diff --git a/.vscode/settings.json b/.vscode/settings.json
index 25bab7a..8482c2c 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,3 +1,3 @@
 {
-  "cSpell.words": ["Getx", "tdesign"]
+  "cSpell.words": ["fenix", "Getx", "tdesign"]
 }
diff --git a/lib/app/bindings/initial_binding.dart b/lib/app/bindings/initial_binding.dart
index 620ccce..664b607 100644
--- a/lib/app/bindings/initial_binding.dart
+++ b/lib/app/bindings/initial_binding.dart
@@ -1,63 +1,15 @@
 import 'package:get/get.dart';
-import 'package:dio/dio.dart';
-import 'package:flutter/foundation.dart'; // 导入 debugPrint
 import 'package:get_storage/get_storage.dart';
 import 'package:problem_check_system/data/providers/connectivity_provider.dart';
+import 'package:problem_check_system/data/providers/dio_provider.dart';
 import 'package:problem_check_system/data/providers/local_database.dart';
 
 class InitialBinding implements Bindings {
   @override
   void dependencies() {
-    // 全局注册 GetStorage 实例 - 也改为使用 put 确保立即创建
     Get.put<GetStorage>(GetStorage(), permanent: true);
-    // 全局注册 Dio 实例 - 使用 put 而不是 lazyPut，并设置为永久
-    Get.put<Dio>(createDioInstance());
-    //
-    Get.put<LocalDatabase>(LocalDatabase());
-    Get.put<ConnectivityProvider>(ConnectivityProvider());
-  }
-
-  // 提取创建 Dio 实例的逻辑到单独的方法
-  Dio createDioInstance() {
-    final dio = Dio(
-      BaseOptions(
-        baseUrl: 'https://xhdev.anxincloud.cn', // 替换为你的服务器地址
-        connectTimeout: const Duration(seconds: 15),
-        receiveTimeout: const Duration(seconds: 15),
-      ),
-    );
-
-    // 添加日志拦截器，仅在调试模式下打印日志
-    if (kDebugMode) {
-      dio.interceptors.add(
-        LogInterceptor(
-          requestBody: true,
-          responseBody: true,
-          logPrint: (o) => debugPrint(o.toString()),
-        ),
-      );
-    }
-
-    // 添加认证拦截器
-    dio.interceptors.add(
-      InterceptorsWrapper(
-        onRequest: (options, handler) {
-          final token = ""; //todo 获取token
-          if (token != null && token.isNotEmpty) {
-            options.headers['Authorization'] = 'Bearer $token';
-          }
-          return handler.next(options);
-        },
-        onError: (DioException e, handler) {
-          if (e.response?.statusCode == 401) {
-            // 如果收到 401 Unauthorized 错误，跳转回登录页
-            Get.offAllNamed('/login');
-          }
-          return handler.next(e);
-        },
-      ),
-    );
-
-    return dio;
+    Get.put<DioProvider>(DioProvider(), permanent: true);
+    Get.put<LocalDatabase>(LocalDatabase(), permanent: true);
+    Get.put<ConnectivityProvider>(ConnectivityProvider(), permanent: true);
   }
 }
diff --git a/lib/data/models/auth_model.dart b/lib/data/models/auth_model.dart
new file mode 100644
index 0000000..fa1b2a6
--- /dev/null
+++ b/lib/data/models/auth_model.dart
@@ -0,0 +1,53 @@
+/// 登录请求模型
+class LoginRequest {
+  final String username;
+  final String password;
+  final String wechatJsCode;
+
+  LoginRequest({
+    required this.username,
+    required this.password,
+    this.wechatJsCode = "",
+  });
+
+  Map<String, dynamic> toJson() {
+    return {
+      'username': username,
+      'password': password,
+      'wechatJsCode': wechatJsCode,
+    };
+  }
+
+  // 从 Map 创建 LoginRequest 对象
+  factory LoginRequest.fromJson(Map<String, dynamic> json) {
+    return LoginRequest(
+      username: json['username'] as String,
+      password: json['password'] as String,
+      wechatJsCode: json['wechatJsCode'] as String,
+    );
+  }
+}
+
+/// 登录响应模型
+class LoginResponse {
+  final String token;
+  final String refreshToken;
+  final int expires;
+  final String name;
+
+  LoginResponse({
+    required this.token,
+    required this.refreshToken,
+    required this.expires,
+    required this.name,
+  });
+
+  factory LoginResponse.fromJson(Map<String, dynamic> json) {
+    return LoginResponse(
+      token: json['token'] ?? '',
+      refreshToken: json['refresh_token'] ?? '',
+      expires: json['expires'] ?? '',
+      name: json['name'] ?? '',
+    );
+  }
+}
diff --git a/lib/data/models/login_model.dart b/lib/data/models/login_model.dart
deleted file mode 100644
index e214c80..0000000
--- a/lib/data/models/login_model.dart
+++ /dev/null
@@ -1,12 +0,0 @@
-class LoginModel {
-  final String username;
-  final String password;
-
-  // 使用 const 构造函数，并要求所有字段在创建时必须被提供
-  const LoginModel({required this.username, required this.password});
-
-  // （可选）提供一个 toMap 方法，方便将对象转换为 JSON 或 Map
-  Map<String, dynamic> toMap() {
-    return {'username': username, 'password': password};
-  }
-}
diff --git a/lib/data/providers/auth_provider.dart b/lib/data/providers/auth_provider.dart
deleted file mode 100644
index d614011..0000000
--- a/lib/data/providers/auth_provider.dart
+++ /dev/null
@@ -1,19 +0,0 @@
-import 'package:dio/dio.dart';
-import 'package:problem_check_system/data/models/login_model.dart';
-
-class AuthProvider {
-  final String _signInUrl = '/api/Accounts/SignIn';
-
-  final Dio _dio;
-
-  AuthProvider({required Dio dio}) : _dio = dio;
-
-  Future<Response> signIn(LoginModel loginModel) async {
-    try {
-      final response = await _dio.post(_signInUrl, data: loginModel.toMap());
-      return response;
-    } on DioException {
-      rethrow;
-    }
-  }
-}
diff --git a/lib/data/providers/dio_provider.dart b/lib/data/providers/dio_provider.dart
new file mode 100644
index 0000000..51ea891
--- /dev/null
+++ b/lib/data/providers/dio_provider.dart
@@ -0,0 +1,265 @@
+import 'package:dio/dio.dart';
+import 'package:flutter/foundation.dart';
+import 'package:get/get.dart' hide Response;
+import 'package:pretty_dio_logger/pretty_dio_logger.dart';
+import 'package:problem_check_system/data/repositories/auth_repository.dart';
+import 'package:problem_check_system/modules/auth/controllers/auth_controller.dart';
+
+// DioProvider 是一个 GetxService，确保它在应用生命周期内是单例的。
+// 它负责初始化和配置 Dio 实例，并添加所有拦截器。
+class DioProvider extends GetxService {
+  static const String _baseUrl = 'https://xh.anxincloud.cn';
+
+  late final Dio _dio;
+
+  @override
+  Future<void> onInit() async {
+    super.onInit();
+    _initDio();
+  }
+
+  // 初始化 Dio 并配置基础选项。
+  void _initDio() {
+    _dio = Dio(
+      BaseOptions(
+        baseUrl: _baseUrl,
+        connectTimeout: const Duration(seconds: 30),
+        receiveTimeout: const Duration(seconds: 30),
+        sendTimeout: const Duration(seconds: 30),
+        headers: {
+          'Content-Type': 'application/json',
+          'Accept': 'application/json',
