添加项目文件。

TechHelper.Client/AuthProviders/AuthStateProvider.cs

@@ -0,0 +1,64 @@
+using Microsoft.AspNetCore.Components.Authorization;
+using System.Security.Claims;
+using System.Net.Http.Headers;
+using TechHelper.Features;
+using Microsoft.JSInterop;
+
+namespace TechHelper.Client.AuthProviders
+{
+	public class AuthStateProvider : AuthenticationStateProvider
+	{
+		private readonly HttpClient _httpClient;
+		private readonly AuthenticationState _anonymous;
+		private readonly ILocalStorageService _localStorageService;
+
+		public AuthStateProvider(ILocalStorageService localStorageService, HttpClient httpClient)
+		{
+			_localStorageService = localStorageService;
+			_httpClient = httpClient;
+			_anonymous = new AuthenticationState(
+				new ClaimsPrincipal(new ClaimsIdentity()));
+		}
+
+
+		public override async Task<AuthenticationState> GetAuthenticationStateAsync()
+		{
+			string? token = null;
+
+			try
+			{
+				token =  _localStorageService.GetItem<string>("authToken");
+			}
+			catch (Exception ex)
+			{
+				Console.WriteLine($"Error accessing LocalStorage or parsing token: {ex.Message}"); 
+				return _anonymous; 
+			}
+			if (string.IsNullOrEmpty(token))
+				return _anonymous;
+
+			_httpClient.DefaultRequestHeaders.Authorization = 
+				new AuthenticationHeaderValue("bearer", token);
+
+			return new AuthenticationState(new ClaimsPrincipal(
+				new ClaimsIdentity(JWTParser.ParseClaimsFromJwt(token), "jwtAuthType")));
+		}
+
+		public void NotifyUserAuthentication(string token)
+		{
+			var authenticatedUser = new ClaimsPrincipal(new ClaimsIdentity(
+				JWTParser.ParseClaimsFromJwt(token), "jwtAuthType"));
+
+			var authState = Task.FromResult(new AuthenticationState(authenticatedUser));	
+
+			NotifyAuthenticationStateChanged(authState);
+		}
+
+		public void NotifyUserLogout()
+		{
+			var authState = Task.FromResult(_anonymous);
+
+			NotifyAuthenticationStateChanged(authState);
+		}
+	}
+}

TechHelper.Client/AuthProviders/TestAuthStateProvider.cs

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+using Microsoft.AspNetCore.Components.Authorization;
+using System.Security.Claims;
+
+namespace TechHelper.Client.AuthProviders
+{
+	public class TestAuthStateProvider : AuthenticationStateProvider
+	{
+
+
+		public override async Task<AuthenticationState> GetAuthenticationStateAsync()
+		{
+			var claims = new List<Claim>
+			{
+				new Claim(ClaimTypes.Name, "John Doe"),
+				new Claim(ClaimTypes.Role, "Administrator")
+			};
+
+			var anonymous = new ClaimsIdentity();
+
+			return await Task.FromResult(new AuthenticationState(new ClaimsPrincipal(anonymous)));
+		}
+	}
+}