flutter Dio发送post请求

一，导包

dependencies:flutter:sdk: flutterdio: ^4.0.6

二，请求、解析、刷新渲染

import 'dart:convert';import 'package:dio/dio.dart';
import 'package:flutter/material.dart';main() {runApp(const MaterialApp(home: H(),));
}class H extends StatefulWidget {const H({super.key});@overrideState<H> createState() => _HState();
}class _HState extends State<H> {String _resStr = "";@overrideWidget build(BuildContext context) {return Scaffold(appBar: AppBar(title: const Text("抓包测试"),),body: Center(child: Text(_resStr,style: const TextStyle(fontSize: 30),),),floatingActionButton:FloatingActionButton(onPressed: _postRequestFunction));}void _postRequestFunction() async {Dio dio = Dio();FormData formData = FormData.fromMap({"sourceText": "Who are you?"});String url = "https://api.oioweb.cn/api/txt/QQFanyi";Response response = await dio.post(url, data: formData);setState(() {_resStr =json.decode(response.toString())["result"]["targetText"].toString();});}
}

三，效果

点击按钮，屏幕中心出现对应的翻译结果