+        },
+      ),
+    );
+
+    // 添加拦截器。拦截器的顺序非常关键：
+    // 1. 认证拦截器 (AuthInterceptor): 负责添加 token 和处理 401 错误，优先级最高。
+    // 2. 错误拦截器 (ErrorInterceptor): 处理通用错误，作为所有其他拦截器之后的最终捕获。
+    // 3. 日志拦截器 (LoggerInterceptor): 在调试模式下打印详细日志，方便开发。
+    _dio.interceptors.addAll(_getInterceptors());
+  }
+
+  List<Interceptor> _getInterceptors() {
+    return [
+      _getAuthInterceptor(),
+      _getErrorInterceptor(),
+      if (kDebugMode) _getLoggerInterceptor(),
+    ];
+  }
+
+  /// 认证拦截器：处理请求头中的 token 添加和 401 错误重试。
+  Interceptor _getAuthInterceptor() {
+    return InterceptorsWrapper(
+      // 在请求发送前执行
+      onRequest: (options, handler) async {
+        try {
+          // 尝试获取 AuthRepository 并添加 token 到请求头。
+          final authRepository = Get.find<AuthRepository>();
+          final token = authRepository.getToken();
+          if (token != null && token.isNotEmpty) {
+            options.headers['Authorization'] = 'Bearer $token';
+          }
+        } catch (e) {
+          // 如果 AuthRepository 尚未初始化（例如在登录或注册时），则跳过添加认证头。
+          debugPrint('AuthRepository 未找到。跳过认证头。');
+        }
+        return handler.next(options);
+      },
+      // 在接收到错误时执行
+      onError: (error, handler) async {
+        // 专门处理 401 Unauthorized 错误。
+        if (error.response?.statusCode == 401) {
+          try {
+            final authRepository = Get.find<AuthRepository>();
+            // 尝试刷新 token。
+            await authRepository.refreshToken();
+
+            // 如果刷新成功，更新请求头并重试原始请求。
+            final newOptions = Options(
+              method: error.requestOptions.method,
+              headers: error.requestOptions.headers
+                ..['Authorization'] = 'Bearer ${authRepository.getToken()}',
+            );
+
+            final response = await _dio.request(
+              error.requestOptions.path,
+              data: error.requestOptions.data,
+              queryParameters: error.requestOptions.queryParameters,
+              options: newOptions,
+            );
+
+            // 使用 handler.resolve() 返回重试的结果，阻止错误继续传递。
+            return handler.resolve(response);
+          } on Exception catch (e) {
+            debugPrint('刷新 token 失败: $e');
+            // 如果刷新 token 失败，清除认证数据并跳转到登录页。
+            try {
+              final authController = Get.find<AuthController>();
+              await authController.logout();
+            } catch (e) {
+              // 如果 AuthController 找不到，作为备用方案手动清除数据并导航。
+              final authRepository = Get.find<AuthRepository>();
+              authRepository.clearAuthData();
+              if (Get.currentRoute != '/login') {
+                Get.offAllNamed('/login');
+              }
+            }
+            // 传播原始错误，让下一个拦截器（通用错误拦截器）处理。
+            return handler.next(error);
+          }
+        }
+        // 对于所有其他非 401 的错误，将错误传递给下一个拦截器。
+        return handler.next(error);
+      },
+    );
+  }
+
+  /// 日志拦截器：在调试模式下打印详细的请求和响应日志。
+  Interceptor _getLoggerInterceptor() {
+    return PrettyDioLogger(
+      requestHeader: true,
+      requestBody: true,
+      responseHeader: true,
+      responseBody: true,
+      error: true,
+      compact: false,
+      maxWidth: 90,
+    );
+  }
+
+  /// 错误拦截器：处理通用的网络和服务器端错误，并显示 Snackbar 提示。
+  Interceptor _getErrorInterceptor() {
+    return InterceptorsWrapper(
+      onError: (error, handler) {
+        // 处理网络连接超时或未知网络错误。
+        if (error.type == DioExceptionType.connectionTimeout ||
+            error.type == DioExceptionType.receiveTimeout ||
+            error.type == DioExceptionType.sendTimeout) {
+          Get.snackbar('网络超时', '请检查网络连接后重试');
+        } else if (error.type == DioExceptionType.unknown) {
+          Get.snackbar('网络异常', '请检查网络连接后重试');
+        }
+
+        // 这部分代码只会在 AuthInterceptor 没有处理的错误（即非 401）时执行。
+        if (error.response != null) {
+          final message = _handleStatusCode(error.response!);
+          Get.snackbar('请求错误', message);
+        }
+
+        return handler.next(error);
+      },
+    );
+  }
+
+  /// 辅助方法：根据 HTTP 状态码返回用户友好的错误信息。
+  String _handleStatusCode(Response response) {
+    switch (response.statusCode) {
+      case 400:
+        return response.data?['detail'] ?? '请求参数错误';
+      case 401:
+        return response.data?['detail'] ??
+            '未授权，请重新登录'; // 注意：对于 401 错误，这行代码理想情况下不会被执行。
+      case 403:
+        return response.data?['detail'] ?? '访问被拒绝';
+      case 404:
+        return response.data?['detail'] ?? '请求资源不存在';
+      case 422:
+        final errors = response.data?['errors'];
+        if (errors != null && errors is Map && errors.isNotEmpty) {
+          return errors.values.first?.first?.toString() ?? '数据验证失败';
+        }
+        return response.data?['detail'] ?? '数据验证失败';
+      case 500:
+        return response.data?['detail'] ?? '服务器内部错误';
+      case 502:
+        return response.data?['detail'] ?? '网关错误';
+      case 503:
+        return response.data?['detail'] ?? '服务不可用';
+      default:
+        return response.data?['detail'] ?? '网络异常(${response.statusCode})';
+    }
+  }
+
+  void clear() {
+    _dio.interceptors.clear();
+  }
+
+  /// 新增的请求方法
+
+  /// 发送 GET 请求
+  Future<Response> get(
+    String path, {
+    Map<String, dynamic>? queryParameters,
+    Options? options,
+    CancelToken? cancelToken,
+    ProgressCallback? onReceiveProgress,
+  }) async {
+    return await _dio.get(
+      path,
+      queryParameters: queryParameters,
+      options: options,
+      cancelToken: cancelToken,
+      onReceiveProgress: onReceiveProgress,
+    );
+  }
+
+  /// 发送 POST 请求
+  Future<Response> post(
+    String path, {
+    dynamic data,
+    Map<String, dynamic>? queryParameters,
+    Options? options,
+    CancelToken? cancelToken,
+    ProgressCallback? onSendProgress,
+    ProgressCallback? onReceiveProgress,
+  }) async {
+    return await _dio.post(
+      path,
+      data: data,
+      queryParameters: queryParameters,
+      options: options,
+      cancelToken: cancelToken,
+      onSendProgress: onSendProgress,
+      onReceiveProgress: onReceiveProgress,
+    );
+  }
+
+  /// 发送 PUT 请求
+  Future<Response> put(
+    String path, {
+    dynamic data,
+    Map<String, dynamic>? queryParameters,
+    Options? options,
+    CancelToken? cancelToken,
+    ProgressCallback? onSendProgress,
+    ProgressCallback? onReceiveProgress,
+  }) async {
+    return await _dio.put(
+      path,
+      data: data,
+      queryParameters: queryParameters,
