参考链接 http://blog.sina.com.cn/s/blog_502b92330102w7pc.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Bootstrap 实例</title>
<script src="http://libs.baidu.com/jquery/1.8.3/jquery.min.js"></script>
<script src="http://libs.cncdn.cn/jquery-ajaxtransport-xdomainrequest/1.0.3/jquery.xdomainrequest.min.js"></script>
</head>
<body>
</body>
<script>
var ur = ‘http://139.129.222.142/happyclass/restfulapi/getClass‘;
$.ajax({
url: ur
, type: "get"
, success: function( data, textStatus, jqXHR ){
alert("返回的数据" + data);
}
, error: function(jqXHR, textStatus, errorMsg){
alert("请求失败：" + errorMsg);
}
});
</script>
</html>
原文：http://www.cnblogs.com/WhiteHorseIsNotHorse/p/6412873.html