flutter dio 网络封装。记录

import 'package:dio/dio.dart';
import 'config.dart';
 
class HttpRequest {
  static final BaseOptions baseOptions = BaseOptions(
      baseUrl: HttpConfig.baseURL, connectTimeout: HttpConfig.timeout);
  static final Dio dio = Dio(baseOptions);
 
  static Future<T> request<T>(String url, {
                      String method = "get",
                      Map<String, dynamic> params,
                      Interceptor inter}) async {
    // 1.创建单独配置
    final options = Options(method: method);
 
    // 全局拦截器
    // 创建默认的全局拦截器
    Interceptor dInter = InterceptorsWrapper(
      onRequest: (options) {
        print("请求拦截");
        return options;
      },
      onResponse: (response) {
        print("响应拦截");
        return response;
      },
      onError: (err) {
        print("错误拦截");
        return err;
      }
    );
    List<Interceptor> inters = [dInter];
 
    // 请求单独拦截器
    if (inter != null) {
      inters.add(inter);
    }
 
    // 统一添加到拦截器中
    dio.interceptors.addAll(inters);
 
    // 2.发送网络请求
    try {
      Response response = await dio.request(url, queryParameters: params, options: options);
      return response.data;
    } on DioError catch(e) {
      return Future.error(e);
    }
  }
}

config.dart

class HttpConfig {
  static const String baseURL = "your base url";
  static const int timeout = 10000;
}

 使用

static Future> getData() async {
  // 1.发送网络请求
  final url = "/getData";
  final result = await HttpRequest.request(url);

  // 2.json转modal
  final mealArray = result["data"];
  List<数据类型> meals = [];
  for (var json in mealArray) {
    meals.add(数据类型.fromJson(json));
  }
  return meals;
}