+      options: options,
+      cancelToken: cancelToken,
+      onSendProgress: onSendProgress,
+      onReceiveProgress: onReceiveProgress,
+    );
+  }
+
+  /// 发送 DELETE 请求
+  Future<Response> delete(
+    String path, {
+    dynamic data,
+    Map<String, dynamic>? queryParameters,
+    Options? options,
+    CancelToken? cancelToken,
+  }) async {
+    return await _dio.delete(
+      path,
+      data: data,
+      queryParameters: queryParameters,
+      options: options,
+      cancelToken: cancelToken,
+    );
+  }
+}
diff --git a/lib/data/providers/user_provider.dart b/lib/data/providers/user_provider.dart
deleted file mode 100644
index a25d44c..0000000
--- a/lib/data/providers/user_provider.dart
+++ /dev/null
@@ -1,38 +0,0 @@
-import 'package:dio/dio.dart';
-
-class UserProvider {
-  final Dio _dio;
-
-  // 通过构造函数注入 Dio 实例
-  UserProvider({required Dio dio}) : _dio = dio;
-
-  /// 调用 API 修改用户密码
-  ///
-  /// @param newPassword 新密码
-  Future<Response> changePassword(String newPassword) async {
-    try {
-      final response = await _dio.post(
-        '/api/change_password', // 替换为你的修改密码接口地址
-        data: {
-          'new_password': newPassword,
-        },
-      );
-      return response;
-    } on DioException catch (e) {
-      // 抛出 DioException 以便在控制器中处理
-      throw e;
-    }
-  }
-
-  /// 调用 API 获取用户信息
-  ///
-  /// 这个方法可以用于获取用户的姓名、手机号等信息
-  Future<Response> getUserInfo() async {
-    try {
-      final response = await _dio.get('/api/user_info'); // 替换为你的用户信息接口地址
-      return response;
-    } on DioException catch (e) {
-      throw e;
-    }
-  }
-}
\ No newline at end of file
diff --git a/lib/data/repositories/auth_repository.dart b/lib/data/repositories/auth_repository.dart
index e69de29..8386862 100644
--- a/lib/data/repositories/auth_repository.dart
+++ b/lib/data/repositories/auth_repository.dart
@@ -0,0 +1,138 @@
+import 'dart:developer';
+
+import 'package:dio/dio.dart';
+import 'package:get/get.dart';
+import 'package:get_storage/get_storage.dart';
+import 'package:problem_check_system/data/models/auth_model.dart';
+import 'package:problem_check_system/data/providers/connectivity_provider.dart';
+import 'package:problem_check_system/data/providers/dio_provider.dart';
+
+class AuthRepository extends GetxService {
+  final DioProvider dioProvider;
+  final GetStorage storage;
+  final ConnectivityProvider connectivityProvider;
+
+  AuthRepository({
+    required this.dioProvider,
+    required this.storage,
+    required this.connectivityProvider,
+  });
+
+  static const String _tokenKey = 'token';
+  static const String _refreshTokenKey = 'refresh_token';
+  static const String _loginKey = 'user';
+  static const String _rememberPassword = 'remember_password';
+
+  void saveToken(String token) {
+    storage.write(_tokenKey, token);
+  }
+
+  String? getToken() {
+    return storage.read(_tokenKey);
+  }
+
+  void saveRefreshToken(String refreshToken) {
+    storage.write(_refreshTokenKey, refreshToken);
+  }
+
+  String? getRefreshToken() {
+    return storage.read(_refreshTokenKey);
+  }
+
+  void addLoginKey(LoginRequest login) {
+    storage.write(_loginKey, login.toJson());
+  }
+
+  /// 登录请求
+  LoginRequest getLoginKey() {
+    final loginData = storage.read(_loginKey);
+
+    // 检查是否找到数据，并进行反序列化
+    if (loginData != null) {
+      // 确保类型正确，然后进行反序列化
+      return LoginRequest.fromJson(Map<String, dynamic>.from(loginData));
+    }
+
+    // 如果没有找到数据，返回一个默认的空对象
+    return LoginRequest(username: '', password: '');
+  }
+
+  void removeLoginKey() {
+    storage.remove(_loginKey);
+  }
+
+  void addRememberPassword(bool remembered) {
+    storage.write(_rememberPassword, remembered);
+  }
+
+  bool getRememberPassword() {
+    return storage.read(_rememberPassword);
+  }
+
+  void clearAuthData() {
+    storage.remove(_tokenKey);
+    storage.remove(_refreshTokenKey);
+  }
+
+  // 是否在线
+  bool get isOnline {
+    return connectivityProvider.isOnline.value;
+  }
+
+  /// Check if a user is currently logged in by verifying the existence of a token.
+  bool isLoggedIn() {
+    final token = getToken();
+    return token != null && token.isNotEmpty;
+  }
+
+  /// Handles the user login process by calling the API and saving the response.
+  Future<LoginResponse> login(LoginRequest request) async {
+    try {
+      final response = await dioProvider.post(
+        '/api/Accounts/SignIn',
+        data: request.toJson(),
+      );
+
+      final loginResponse = LoginResponse.fromJson(response.data);
+      return loginResponse;
+    } catch (e) {
+      throw Exception(e);
+    }
+  }
+
+  /// Refreshes the authentication token using the refresh token.
+  Future<LoginResponse> refreshToken() async {
+    final refreshToken = getRefreshToken();
+    if (refreshToken == null || refreshToken.isEmpty) {
+      throw Exception('没有可用的刷新token');
+    }
+
+    try {
+      final response = await dioProvider.post(
+        '/auth/refresh',
+        data: {'refresh_token': refreshToken},
+      );
+
+      final authResponse = LoginResponse.fromJson(response.data);
+      saveToken(authResponse.token);
+      saveRefreshToken(authResponse.refreshToken);
+
+      return authResponse;
+    } catch (e) {
+      throw Exception(e);
+    }
+  }
+
+  /// Logs the user out by calling the API and then clearing local data.
+  Future<void> logout() async {
+    try {
+      // Attempt to call the API, but even if it fails, continue to clear local data.
+      await dioProvider.post('/auth/logout');
+    } on DioException catch (e) {
+      log('退出登录API调用失败: ${e.message}');
+    } finally {
+      // Regardless of API success or failure, always clear local storage.
+      clearAuthData();
+    }
+  }
+}
diff --git a/lib/modules/auth/bindings/auth_binding.dart b/lib/modules/auth/bindings/auth_binding.dart
index bc7b64e..217da5f 100644
--- a/lib/modules/auth/bindings/auth_binding.dart
+++ b/lib/modules/auth/bindings/auth_binding.dart
@@ -1,23 +1,33 @@
 import 'package:get/get.dart';
-import 'package:dio/dio.dart';
 import 'package:get_storage/get_storage.dart';
+import 'package:problem_check_system/data/providers/connectivity_provider.dart';
+import 'package:problem_check_system/data/providers/dio_provider.dart';
+import 'package:problem_check_system/data/repositories/auth_repository.dart';
 import 'package:problem_check_system/modules/auth/controllers/auth_controller.dart';
-import 'package:problem_check_system/data/providers/auth_provider.dart';
 
