初始化

lib/request/dto/base_dto.dart

@@ -0,0 +1,20 @@
+class ApiDto<T> {
+  final int code;
+  final String message;
+  final T data;
+
+  ApiDto({
+    required this.code,
+    required this.message,
+    required this.data
+  });
+
+
+  factory ApiDto.fromJson(Map<String, dynamic> json) {
+    return ApiDto<T>(
+      code: json['code'],
+      message: json['message'],
+      data: json['data'],
+    );
+  }
+}

lib/request/network/interceptor.dart

@@ -0,0 +1,51 @@
+import 'package:dio/dio.dart';
+
+import '../dto/base_dto.dart';
+
+
+///请求拦截器
+void onRequest(
+  RequestOptions options,
+  RequestInterceptorHandler handler,
+) {
+  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) {
+    handler.next(response);
+  } else {
+    handler.reject(
+      DioException(
+        requestOptions: response.requestOptions,
+        response: response,
+        error: {'code': 0, 'message': apiResponse.message},
+      ),
+    );
+  }
+}
+
+///错误响应
+void onError(
+  DioException e,
+  ErrorInterceptorHandler handler,
+) {
+  if (e.type == DioExceptionType.connectionTimeout) {
+    print("请求超时");
+  } else if (e.type == DioExceptionType.badResponse) {
+    if (e.response?.statusCode == 404) {
+      print("接口404不存在");
+    } else {
+      print("500");
+    }
+  } else if (e.type == DioExceptionType.connectionError) {
+    print("网络连接失败");
+  } else {
+    print("接口请求异常报错");
+  }
+}

lib/request/network/request.dart

@@ -0,0 +1,43 @@
+import 'package:dio/dio.dart';
+import 'package:app/config/config.dart';
+
+import 'interceptor.dart';
+
+class Request {
+  static Dio _dio = Dio();
+
+  //返回单例
+  factory Request() {
+    return Request._instance();
+  }
+
+  //初始化
+  Request._instance() {
+    //创建基本配置
+    final BaseOptions options = BaseOptions(
+      baseUrl: Config.baseUrl(),
+      connectTimeout: const Duration(seconds: 10),
+      receiveTimeout: const Duration(seconds: 10),
+    );
+
+    _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<T> post<T>(String path, Object? data) async {
+    var res = await _dio.post(path, data: data);
+    return res.data;
+  }
+}