColumnName("valid_question");
+
                     b.HasKey("Id");
 
                     b.HasIndex("CreatedBy");
@@ -650,19 +658,19 @@ namespace TechHelper.Server.Migrations
                     b.HasData(
                         new
                         {
-                            Id = new Guid("ea0c88d8-1a52-4034-bb37-5a95043821eb"),
+                            Id = new Guid("d4b41bc3-612e-49dd-aeda-6a98ea0e4e68"),
                             Name = "Student",
                             NormalizedName = "STUDENT"
                         },
                         new
                         {
-                            Id = new Guid("9de22e41-c096-4d5a-b55a-ce0122aa3ada"),
+                            Id = new Guid("b2e087e6-ea32-46c4-aeb3-09b936cd0cf4"),
                             Name = "Teacher",
                             NormalizedName = "TEACHER"
                         },
                         new
                         {
-                            Id = new Guid("dee718d9-b731-485f-96bb-a59ce777870f"),
+                            Id = new Guid("ba33e047-8354-4f2c-b8b1-1f46441c28fc"),
                             Name = "Administrator",
                             NormalizedName = "ADMINISTRATOR"
                         });
@@ -821,8 +829,7 @@ namespace TechHelper.Server.Migrations
                     b.HasOne("Entities.Contracts.Assignment", "Assignment")
                         .WithMany("AssignmentGroups")
                         .HasForeignKey("AssignmentId")
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
+                        .OnDelete(DeleteBehavior.Cascade);
 
                     b.HasOne("Entities.Contracts.AssignmentGroup", "ParentAssignmentGroup")
                         .WithMany("ChildAssignmentGroups")
diff --git a/TechHelper.Server/Program.cs b/TechHelper.Server/Program.cs
index a3543a9..2588e43 100644
--- a/TechHelper.Server/Program.cs
+++ b/TechHelper.Server/Program.cs
@@ -10,6 +10,7 @@ using Microsoft.IdentityModel.Tokens;
 using System.Text;
 using TechHelper.Features;
 using TechHelper.Services;
+using TechHelper.Server.Services;
 
 
 var builder = WebApplication.CreateBuilder(args);
@@ -83,6 +84,7 @@ builder.Services.AddScoped<IAuthenticationService, AuthenticationService>();
 builder.Services.AddScoped<IEmailSender, QEmailSender>();
 builder.Services.AddTransient<IUserRegistrationService, UserRegistrationService>();
 builder.Services.AddScoped<IClassService, ClassService>();
+builder.Services.AddScoped<IExamService, ExamService>();
 
 
 builder.Services.AddEndpointsApiExplorer();
diff --git a/TechHelper.Server/Services/ExamService.cs b/TechHelper.Server/Services/ExamService.cs
index 5ee9bbf..85c4b9f 100644
--- a/TechHelper.Server/Services/ExamService.cs
+++ b/TechHelper.Server/Services/ExamService.cs
@@ -3,8 +3,10 @@ using Entities.Contracts;
 using Entities.DTO;
 using Microsoft.AspNetCore.Identity;
 using Microsoft.EntityFrameworkCore;
+using MySqlConnector;
 using SharedDATA.Api;
 using TechHelper.Services;
+using static TechHelper.Context.AutoMapperProFile;
 
 namespace TechHelper.Server.Services
 {
@@ -81,6 +83,74 @@ namespace TechHelper.Server.Services
 		}
 