 class AuthBinding implements Bindings {
   @override
   void dependencies() {
     // 1. 注入数据提供者 (AuthProvider)，它依赖于 Dio
     // 依赖注入通过构造函数完成，使代码更易于测试
-    Get.lazyPut<AuthProvider>(() => AuthProvider(dio: Get.find<Dio>()));
+    final DioProvider dioProvider = Get.find<DioProvider>();
+    final GetStorage storage = Get.find<GetStorage>();
+    final ConnectivityProvider connectivityProvider =
+        Get.find<ConnectivityProvider>();
+
+    Get.lazyPut<AuthRepository>(
+      () => AuthRepository(
+        dioProvider: dioProvider,
+        storage: storage,
+        connectivityProvider: connectivityProvider,
+      ),
+    );
 
     // 2. 注入控制器 (AuthController)，它依赖于 AuthProvider
     // 控制器通过 Get.find() 获取已注入的依赖
     Get.lazyPut<AuthController>(
-      () => AuthController(
-        authProvider: Get.find<AuthProvider>(),
-        storage: Get.find<GetStorage>(),
-      ),
+      () => AuthController(authRepository: Get.find<AuthRepository>()),
+      fenix: true,
     );
   }
 }
diff --git a/lib/modules/auth/controllers/auth_controller.dart b/lib/modules/auth/controllers/auth_controller.dart
index a7b4330..d17b332 100644
--- a/lib/modules/auth/controllers/auth_controller.dart
+++ b/lib/modules/auth/controllers/auth_controller.dart
@@ -1,62 +1,45 @@
-// lib/modules/auth/controllers/auth_controller.dart
-import 'package:flutter/material.dart'; // 导入此库以使用 TextEditingController
+import 'package:flutter/material.dart';
 import 'package:get/get.dart';
-import 'package:dio/dio.dart';
-import 'package:get_storage/get_storage.dart';
-import 'package:connectivity_plus/connectivity_plus.dart';
-import 'package:problem_check_system/data/providers/auth_provider.dart';
-import 'package:problem_check_system/data/models/login_model.dart';
+import 'package:problem_check_system/data/models/auth_model.dart';
 import 'package:problem_check_system/app/routes/app_routes.dart';
+import 'package:problem_check_system/data/repositories/auth_repository.dart';
 
