.Net+JQuery.Ajax跨站请求获取数据

 1 /**
 2  * 贵金属、外汇及原油的价格
 3  */
 4 function getDDE(code,id) {
 5     $.ajax({
 6         type: "POST",
 7         url: "http://market.gs9999.com/tools/submit_ajax.ashx?action=metal_realtime&t=" + Math.random(),
 8         timeout: 20000,
 9         data: {
10             code: code
11         },
12         dataType: "json",
13         success: function (data) {
14             alert(data);
15         }
16     });
17 }

 1 /// <summary>
 2     /// AJAX提交处理
 3     /// </summary>
 4     public class submit_ajax : IHttpHandler, IRequiresSessionState
 5     {
 6         public void ProcessRequest(HttpContext context)
 7         {
 8             //允许跨站，指定域名：http://www.gs9999.com，若值为"*"，则允许所有的网站访问。
 9             context.Response.AddHeader("Access-Control-Allow-Origin", "http://www.gs9999.com");
10           
11             //取得处事类型
12             string action = GsRequest.GetQueryString("action");
13 
14             switch (action)
15             {
16                 case "metal_realtime": //贵金属实时
17                     metal_realtime(context);
18                     break;
19                 default:
20                     context.Response.Write("{\"msg\": 0, \"msgbox\": \"参数传输有误！\"}");
21                     break;
22             }
23         }
24 
25         public bool IsReusable
26         {
27             get
28             {
29                 return false;
30             }
31         }
32     }