添加依赖

  1. dio: ^4.0.3

创建工具类

  1. import 'package:dio/dio.dart';
  3. class NetCore {
  4.   static final NetCore _instance = NetCore.internal();
  5.   late Dio _dio;
  7.   factory NetCore() {
  8.     return _instance;
  9.   }
  11.   NetCore.internal() {
  12.     initNetConfig();
  13.   }
  15.   void initNetConfig() {
  16.     //默认配置
  17.     var options = BaseOptions(
  18.       baseUrl: "",
  19.       connectTimeout: 5000,
  20.       receiveTimeout: 3000,
  21.     );
  22.     _dio = Dio(options);
  23.   }
  25.   Future<Response> get(String url) async {
  26.     Response response = await _dio.get(url);
  27.     return response;
  28.   }
  30. }