Flutter中的http网络请求，值得一看

dependencies:
  flutter:
    sdk: flutter
  http: ^0.13.3 # 确保使用最新版本

import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('HTTP请求示例'),
        ),
        body: Center(
          child: FutureBuilder<String>(
            future: fetchData(),
            builder: (context, snapshot) {
              if (snapshot.hasData) {
                return Text(snapshot.data!);
              } else if (snapshot.hasError) {
                return Text('出现错误：${snapshot.error}');
              }
              return CircularProgressIndicator();
            },
          ),
        ),
      ),
    );
  }

  Future<String> fetchData() async {
    final response = await http.get(Uri.parse('https://jsonplaceholder.typicode.com/posts/1'));
    if (response.statusCode == 200) {
      return response.body;
    } else {
      throw Exception('Failed to load post');
    }
  }
}