Flutter简单http转JavaBean

最新推荐文章于 2025-05-28 20:20:56 发布

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最新推荐文章于 2025-05-28 20:20:56 发布

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文章标签：移动开发 java json

原文链接：https://juejin.im/post/5c6ba48051882561dd7b6951

本文介绍如何在Flutter项目中使用Dio库进行HTTP请求，并结合json_serializable实现JavaBean类的自动生成，简化JSON数据解析过程。通过具体代码示例，展示从配置依赖、生成数据模型到实际请求数据的完整流程。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

首先pubspec.yaml在dependencies:

flutter:

sdk: flutter

下导入

dio: 1.0.9

json_serializable: ^2.0.0

json_annotation: ^2.0.0

cupertino_icons: ^0.1.2

build_runner: ^1.1.2

在控制台输入

flutter packages get

利用 jsonformat4flutter

工具生成JavaBean，该工具下载地址为

https://github.com/debuggerx01/JSONFormat4Flutter/releases

3. JavaBean

如

import 'dart:convert' show json;

class Tests {

String origin;

Tests.fromParams({this.origin});

factory Tests(jsonStr) => jsonStr == null ? null : jsonStr is String ? new Tests.fromJson(json.decode(jsonStr)) : new Tests.fromJson(jsonStr);

Tests.fromJson(jsonRes) {
origin = jsonRes['origin'];
}

@override
String toString() {
return '{"origin": ${origin != null?'${json.encode(origin)}':'null'}}';
}
}

4.import 'package:dio/dio.dart';
import 'package:flutter/material.dart';
import 'Tests.dart';
import 'HistoryListByDate.dart';

//import 'package:http/http.dart' as http;
void main() {
runApp(new MaterialApp(
home: new HomePage(),
));
}

class HomePage extends StatefulWidget {
@override
HomePageState createState() => new HomePageState();
}

class HomePageState extends State<HomePage> {
List data;

void getHttp() async {
try {
Response response;
response = await Dio().get("https://httpbin.org/ip");
Tests mTests = new Tests.fromJson(response.data);
print("==mTests====" + mTests.toString());
} catch (e) {
print("====e==" + e.toString());
}
}

@override
Widget build(BuildContext context) {
getHttp();
return new Scaffold(
body: new Center(
child: new RaisedButton(
child: new Text("Get data"),
onPressed: getHttp,
),
),
);
}
}