基本完成

lib/api/network/interceptor.dart

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+import 'package:dio/dio.dart';
+import 'package:flutter_easyloading/flutter_easyloading.dart';
+
+import '../../providers/app_store.dart';
+import '../dto/base_dto.dart';
+
+///请求拦截器
+void onRequest(
+  RequestOptions options,
+  RequestInterceptorHandler handler,
+) async {
+  String token = await AppStore.getToken();
+  options.headers['Authorization'] = 'Bearer $token';
+  return handler.next(options);
+}
+
+///响应拦截器
+void onResponse(
+  Response<dynamic> response,
+  ResponseInterceptorHandler handler,
+) {
+  var apiResponse = ApiDto.fromJson(response.data);
+  if (apiResponse.code == 1) {
+    response.data = apiResponse.data;
+    return handler.next(response);
+  } else {
+    showError(apiResponse.message);
+    handler.reject(
+      DioException(
+        requestOptions: response.requestOptions,
+        response: response,
+        error: {'code': 0, 'message': apiResponse.message},
+      ),
+    );
+  }
+}
+
+///错误响应
+void onError(
+  DioException e,
+  ErrorInterceptorHandler handler,
+) {
+  var title = "";
+  if (e.type == DioExceptionType.connectionTimeout) {
+    title = "请求超时";
+  } else if (e.type == DioExceptionType.badResponse) {
+    if (e.response?.statusCode == 404) {
+      title = "接口404不存在";
+    } else {
+      title = "500";
+    }
+  } else if (e.type == DioExceptionType.connectionError) {
+    title = "网络连接失败";
+  } else {
+    title = "异常其他错误";
+  }
+  showError(title);
+  handler.next(e);
+}
+
+///显示错误信息
+void showError(String message) {
+  EasyLoading.showError(message);
+}

lib/api/network/request.dart

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+import 'package:dio/dio.dart';
+
+import '../../config/env.dart';
+import 'interceptor.dart';
+
+class Request {
+  static final Request _instance = Request._internal();
+  static Dio _dio = Dio();
+
+  //返回单例
+  factory Request() {
+    return _instance;
+  }
+
+  //初始化
+  Request._internal() {
+    //创建基本配置
+    final BaseOptions options = BaseOptions(
+      baseUrl: Config.baseUrl(),
+      connectTimeout: const Duration(seconds: 30),
+      receiveTimeout: const Duration(seconds: 30),
+    );
+
+    _dio = Dio(options);
+
+    _dio.interceptors.add(
+      InterceptorsWrapper(
+        onRequest: onRequest,
+        onResponse: onResponse,
+        onError: onError,
+      ),
+    );
+  }
+
+  ///get请求
+  Future<T> get<T>(String path, [Map<String, dynamic>? params]) async {
+    var res = await _dio.get(path, queryParameters: params);
+    return res.data;
+  }
+
+  ///post请求
+  Future<dynamic> post(String path, Object? data) async {
+    var res = await _dio.post(path, data: data);
+    return res.data;
+  }
+}

lib/api/network/safe.dart

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+import 'package:dio/dio.dart';
+
+/// 网络请求的错误处理封装
+Future<T> safeRequest<T>(
+  Future<T> request, {
+  void Function(DioException error)? onError,
+}) async {
+  try {
+    return await request;
+  } on DioException catch (e) {
+    onError?.call(e); // 额外 hook
+    rethrow; // 继续往上传
+  }
+}