 class AuthController extends GetxController {
-  final AuthProvider _authProvider;
-  final GetStorage _storage;
-
-  // 将 TextEditingController 移动到控制器中，由控制器管理它们的生命周期
-  late final TextEditingController usernameController = TextEditingController();
-  late final TextEditingController passwordController = TextEditingController();
+  final AuthRepository _authRepository;
+  final TextEditingController usernameController = TextEditingController();
+  final TextEditingController passwordController = TextEditingController();
 
   final isLoading = false.obs;
   final rememberPassword = false.obs;
 
-  static const _usernameKey = 'username';
-  static const _passwordKey = 'password';
-
-  AuthController({
-    required AuthProvider authProvider,
-    required GetStorage storage,
-  }) : _authProvider = authProvider,
-       _storage = storage;
+  AuthController({required AuthRepository authRepository})
+    : _authRepository = authRepository;
 
   @override
   void onInit() {
     super.onInit();
-    _loadSavedCredentials();
+    _loadRememberedUser();
   }
 
-  void _loadSavedCredentials() {
-    final savedUsername = _storage.read(_usernameKey);
-    final savedPassword = _storage.read(_passwordKey);
-
-    if (savedUsername != null && savedPassword != null) {
-      // 从本地存储加载值，并设置给控制器
-      usernameController.text = savedUsername;
-      passwordController.text = savedPassword;
-      rememberPassword.value = true;
+  void _loadRememberedUser() {
+    final remember = _authRepository.getRememberPassword();
+    rememberPassword.value = remember;
+    if (remember) {
+      final loginData = _authRepository.getLoginKey();
+      usernameController.text = loginData.username;
+      passwordController.text = loginData.password;
     }
   }
 
-  String getToken() {
-    return _storage.read('token') ?? '';
+  /// Check if the user is already logged in by delegating to the repository.
+  bool isLoggedIn() {
+    return _authRepository.isLoggedIn();
   }
 
-  // 移除了 updateUsername 和 updatePassword 方法，因为不再需要它们来同步值。
-  // TextEditingController 本身就是值的来源。
-
+  /// 登录逻辑
   Future<void> login() async {
-    // 直接从控制器获取文本内容
-    final username = usernameController.text;
-    final password = passwordController.text;
+    final username = usernameController.text.trim();
+    final password = passwordController.text.trim();
 
     if (username.isEmpty || password.isEmpty) {
       Get.snackbar('输入错误', '用户名和密码不能为空');
@@ -64,79 +47,53 @@ class AuthController extends GetxController {
     }
 
     isLoading.value = true;
+    final loginData = LoginRequest(username: username, password: password);
 
-    var connectivityResult = await (Connectivity().checkConnectivity());
-    bool isConnected =
-        connectivityResult.contains(ConnectivityResult.mobile) ||
-        connectivityResult.contains(ConnectivityResult.wifi) ||
-        connectivityResult.contains(ConnectivityResult.ethernet);
-
-    if (isConnected) {
-      await _onlineLogin(username, password);
+    if (_authRepository.isOnline) {
+      await _onlineLogin(loginData);
     } else {
-      await _offlineLogin(username, password);
+      _offlineLogin(loginData);
     }
-
     isLoading.value = false;
   }
 
-  Future<void> _onlineLogin(String username, String password) async {
+  /// 在线登录
+  Future<void> _onlineLogin(LoginRequest loginRequest) async {
     try {
-      final loginData = LoginModel(username: username, password: password);
-
-      final response = await _authProvider.signIn(loginData);
-
-      if (response.statusCode == 200 && response.data['token'] != null) {
-        final token = response.data['token'];
-        final refreshToken = response.data['refreshToken'];
-
-        _storage.write('token', token);
-        _storage.write('refreshToken', refreshToken);
-
-        // 如果记住密码，保存用户名和密码
-        if (rememberPassword.value) {
-          _storage.write(_usernameKey, username);
-          _storage.write(_passwordKey, password);
-        } else {
-          // 否则清除所有本地凭据
-          _storage.remove(_usernameKey);
-          _storage.remove(_passwordKey);
-        }
-
-        Get.offAllNamed(AppRoutes.home);
-      } else {
-        Get.snackbar('登录失败', '服务器返回了异常数据');
-      }
-    } on DioException catch (e) {
-      if (e.response?.data != null && e.response?.data['detail'] != null) {
-        final serverMessage = e.response!.data['detail'];
-        Get.snackbar('登录失败', serverMessage);
+      var loginResponse = await _authRepository.login(loginRequest);
+      // 登录成功后
+      _authRepository.saveToken(loginResponse.token);
+      _authRepository.saveRefreshToken(loginResponse.refreshToken);
+      _authRepository.addRememberPassword(rememberPassword.value);
+
+      if (rememberPassword.value) {
+        _authRepository.addLoginKey(loginRequest);
       } else {
-        Get.snackbar('网络错误', '登录失败，请检查您的网络连接');
+        _authRepository.removeLoginKey();
       }
+      Get.offAllNamed(AppRoutes.home);
     } catch (e) {
-      Get.snackbar('错误', '发生未知错误: ${e.toString()}');
+      throw Exception(e);
     }
   }
 
