跨域jquery获取 [英] cross domain jquery get
问题描述
我看到了一些使用 ajax 进行跨域的示例，但它不起作用.
I saw some examples of cross domain with ajax but it doesn't work.
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="fr" lang="fr">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
</head>
<body>
<script type="text/javascript" >
$(document).ready(function () {
var url = "http://api.twitter.com/1/statuses/user_timeline.json?screen_name=AssasNet&include_rts=1";
$.get(url, function (data) {
console.log(data)
alert(data);
});
});
</script>
</body>
</html>
我在 chrome 上尝试并给出以下错误:
I try on chrome and the following error is given:
XMLHttpRequest cannot load http://api.twitter.com/1/statuses/user_timeline.json?screen_name=AssasNet&include_rts=1. Origin null is not allowed by Access-Control-Allow-Origin.
推荐答案
你不能使用 $.get 因为它会执行一个 ajax 调用，这将是跨域的，因此被同源政策，并且您尝试访问的 Twitter API 不支持 跨源资源共享(如果有，则不允许 origin null 或 http://jsbin.com，这是我试过的).
You can't use $.get because that does an ajax call, which will be cross-origin and thus blocked by the Same Origin Policy, and the Twitter API you're trying to access doesn't support Cross-Origin Resource Sharing (or if it does, it doesn't allow either origin null or http://jsbin.com, which is the one I tried).
API 确实支持 JSONP(这不是真正的 ajax 调用)，所以只需更改$.get 到 $.ajax 指定 JSONP 作品:
The API does support JSONP (which is not a true ajax call), though, so just changing the $.get to an $.ajax specifying JSONP works:
$.ajax({
url: url,
dataType: "jsonp",
success: function (data) {
console.log(data)
alert(data);
}
});
这篇关于跨域jquery获取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！
