Flutter http响应正文为空[重复]

Question

我想从此 API“https://fantasy.premierleague.com/api/bootstrap-static/”中检索数据，但每次我发出 http.get() 请求时，响应的正文都是空的试试我的代码，看看问题出在颤振还是我身上

前段时间我已经遇到过这个问题，这段代码对我不起作用，但在其他人尝试时运行良好，我在执行“Flutter 升级后问题得到解决"但问题又出现了，我不明白问题出在哪里，这让我很着急。

代码：

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

void main() {
  runApp(
    MaterialApp(
      debugShowCheckedModeBanner: false,
      home: MyHomePage(),
    ),
  );
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key}) : super(key: key);
  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  Future<String> getData() async {
    http.Response response = await http
        .get(
      "https://fantasy.premierleague.com/api/bootstrap-static/",
    )
        .then((value) {
      print(value.body.toString());
      return value;
    });
    var data = response.body;
    print(data); //Shows nothing
    print(data.isEmpty); // "TRUE"
    print(data.length); // "0"
    return response.body;
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          getData();
        },
      ),
      body: Center(
        child: Text("Hello World"),
      ),
    );
  }
}

Answer 1

您应该使用async await 或then。 将您的代码更改为此。

Future<String> getData() async {
  http.Response response = await http.get(
    "https://fantasy.premierleague.com/api/bootstrap-static/",
  );
  return response.body;
}