-  Future<void> _offlineLogin(String username, String password) async {
-    final storedUsername = _storage.read(_usernameKey);
-    final storedPassword = _storage.read(_passwordKey);
+  void _offlineLogin(LoginRequest loginRequest) {
+    final loginData = _authRepository.getLoginKey();
 
-    if (storedUsername != null &&
-        storedPassword != null &&
-        storedUsername == username &&
-        storedPassword == password) {
+    if (loginData.username == loginRequest.username &&
+        loginData.password == loginRequest.password) {
       Get.offAllNamed(AppRoutes.home);
       Get.snackbar('离线登录成功', '您已离线登录到系统');
     } else {
-      Get.snackbar('离线登录失败', '无网络连接，且无法验证本地凭证');
+      Get.snackbar('登录失败', '无网络连接，且无法验证本地凭证');
     }
   }
 
+  /// Handles the logout process by delegating to the repository.
   Future<void> logout() async {
-    _storage.remove('token');
-    _storage.remove('refreshToken');
+    isLoading.value = true;
+    await _authRepository.logout();
+    isLoading.value = false;
     Get.offAllNamed(AppRoutes.login);
   }
 }
diff --git a/lib/modules/auth/views/login_page.dart b/lib/modules/auth/views/login_page.dart
index e795857..fa72f87 100644
--- a/lib/modules/auth/views/login_page.dart
+++ b/lib/modules/auth/views/login_page.dart
@@ -62,7 +62,7 @@ class LoginPage extends GetView<AuthController> {
       width: 334.w,
       height: 574.5.h,
       decoration: BoxDecoration(
-        color: const Color(0xFFFFFFFF).withOpacity(0.6),
+        color: const Color(0xFFFFFFFF).withValues(alpha: 153),
         borderRadius: BorderRadius.all(Radius.circular(23.5.r)),
       ),
       padding: EdgeInsets.all(24.w),
diff --git a/lib/modules/home/bindings/home_binding.dart b/lib/modules/home/bindings/home_binding.dart
index 464ace3..8b3e17f 100644
--- a/lib/modules/home/bindings/home_binding.dart
+++ b/lib/modules/home/bindings/home_binding.dart
@@ -1,9 +1,7 @@
-import 'package:dio/dio.dart';
 import 'package:get/get.dart';
-import 'package:get_storage/get_storage.dart';
-import 'package:problem_check_system/data/providers/auth_provider.dart';
 import 'package:problem_check_system/data/providers/connectivity_provider.dart';
 import 'package:problem_check_system/data/providers/local_database.dart';
+import 'package:problem_check_system/data/repositories/auth_repository.dart';
 import 'package:problem_check_system/modules/auth/controllers/auth_controller.dart';
 import 'package:problem_check_system/modules/home/controllers/home_controller.dart';
 import 'package:problem_check_system/modules/my/controllers/my_controller.dart';
@@ -12,7 +10,6 @@ import 'package:problem_check_system/modules/problem/controllers/problem_control
 class HomeBinding implements Bindings {
   @override
   void dependencies() {
-    final Dio dio = Get.find<Dio>();
     final LocalDatabase database = Get.find<LocalDatabase>();
     final ConnectivityProvider connectivityProvider =
         Get.find<ConnectivityProvider>();
@@ -21,18 +18,23 @@ class HomeBinding implements Bindings {
     Get.lazyPut<ProblemController>(
       () => ProblemController(
         localDatabase: database,
-        dio: dio,
+
         connectivityProvider: connectivityProvider,
+        dioProvider: Get.find(),
       ),
       fenix: true,
     );
     Get.lazyPut<MyController>(() => MyController());
-    Get.lazyPut<AuthProvider>(() => AuthProvider(dio: dio));
-    Get.lazyPut<AuthController>(
-      () => AuthController(
-        authProvider: Get.find<AuthProvider>(),
-        storage: Get.find<GetStorage>(),
+    Get.lazyPut<AuthRepository>(
+      () => AuthRepository(
+        dioProvider: Get.find(),
+        storage: Get.find(),
+        connectivityProvider: connectivityProvider,
       ),
     );
+    Get.lazyPut<AuthController>(
+      () => AuthController(authRepository: Get.find()),
+      fenix: true,
+    );
   }
 }
diff --git a/lib/modules/my/bingdings/change_password_binding.dart b/lib/modules/my/bingdings/change_password_binding.dart
index ff0f9f2..aa0323c 100644
--- a/lib/modules/my/bingdings/change_password_binding.dart
+++ b/lib/modules/my/bingdings/change_password_binding.dart
@@ -1,17 +1,20 @@
-import 'package:dio/dio.dart';
 import 'package:get/get.dart';
+import 'package:problem_check_system/data/repositories/auth_repository.dart';
 import 'package:problem_check_system/modules/my/controllers/change_password_controller.dart';
-import 'package:problem_check_system/data/providers/user_provider.dart'; // 假设你有这个 Provider
 
