JQuery 跨域访问

客户端

 

$.ajax({
	async:false,
	url: "http://127.0.0.1:8080/n/adservice.action",
        type:"GET",
        dataType:"jsonp",
        jsonp: 'jsoncallback',
        data: {"method":"getAd", "keyword": keyword},
	success: function (json) {
	    alert(json.msg);
	}, 
        complete:function(){
        }
    });

 注意：

 

async必须为false

dateType必须为jsonp

必须有jsonp

 

请求为 http://127.0.0.1:8080/n/adservice.action?jsoncallback=jQuery1900945633552968502_1365328140195&method=getAd&keyword=asd

 

服务器端

String returnJsonStr = .......
response.setContentType("text/json;charset=utf-8");
String str = request.getParameter("jsoncallback");
String returnJsonStr = str + "(" + returnJson.toString() + ")";
response.getWriter().write(returnJsonStr);
response.getWriter().flush();

 

服务器端的json类似为

jQuery19002640575354453176_1365328583833({"succ":0,"msg":"操作成功"})

 

转载自http://blog.csdn.net/shendeguang/article/details/8169917