MAP 和 JSON 格式互转

import "dart:convert";
json.encode(map) // map 转 json
json.decode(json) //  json 转 map

Dio 请求接口 第三方

异步方式可用 .then 和 async / await

配置

dependencies:
    dio: ^4.0.6

import 'package:dio/dio.dart';
// 获取数据
var response = await Dio().get('https://www.baidu.com',queryParmeters:{'name':"zhangsan"});
    print(response.data);
    print(response.data is Map);
}
// 提交数据
var response = await Dio().post('https://www.baidu.com',data:{'name':"zhangsan"});
    print(response.data);
    print(response.data is Map);
}
// 更新数据
var response = await Dio().put('https://www.baidu.com',data:{'name':"zhangsan"});
    print(response.data);
    print(response.data is Map);
}
// 删除数据
var response = await Dio().delete('https://www.baidu.com',queryParmeters:{'name':"zhangsan"});
    print(response.data);
    print(response.data is Map);
}