 
+		public async Task<IEnumerable<AssignmentGroup>> LoadFullGroupTree(Guid rootGroupId)
+		{
+			var query = @"
+        WITH RECURSIVE GroupTree AS (
+            SELECT 
+                ag.*, 
+                CAST(ag.`number` AS CHAR(255)) AS path
+            FROM assignment_group ag 
+            WHERE ag.id = @rootId
+            
+            UNION ALL
+            
+            SELECT 
+                c.*, 
+                CONCAT(ct.path, '.', c.`number`)
+            FROM assignment_group c
+            INNER JOIN GroupTree ct ON c.parent_group = ct.id
+        )
+        SELECT * FROM GroupTree ORDER BY path;
+    ";
+
+			// 执行查询
+			var groups = await _unitOfWork.GetRepository<AssignmentGroup>()
+				.FromSql(query, new MySqlParameter("rootId", rootGroupId))
+				.ToListAsync();
+
+			// 内存中构建树结构
+			var groupDict = groups.ToDictionary(g => g.Id);
+			var root = groupDict[rootGroupId];
+
+			foreach (var group in groups)
+			{
+				if (group.ParentGroup != null && groupDict.TryGetValue(group.ParentGroup.Value, out var parent))
+				{
+					parent.ChildAssignmentGroups ??= new List<AssignmentGroup>();
+					parent.ChildAssignmentGroups.Add(group);
+				}
+			}
+
+			return new List<AssignmentGroup> { root };
+		}
+
+		public async Task LoadRecursiveAssignmentGroups(IEnumerable<AssignmentGroup> groups)
+		{
+			foreach (var group in groups.ToList())
+			{
+
+				var loadedGroup = await _unitOfWork.GetRepository<AssignmentGroup>()
+					.GetFirstOrDefaultAsync(
+						predicate: ag => ag.Id == group.Id,
+						include: source => source
+							.Include(ag => ag.AssignmentQuestions.Where(aq => !aq.IsDeleted))
+								.ThenInclude(aq => aq.Question)
+							.Include(ag => ag.ChildAssignmentGroups)
+					);
+
+				if (loadedGroup == null) continue;
+
+				group.ChildAssignmentGroups = loadedGroup.ChildAssignmentGroups;
+				group.AssignmentQuestions = loadedGroup.AssignmentQuestions;
+
+				if (group.ChildAssignmentGroups is { Count: > 0 })
+				{
+					await LoadRecursiveAssignmentGroups(group.ChildAssignmentGroups);
+				}
+			}
+		}
+
 		public async Task<ApiResponse> GetExamByIdAsync(Guid assignmentId)
 		{
 			try
@@ -93,15 +163,17 @@ namespace TechHelper.Server.Services
 					return ApiResponse.Error($"找不到 ID 为 {assignmentId} 的试卷。");
 				}
 
+
+
 				// 获取所有相关题组和题目，并过滤掉已删除的
-				var allGroups = await _unitOfWork.GetRepository<AssignmentGroup>().GetAllAsync(
+				var allGroups = await _unitOfWork.GetRepository<AssignmentGroup>().GetFirstOrDefaultAsync(
 					predicate: ag => ag.AssignmentId == assignmentId && !ag.IsDeleted,
 					include: source => source
-						.Include(ag => ag.AssignmentQuestions.Where(aq => !aq.IsDeleted))
-							.ThenInclude(aq => aq.Question)
+					.Include(ag => ag.ChildAssignmentGroups)
 				);
+				await LoadRecursiveAssignmentGroups(allGroups.ChildAssignmentGroups);
 
-				if (allGroups == null || !allGroups.Any())
+				if (allGroups == null || !allGroups.ChildAssignmentGroups.Any())
 				{
 					// 试卷存在但没有内容，返回一个空的 ExamDto
 					return ApiResponse.Success("试卷没有内容。", new ExamDto
@@ -113,10 +185,16 @@ namespace TechHelper.Server.Services
 					});
 				}
 
-				var rootGroups = allGroups
-					.Where(ag => ag.ParentGroup == null)
-					.OrderBy(ag => ag.Number)
-					.ToList();
+				var rootGroups = allGroups.ChildAssignmentGroups.ToList();
+
+				var rootqg = new QuestionGroupDto();
+
+				foreach (var ag in rootGroups.OrderBy(g => g.Number))
+				{
+					var agDto = MapAssignmentGroupToDto(ag);
+					rootqg.SubQuestionGroups.Add(agDto);
+				}
+
 
 				// 递归映射到 ExamDto
 				var examDto = new ExamDto
@@ -125,7 +203,7 @@ namespace TechHelper.Server.Services
 					AssignmentTitle = assignment.Title,
 					Description = assignment.Description,
 					SubjectArea = assignment.Submissions.ToString(),
-					QuestionGroups = MapAssignmentGroupsToDto(rootGroups, allGroups)
+					QuestionGroups = rootqg
 				};
 
 				return ApiResponse.Success("试卷信息已成功获取。", examDto);
@@ -137,9 +215,45 @@ namespace TechHelper.Server.Services
 		}
 
