完整版见https://jadyer.github.io/2012/03/09/cross-domain-ajax-request/
直接上代码吧,介绍方面的东西都在代码注释里
首先是使用FlyJSONP实现跨域的异步请求
<%@ page language="java" pageEncoding="UTF-8"%> <script type="text/javascript" src="js/flyjsonp.min.js"></script> <script type="text/javascript"> function getJFBCustomState(){ FlyJSONP.init({debug: true}); //初始化FlyJSONP的实例,参数debug可设置为true或false FlyJSONP.post({ url: 'http://123.125.**.***:8088/ecpaycus/web/getCustomizeByPhoneNo', parameters: {phoneNo:'18601148104'}, success: function(data){ var customState = data.customState; alert('服务器返回结果为:' + customState); } /* success: function(data){ var customState = data.customState; alert('服务器返回结果为:' + customState); }, error: function(errorMsg){ alert('22'); console.log(errorMsg); } */ }); } </script> <span style="color:blue; text-decoration:underline; cursor:pointer;" οnclick="getJFBCustomState();">点此完成定制</span> <%-- ========================================================================================== FlyJSONP 主页:http://alotaiba.github.com/FlyJSONP/ 概述:FlyJSONP是一个应用JSONP实现跨域请求的相当轻量级的JavaScript类库 FlyJSONP不依赖于任何JavaScript框架,只需设置一些参数便能够用它实现跨域的POST和GET请求 补充:本示例在IE9.0.8112.16421和FireFox9.0.1上测试,均通过 另外,我是在这个网站发现它的-->http://site518.net/javascript-cross-domain-request/ 用法:上面是客户端代码,下面是服务端代码 String phoneNo = request.getParameter("phoneNo")); //TODO ... response.setContentType("application/json; charset=UTF-8"); response.getWriter().print("{customState: 'hasCustomized'}"); 注意:服务端输出给客户端时,输出的必须是json字符串,否则客户端无法接收 ========================================================================================== --%>
<%@ page language="java" pageEncoding="UTF-8"%>
<script type="text/javascript" src="js/jquery-1.7.1.min.js"></script>
<script type="text/javascript">
$(function(){
$('#validateCustom').click(function(){
$.getJSON('http://123.125.**.***:8088/ecpaycus/web/getCustomizeByPhoneNo?jsoncallback=?&phoneNo=18601148104',
function(json){
var customState = json.customState;
alert('服务端返回结果为:' + customState);
}
);
});
});
</script>
<span style="color:blue; text-decoration:underline; cursor:pointer;" id="validateCustom">点此完成定制</span>
<%--
==========================================================================================
说明:本示例在IE9.0.8112.16421和FireFox9.0.1上测试,均通过
用法:上面是客户端代码,下面是服务端代码
String phoneNo = request.getParameter("phoneNo"));
//TODO ...
String jsoncallback = request.getParameter("jsoncallback");
String jsonReturn = "{customState: 'hasCustomized'}";
response.setContentType("application/json; charset=UTF-8");
response.getWriter().print(jsoncallback + "(" + jsonReturn + ")");
注意:服务端输出给客户端时,输出的必须是json字符串,否则客户端无法接收
且,客户端请求时,必须提供回调函数名,并以参数形式放到请求的URL后面
服务端输出给客户端时,必须将接收到的回调函数名字放到json字符串的前面
==========================================================================================
--%>