 class ChangePasswordBinding implements Bindings {
   @override
   void dependencies() {
-    // 如果 ChangePasswordController 依赖于 UserProvider，则需要先注入它
-    final dio = Get.find<Dio>();
-    Get.lazyPut<UserProvider>(() => UserProvider(dio: dio));
+    Get.lazyPut<AuthRepository>(
+      () => AuthRepository(
+        dioProvider: Get.find(),
+        storage: Get.find(),
+        connectivityProvider: Get.find(),
+      ),
+    );
     Get.lazyPut<ChangePasswordController>(
       // 如果需要，可以在这里注入依赖
-      () => ChangePasswordController(userProvider: Get.find()),
+      () => ChangePasswordController(authRepository: Get.find()),
     );
   }
-}
\ No newline at end of file
+}
diff --git a/lib/modules/my/controllers/change_password_controller.dart b/lib/modules/my/controllers/change_password_controller.dart
index 96865f4..2971b79 100644
--- a/lib/modules/my/controllers/change_password_controller.dart
+++ b/lib/modules/my/controllers/change_password_controller.dart
@@ -1,5 +1,5 @@
 import 'package:get/get.dart';
-import 'package:problem_check_system/data/providers/user_provider.dart'; // 假设你有一个用户相关的 Provider
+import 'package:problem_check_system/data/repositories/auth_repository.dart';
 
 class ChangePasswordController extends GetxController {
   // 响应式变量，用于存储新密码和确认密码
@@ -8,9 +8,9 @@ class ChangePasswordController extends GetxController {
   var isLoading = false.obs;
 
   // 假设你需要一个 UserProvider 来处理 API 请求
-  final UserProvider _userProvider;
-  ChangePasswordController({required UserProvider userProvider})
-      : _userProvider = userProvider;
+  final AuthRepository _authRepository;
+  ChangePasswordController({required AuthRepository authRepository})
+    : _authRepository = authRepository;
 
   // 更新新密码
   void updateNewPassword(String value) {
@@ -54,4 +54,4 @@ class ChangePasswordController extends GetxController {
       isLoading.value = false;
     }
   }
-}
\ No newline at end of file
+}
diff --git a/lib/modules/my/views/change_password.dart b/lib/modules/my/views/change_password.dart
index 36f4922..fcfe81b 100644
--- a/lib/modules/my/views/change_password.dart
+++ b/lib/modules/my/views/change_password.dart
@@ -9,7 +9,8 @@ class ChangePasswordPage extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     // 获取控制器实例
-    final ChangePasswordController controller = Get.find<ChangePasswordController>();
+    final ChangePasswordController controller =
+        Get.find<ChangePasswordController>();
 
     return Scaffold(
       appBar: _buildAppBar(),
@@ -48,10 +49,7 @@ class ChangePasswordPage extends StatelessWidget {
       centerTitle: true,
       title: const Text(
         '修改密码',
-        style: TextStyle(
-          color: Colors.black,
-          fontWeight: FontWeight.bold,
-        ),
+        style: TextStyle(color: Colors.black, fontWeight: FontWeight.bold),
       ),
       leading: IconButton(
         icon: const Icon(Icons.arrow_back_ios, color: Colors.black),
@@ -74,7 +72,7 @@ class ChangePasswordPage extends StatelessWidget {
         borderRadius: BorderRadius.circular(12.r),
         boxShadow: [
           BoxShadow(
-            color: Colors.grey.withOpacity(0.1),
+            color: Colors.grey.withValues(alpha: 25.5),
             spreadRadius: 2,
             blurRadius: 5,
             offset: const Offset(0, 3),
@@ -98,10 +96,7 @@ class ChangePasswordPage extends StatelessWidget {
             obscureText: obscureText,
             decoration: InputDecoration(
               hintText: hintText,
-              hintStyle: TextStyle(
-                color: Colors.grey,
-                fontSize: 14.sp,
-              ),
+              hintStyle: TextStyle(color: Colors.grey, fontSize: 14.sp),
               border: InputBorder.none, // 移除下划线
               isDense: true,
               contentPadding: EdgeInsets.zero,
@@ -129,10 +124,7 @@ class ChangePasswordPage extends StatelessWidget {
             ),
             child: Text(
               '取消',
-              style: TextStyle(
-                fontSize: 16.sp,
-                color: const Color(0xFF5695FD),
-              ),
+              style: TextStyle(fontSize: 16.sp, color: const Color(0xFF5695FD)),
             ),
           ),
         ),
@@ -153,14 +145,11 @@ class ChangePasswordPage extends StatelessWidget {
             ),
             child: Text(
               '确定',
-              style: TextStyle(
-                fontSize: 16.sp,
-                color: Colors.white,
-              ),
+              style: TextStyle(fontSize: 16.sp, color: Colors.white),
             ),
           ),
         ),
       ],
     );
   }
-}
\ No newline at end of file
+}
diff --git a/lib/modules/problem/bindings/problem_binding.dart b/lib/modules/problem/bindings/problem_binding.dart
index 4fc8e2e..4b0ec50 100644
--- a/lib/modules/problem/bindings/problem_binding.dart
+++ b/lib/modules/problem/bindings/problem_binding.dart
@@ -1,5 +1,4 @@
 import 'package:get/get.dart';
-import 'package:dio/dio.dart';
 import 'package:problem_check_system/data/providers/connectivity_provider.dart';
 import 'package:problem_check_system/modules/problem/controllers/problem_controller.dart';
 import 'package:problem_check_system/data/providers/local_database.dart';
@@ -13,7 +12,7 @@ class ProblemBinding implements Bindings {
     Get.lazyPut<ProblemController>(
       () => ProblemController(
         localDatabase: Get.find<LocalDatabase>(),
-        dio: Get.find<Dio>(),
+        dioProvider: Get.find(),
         connectivityProvider: Get.find<ConnectivityProvider>(),
       ),
     );
diff --git a/lib/modules/problem/controllers/problem_controller.dart b/lib/modules/problem/controllers/problem_controller.dart
index b9d2499..b15257b 100644
--- a/lib/modules/problem/controllers/problem_controller.dart
+++ b/lib/modules/problem/controllers/problem_controller.dart
@@ -5,6 +5,7 @@ import 'package:get/get.dart' hide MultipartFile, FormData;
 import 'package:flutter/material.dart';
 import 'dart:io';
 import 'package:path/path.dart' as path;
+import 'package:problem_check_system/data/providers/dio_provider.dart';
 import 'package:problem_check_system/modules/problem/views/widgets/custom_data_range_dropdown.dart';
 import 'package:problem_check_system/data/models/problem_model.dart';
 import 'package:problem_check_system/data/providers/local_database.dart';
@@ -34,7 +35,7 @@ class ProblemController extends GetxController
 