 
-		private List<QuestionGroupDto> MapAssignmentGroupsToDto(
-				List<AssignmentGroup> currentLevelGroups,
-				IEnumerable<AssignmentGroup> allFetchedGroups)
+		public QuestionGroupDto MapAssignmentGroupToDto(AssignmentGroup ag)
+		{
+			// 创建当前节点的DTO
+			var dto = new QuestionGroupDto
+			{
+				Title = ag.Title,
+				Score = (int)(ag.TotalPoints ?? 0),
+				Descript = ag.Descript,
+				SubQuestions = ag.AssignmentQuestions?
+					.OrderBy(aq => aq.QuestionNumber)
+					.Select(aq => new SubQuestionDto
+					{
+						Index = aq.QuestionNumber,
+						Stem = aq.Question?.QuestionText,
+						Score = aq.Score ?? 0,
+						SampleAnswer = aq.Question?.CorrectAnswer,
+						QuestionType = aq.Question?.QuestionType.ToString(),
+						DifficultyLevel = aq.Question?.DifficultyLevel.ToString(),
+						Options = new List<OptionDto>() // 根据需要初始化
+					}).ToList() ?? new List<SubQuestionDto>(),
+				SubQuestionGroups = new List<QuestionGroupDto>() // 初始化子集合
+			};
+
+			// 递归处理子组
+			if (ag.ChildAssignmentGroups != null && ag.ChildAssignmentGroups.Count > 0)
+			{
+				foreach (var child in ag.ChildAssignmentGroups.OrderBy(c => c.Number))
+				{
+					var childDto = MapAssignmentGroupToDto(child); // 递归获取子DTO
+					dto.SubQuestionGroups.Add(childDto); // 添加到当前节点的子集合
+				}
+			}
+
+			return dto;
+		}
+
+		private List<QuestionGroupDto> MapAssignmentGroupsToDto2(
+		List<AssignmentGroup> currentLevelGroups,
+		IEnumerable<AssignmentGroup> allFetchedGroups)
 		{
 			var dtos = new List<QuestionGroupDto>();
 
@@ -147,25 +261,25 @@ namespace TechHelper.Server.Services
 			{
 				var groupDto = new QuestionGroupDto
 				{
-				    
+
 					Title = group.Title,
 					Score = (int)(group.TotalPoints ?? 0),
-					QuestionReference = group.Descript,
+					Descript = group.Descript,
 					SubQuestions = group.AssignmentQuestions
 										.OrderBy(aq => aq.QuestionNumber)
 										.Select(aq => new SubQuestionDto
 										{
 											Index = aq.QuestionNumber,
 											Stem = aq.Question.QuestionText,
-											Score = aq.Score?? 0, // 使用 AssignmentQuestion 上的 Score
+											Score = aq.Score ?? 0,
 											SampleAnswer = aq.Question.CorrectAnswer,
 											QuestionType = aq.Question.QuestionType.ToString(),
 											DifficultyLevel = aq.Question.DifficultyLevel.ToString(),
-											Options = new List<OptionDto>() // 这里需要您根据实际存储方式填充 Option
+											Options = new List<OptionDto>()
 										}).ToList(),
 					// 递归映射子题组
-					SubQuestionGroups = MapAssignmentGroupsToDto(
-						allFetchedGroups.Where(ag => ag.ParentGroup == group.Id && !ag.IsDeleted).ToList(), // 从所有已获取的组中筛选子组
+					SubQuestionGroups = MapAssignmentGroupsToDto2(
+						allFetchedGroups.Where(ag => ag.ParentGroup == group.Id && !ag.IsDeleted).ToList(),
 						allFetchedGroups)
 				};
 				dtos.Add(groupDto);
@@ -176,7 +290,7 @@ namespace TechHelper.Server.Services
 		public async Task<TechHelper.Services.ApiResponse> SaveParsedExam(ExamDto examData)
 		{
 			// 获取当前登录用户
-			var currentUser = await _userManager.GetUserAsync(null);
+			var currentUser = await _userManager.FindByEmailAsync(examData.CreaterEmail);
 			if (currentUser == null)
 			{
 				return ApiResponse.Error("未找到当前登录用户，无法保存试题。");
@@ -204,16 +318,13 @@ namespace TechHelper.Server.Services
 
 				// 从 ExamDto.QuestionGroups 获取根题组。
 				// 确保只有一个根题组，因为您的模型是“试卷只有一个根节点”。
-				if (examData.QuestionGroups == null || examData.QuestionGroups.Count != 1)
+				if (examData.QuestionGroups == null)
 				{
 					throw new ArgumentException("试卷必须包含且只能包含一个根题组。");
 				}
 
