如何向Flutter Web中发出HTTP请求 [英] How to make HTTP request to In Flutter Web

问题描述

我正在尝试在颤抖的网络上动手.我尝试使用http包将我创建的简单Flutter Web应用程序连接到mysql数据库和localhost.但是我没有从请求方法返回任何数据.当我尝试打印出 snaphot.error 时，我得到了: XMLHttpRequest error .我在 FutureBuilder()

I was trying my hands on flutter web. I tried to connect a simple flutter web app I created to mysql database and localhost using the http package. However I dont get any data returned from the request method. When I tried to print out snaphot.error I got this: XMLHttpRequest error. I have this method in a FutureBuilder()

getMethod()async{
  String theUrl = 'https://localhost/fetchData.php';
  var res = await http.get(Uri.encodeFull(theUrl),headers: {"Accept":"application/json"});
  var responsBody = json.decode(res.body);
  print(responsBody);
  return responsBody;

}

推荐答案

您还可以像下面这样将以下代码添加到您的php文件中:

You can also Add the code below to your php file like so:

<?php
require('connection.php');
header("Access-Control-Allow-Origin: *");
....
code goes here
....
?>

我在LocalHost上进行了尝试，并且有效

I Tried this on LocalHost and it worked

这篇关于如何向Flutter Web中发出HTTP请求的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！