   /// 是否加载中
   final RxBool isLoading = false.obs;
-  final Dio _dio;
+  final DioProvider _dioProvider;
   final ConnectivityProvider _connectivityProvider;
 
   late TabController tabController;
@@ -50,10 +51,10 @@ class ProblemController extends GetxController
 
   ProblemController({
     required LocalDatabase localDatabase,
-    required Dio dio,
+    required DioProvider dioProvider,
     required ConnectivityProvider connectivityProvider,
   }) : _localDatabase = localDatabase,
-       _dio = dio,
+       _dioProvider = dioProvider,
        _connectivityProvider = connectivityProvider;
 
   @override
@@ -334,7 +335,7 @@ class ProblemController extends GetxController
         }
       }
 
-      final response = await _dio.post(
+      final response = await _dioProvider.post(
         'https://your-server.com/api/problems',
         data: formData,
         options: Options(
diff --git a/macos/Flutter/GeneratedPluginRegistrant.swift b/macos/Flutter/GeneratedPluginRegistrant.swift
index 84fbaae..e2ff0cb 100644
--- a/macos/Flutter/GeneratedPluginRegistrant.swift
+++ b/macos/Flutter/GeneratedPluginRegistrant.swift
@@ -8,13 +8,11 @@ import Foundation
 import connectivity_plus
 import file_selector_macos
 import path_provider_foundation
-import shared_preferences_foundation
 import sqflite_darwin
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
   ConnectivityPlusPlugin.register(with: registry.registrar(forPlugin: "ConnectivityPlusPlugin"))
   FileSelectorPlugin.register(with: registry.registrar(forPlugin: "FileSelectorPlugin"))
   PathProviderPlugin.register(with: registry.registrar(forPlugin: "PathProviderPlugin"))
-  SharedPreferencesPlugin.register(with: registry.registrar(forPlugin: "SharedPreferencesPlugin"))
   SqflitePlugin.register(with: registry.registrar(forPlugin: "SqflitePlugin"))
 }
diff --git a/pubspec.lock b/pubspec.lock
index a96742b..9e881ac 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -129,14 +129,6 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "2.1.4"
-  file:
-    dependency: transitive
-    description:
-      name: file
-      sha256: a3b4f84adafef897088c160faf7dfffb7696046cb13ae90b508c2cbc95d3b8d4
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "7.0.1"
   file_selector_linux:
     dependency: transitive
     description:
@@ -552,62 +544,14 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "2.1.8"
-  shared_preferences:
+  pretty_dio_logger:
     dependency: "direct main"
     description:
-      name: shared_preferences
-      sha256: "6e8bf70b7fef813df4e9a36f658ac46d107db4b4cfe1048b477d4e453a8159f5"
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.5.3"
-  shared_preferences_android:
-    dependency: transitive
-    description:
-      name: shared_preferences_android
-      sha256: "5bcf0772a761b04f8c6bf814721713de6f3e5d9d89caf8d3fe031b02a342379e"
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.4.11"
-  shared_preferences_foundation:
-    dependency: transitive
-    description:
-      name: shared_preferences_foundation
-      sha256: "6a52cfcdaeac77cad8c97b539ff688ccfc458c007b4db12be584fbe5c0e49e03"
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.5.4"
-  shared_preferences_linux:
-    dependency: transitive
-    description:
-      name: shared_preferences_linux
-      sha256: "580abfd40f415611503cae30adf626e6656dfb2f0cee8f465ece7b6defb40f2f"
+      name: pretty_dio_logger
+      sha256: "36f2101299786d567869493e2f5731de61ce130faa14679473b26905a92b6407"
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.4.1"
-  shared_preferences_platform_interface:
-    dependency: transitive
-    description:
-      name: shared_preferences_platform_interface
-      sha256: "57cbf196c486bc2cf1f02b85784932c6094376284b3ad5779d1b1c6c6a816b80"
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.4.1"
-  shared_preferences_web:
-    dependency: transitive
-    description:
-      name: shared_preferences_web
-      sha256: c49bd060261c9a3f0ff445892695d6212ff603ef3115edbb448509d407600019
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.4.3"
-  shared_preferences_windows:
-    dependency: transitive
-    description:
-      name: shared_preferences_windows
-      sha256: "94ef0f72b2d71bc3e700e025db3710911bd51a71cefb65cc609dd0d9a982e3c1"
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.4.1"
+    version: "1.4.0"
   sky_engine:
     dependency: transitive
     description: flutter
diff --git a/pubspec.yaml b/pubspec.yaml
index b290be6..8befe21 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -20,7 +20,7 @@ dependencies:
   path: ^1.9.1
   path_provider: ^2.1.5
   permission_handler: ^12.0.1
-  shared_preferences: ^2.5.3
+  pretty_dio_logger: ^1.4.0
   sqflite: ^2.4.2
   tdesign_flutter: ^0.2.4
   uuid: ^4.5.1