Ajax跨域请求ashx文件与Webservice文件

前台页面：
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication2.WebForm1" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title></title>
    <script src="jquery-1.7.1.js"></script>
    <script type="text/javascript">
        jQuery(function () {
            jQuery.ajax({
                url: "http://localhost:1203/Handler1.ashx?callback=?",
                //jsonpCallback:callback,
                dataType: "jsonp",
                data: { name: "likong" },
                success: function (result) {
                    window.alert("姓名：" + result.name + "， 性别：" + result.gender);

                }

        })

        function callback(){
            window.alert("回调成功！");
        
        }

        })
    </script>
</head>
<body>
</body>
</html>
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