youhua

flutter_monisuo/lib/core/network/api_response.dart

@@ -0,0 +1,74 @@
+/// API 响应状态码
+class ResponseCode {
+  static const String success = '0000';
+  static const String unauthorized = '0002';
+}
+
+/// API 响应模型
+class ApiResponse<T> {
+  final bool success;
+  final String? message;
+  final T? data;
+  final String? code;
+
+  ApiResponse({
+    required this.success,
+    this.message,
+    this.data,
+    this.code,
+  });
+
+  factory ApiResponse.success(T data, [String? message]) {
+    return ApiResponse(
+      success: true,
+      data: data,
+      message: message,
+      code: ResponseCode.success,
+    );
+  }
+
+  factory ApiResponse.fail(String message, [String? code]) {
+    return ApiResponse(
+      success: false,
+      message: message,
+      code: code,
+    );
+  }
+
+  factory ApiResponse.unauthorized(String message) {
+    return ApiResponse(
+      success: false,
+      message: message,
+      code: ResponseCode.unauthorized,
+    );
+  }
+
+  factory ApiResponse.fromJson(
+    Map<String, dynamic> json,
+    T Function(dynamic)? fromJsonT,
+  ) {
+    final code = json['code'] as String? ?? '';
+    final msg = json['msg'] as String? ?? '';
+
+    return switch (code) {
+      ResponseCode.success => _parseSuccess(json, msg, fromJsonT),
+      ResponseCode.unauthorized => ApiResponse.unauthorized(msg),
+      _ => ApiResponse.fail(msg, code),
+    };
+  }
+
+  static ApiResponse<T> _parseSuccess<T>(
+    Map<String, dynamic> json,
+    String msg,
+    T Function(dynamic)? fromJsonT,
+  ) {
+    final data = json['data'];
+    if (fromJsonT != null && data != null) {
+      return ApiResponse.success(fromJsonT(data), msg);
+    }
+    return ApiResponse.success(data as T, msg);
+  }
+
+  bool get isSuccess => success;
+  bool get isUnauthorized => code == ResponseCode.unauthorized;
+}

flutter_monisuo/lib/core/network/dio_client.dart

@@ -1,65 +1,13 @@
 import 'package:dio/dio.dart';
 import '../storage/local_storage.dart';
 import 'api_exception.dart';
+import 'api_response.dart';
 
-/// API 响应模型
-class ApiResponse<T> {
-  final bool success;
-  final String? message;
-  final T? data;
-  final String? code;
-
-  ApiResponse({
-    required this.success,
-    this.message,
-    this.data,
-    this.code,
-  });
-
-  factory ApiResponse.success(T data, [String? message]) {
-    return ApiResponse(
-      success: true,
-      data: data,
-      message: message,
-      code: '0000',
-    );
-  }
-
-  factory ApiResponse.fail(String message, [String? code]) {
-    return ApiResponse(
-      success: false,
-      message: message,
-      code: code,
-    );
-  }
-
-  factory ApiResponse.unauthorized(String message) {
-    return ApiResponse(
-      success: false,
-      message: message,
-      code: '0002',
-    );
-  }
-
-  factory ApiResponse.fromJson(
-    Map<String, dynamic> json,
-    T Function(dynamic)? fromJsonT,
-  ) {
-    final code = json['code'] as String? ?? '';
-    final msg = json['msg'] as String? ?? '';
-
-    if (code == '0000') {
-      final data = json['data'];
-      if (fromJsonT != null && data != null) {
-        return ApiResponse.success(fromJsonT(data), msg);
-      }
-      return ApiResponse.success(data as T, msg);
-    } else if (code == '0002') {
-      return ApiResponse.unauthorized(msg);
-    } else {
-      return ApiResponse.fail(msg, code);
-    }
-  }
+/// 网络配置常量
+class NetworkConfig {
+  static const String baseUrl = 'http://localhost:5010';
+  static const Duration connectTimeout = Duration(seconds: 30);
+  static const Duration receiveTimeout = Duration(seconds: 30);
 }
 
 /// Dio 网络客户端
@@ -67,23 +15,30 @@ class DioClient {
   late final Dio _dio;
 
   DioClient() {
-    _dio = Dio(BaseOptions(
-      baseUrl: 'http://localhost:5010',
-      connectTimeout: const Duration(seconds: 30),
-      receiveTimeout: const Duration(seconds: 30),
-      headers: {
-        'Content-Type': 'application/json',
-      },
-    ));
+    _dio = _createDio();
+    _setupInterceptors();
+  }
 
-    _dio.interceptors.add(_AuthInterceptor());
-    _dio.interceptors.add(LogInterceptor(
-      requestHeader: false,
-      responseHeader: false,
-      error: true,
+  Dio _createDio() {
+    return Dio(BaseOptions(
+      baseUrl: NetworkConfig.baseUrl,
+      connectTimeout: NetworkConfig.connectTimeout,
+      receiveTimeout: NetworkConfig.receiveTimeout,
+      headers: {'Content-Type': 'application/json'},
     ));
   }
 
+  void _setupInterceptors() {
+    _dio.interceptors.addAll([
+      _AuthInterceptor(),
+      LogInterceptor(
+        requestHeader: false,
+        responseHeader: false,
+        error: true,
+      ),
+    ]);
+  }
+
   /// GET 请求
   Future<ApiResponse<T>> get<T>(
     String path, {
@@ -112,7 +67,6 @@ class DioClient {
     }
   }
 
-  /// 处理响应
   ApiResponse<T> _handleResponse<T>(
     Response response,
     T Function(dynamic)? fromJson,
@@ -124,13 +78,39 @@ class DioClient {
     return ApiResponse.fail('响应数据格式错误');
   }
 
-  /// 处理错误
   ApiResponse<T> _handleError<T>(DioException e) {
-    if (e.response?.statusCode == 401) {
-      LocalStorage.clearUserData();
+    if (_isUnauthorized(e)) {
+      _clearUserData();
       return ApiResponse.unauthorized('登录已过期，请重新登录');
     }
-    return ApiResponse.fail(e.message ?? '网络请求失败');
+
+    final message = _getErrorMessage(e);
+    return ApiResponse.fail(message);
+  }
+
+  bool _isUnauthorized(DioException e) {
+    return e.response?.statusCode == 401;
+  }
+
+  void _clearUserData() {
+    LocalStorage.clearUserData();
+  }
+
+  String _getErrorMessage(DioException e) {
+    switch (e.type) {
+      case DioExceptionType.connectionTimeout:
+        return '连接超时，请检查网络';
+      case DioExceptionType.sendTimeout:
+        return '发送超时，请重试';
+      case DioExceptionType.receiveTimeout:
+        return '响应超时，请重试';
+      case DioExceptionType.connectionError:
+        return '网络连接失败';
+      case DioExceptionType.badResponse:
+        return '服务器错误 (${e.response?.statusCode})';
+      default:
+        return e.message ?? '网络请求失败';
+    }
   }
 }
 
@@ -139,7 +119,7 @@ class _AuthInterceptor extends Interceptor {
   @override
   void onRequest(RequestOptions options, RequestInterceptorHandler handler) {
     final token = LocalStorage.getToken();
-    if (token != null && token.isNotEmpty) {
+    if (token?.isNotEmpty == true) {
       options.headers['Authorization'] = 'Bearer $token';
     }
     super.onRequest(options, handler);