-				// 递归处理根题组及其所有子题组和题目
-				// 传入的 assignmentId 仅用于设置根题组的 AssignmentId 字段
-				// 对于子题组，ProcessAndSaveAssignmentGroupsRecursive 会将 AssignmentId 设置为 null
 				await ProcessAndSaveAssignmentGroupsRecursive(
-					examData.QuestionGroups.Single(),
+					examData.QuestionGroups,
 					examData.SubjectArea.ToString(),
 					assignmentId,
 					null, // 根题组没有父级
@@ -246,14 +357,12 @@ namespace TechHelper.Server.Services
 			{
 				Id = Guid.NewGuid(), // 后端生成 GUID
 				Title = qgDto.Title,
-				Descript = qgDto.QuestionReference,
+				Descript = qgDto.Descript,
 				TotalPoints = qgDto.Score,
-				Number = (byte)qgDto.Index, // 使用 DTO 的 Index 作为 Number
-				ParentGroup = parentAssignmentGroupId, // 设置父级题组 GUID
-
-				// 关键修正：只有当 parentAssignmentGroupId 为 null 时，才设置 AssignmentId
-				// 这意味着当前题组是顶级题组
-				AssignmentId = parentAssignmentGroupId == null ? assignmentId : Guid.Empty,
+				Number = (byte)qgDto.Index,
+				ValidQuestionGroup = qgDto.ValidQuestionGroup,
+				ParentGroup = parentAssignmentGroupId,
+				AssignmentId = parentAssignmentGroupId == null ? assignmentId : (Guid?)null,
 				IsDeleted = false
 			};
 			await _unitOfWork.GetRepository<AssignmentGroup>().InsertAsync(newAssignmentGroup);
@@ -268,10 +377,7 @@ namespace TechHelper.Server.Services
 				newQuestion.CreatedAt = DateTime.UtcNow;
 				newQuestion.UpdatedAt = DateTime.UtcNow;
 				newQuestion.IsDeleted = false;
-				newQuestion.SubjectArea = (SubjectAreaEnum)Enum.Parse(typeof(SubjectAreaEnum), subjectarea, true);
-
-				// 处理 Options：如果 Options 是 JSON 字符串或需要其他存储方式，在这里处理
-				// 例如：newQuestion.QuestionText += (JsonConvert.SerializeObject(sqDto.Options));
+				newQuestion.SubjectArea = EnumMappingHelpers.ParseEnumSafe(subjectarea, SubjectAreaEnum.Unknown);
 
 				await _unitOfWork.GetRepository<Question>().InsertAsync(newQuestion);
 
@@ -279,9 +385,9 @@ namespace TechHelper.Server.Services
 				{
 					Id = Guid.NewGuid(),
 					QuestionId = newQuestion.Id,
-					QuestionNumber = (byte)questionNumber, // 使用递增的 questionNumber
-					AssignmentGroupId = newAssignmentGroup.Id, // 关联到当前题组
-					Score = sqDto.Score, // 从 DTO 获取单个子题分数
+					QuestionNumber = (byte)questionNumber,
+					AssignmentGroupId = newAssignmentGroup.Id,
+					Score = sqDto.Score,
 					IsDeleted = false,
 					CreatedAt = DateTime.UtcNow
 				};
@@ -302,5 +408,26 @@ namespace TechHelper.Server.Services
 					createdById);
 			}
 		}
+
+		public async Task<ApiResponse> GetAllExamPreview(Guid user)
+		{
+			try
+			{
+				var assignments = await _unitOfWork.GetRepository<Assignment>().GetAllAsync(
+					predicate: a => a.CreatedBy == user && !a.IsDeleted);
+
+				if (assignments.Any())
+				{
+					var exam = _mapper.Map<IEnumerable<ExamDto>>(assignments);
+					return  ApiResponse.Success(result: exam);	
+				}
+
+				return ApiResponse.Error("你还没有创建任何试卷");
+			}
+			catch (Exception ex)
+			{
+				return ApiResponse.Error($"查询出了一点问题 , 详细信息为: {ex.Message}, 请稍后再试");
+			}
+		}
 	}
 }
diff --git a/TechHelper.Server/Services/IExamService.cs b/TechHelper.Server/Services/IExamService.cs
index bd3778e..c9a39b1 100644
--- a/TechHelper.Server/Services/IExamService.cs
+++ b/TechHelper.Server/Services/IExamService.cs
@@ -5,6 +5,6 @@ namespace TechHelper.Server.Services
 {
 	public interface IExamService : IBaseService<ExamDto, Guid>
 	{
-
+		Task<ApiResponse> GetAllExamPreview(Guid user);
 	}
 }
diff --git a/TechHelper.Server/appsettings.json b/TechHelper.Server/appsettings.json
index 39216ce..f0871d6 100644
--- a/TechHelper.Server/appsettings.json
+++ b/TechHelper.Server/appsettings.json
@@ -6,7 +6,7 @@
     }
   },
   "ConnectionStrings": {
-    "XSDB": "Server=mysql.eazygame.cn;Port=13002;Database=tech_helper;User=root;Password=wx1998WX"
+    "XSDB": "Server=mysql.eazygame.cn;Port=13002;Database=test;User=root;Password=wx1998WX"
   },
   "JWTSettings": {
     "securityKey": "MxcxQHVYVDQ0U3lqWkIwdjZlSGx4eFp6YnFpUGxodmc5Y3hPZk5vWm9MZEg2Y0I=",