Ajax跨域调用的范例

Ajax的写法：

$(function() {
		var oid = GetRequest("OID");
		//oid = "gh_fbcc787818d3";
		var openid = GetRequest("OPENID");
		//openid = "oVPTzt1-KZwUAP5xw8Vv1CaofMbQ";
		if (oid != "") {
			$.ajax({
				url : "http://it.livzon.cn/WXManage/WXAjax.ashx",
				type : "get",
				async : false,
				// dataType: "text",
				dataType : "jsonp",
				jsonp : "callbackparam",//服务端用于接收callback调用的function名的参数
				jsonpCallback : "success_jsonpCallback",//callback的function名称
				data : {
					flag : "GETWXUSERBYWXOIDANDOPENID",
					oid : oid,
					openid : openid
				},
				success : function(response) {
					response = eval(response);
					var str = "";
					if (response["name"] != "") {
						$("#username").val(response["name"]);
						$("#password").val(response["pwd"]);
						// $("#password").val("1111");
					}
					//$('#submit').click();
				},
				error : function() {
					alert("获取微信用户信息失败！");
				}
			});
		}
	});

 后台代码的处理：

  string openid = context.Request["openid"];
                string oid = context.Request["oid"];
                List<WXUserModel> list = GetWXUserByWXIDAndOpenIDAndOID(0, 0, openid, oid);
                context.Response.ContentType = "text/plain";
                String callbackFunName = context.Request["callbackparam"];
                if (list.Count > 0)
                {
                    byte[] bytes = Convert.FromBase64String( list[0].ADPASSWORD );
                    string pwd = Encoding.Default.GetString(bytes);
                    context.Response.Write(callbackFunName + "({ \"name\": \"" + list[0].ADACCOUNT + "\", \"pwd\": \"" + pwd + "\"})");
                }
                else {

                    context.Response.Write(callbackFunName + "({ \"name\": \"  \", \"pwd\": \" \"})");
                }