AJAX到Web方法不返回JSON [英] AJAX to web method not returning JSON

问题描述

我从我的js文件使用AJAX调用aspx页面的Web方法。我已经设置方法为[的WebMethod]和页面从System.Web.Ui.Page类继承。它仍然不JSON格式回到我呼吁AJAX功能。

I am calling a web method in aspx page from my js file using AJAX. I have set the method to be [WebMethod] and the page inherits from System.Web.Ui.Page class. Still it does not return the JSON format to my calling ajax function.

下面是AJAX调用的js文件：

Here is the AJAX call in js file:

         $.ajax({
                 type: "POST",
                 url: "/WebServiceUtility.aspx/CustomOrderService",
                 data: "{'id': '2'}",
                 contentType: "application/json; charset=utf-8",
                 dataType: "json",
                 success: function (message) {
                     ShowPopup(message);
                 }
               });
         function ShowPopup(result) {
             if (result.d != "") {
                 request=result.d;
             }
         }

这里是Web方法：

And here is the web method:

using System;
using System.IO;
using System.Net;
using System.Text;
using System.Web.Services;

namespace SalesDesk.Global
{
public partial class WebServiceUtility : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }

        [WebMethod]
        public string CustomOrderService(string id)
        {
            string result;
            // code logic which sets the result value
            result="some value";

            return result;
        }

    }
}

当我preSS F12在Firefox浏览器，并检查网络的请求/响应来电，我没有看到JSON标签都没有。相反，我看到的HTML标签。

When I press F12 in Firefox browser and check the Request / Response in Network calls, I do not see the JSON tab at all. Instead I see HTML tab.

我是否需要专门设置任何响应头？究竟我在这里丢失？

Do I need to set any response headers specifically? What exactly am I missing here?

编辑：找到一个解决方案。归根结底，什么工作为$ .getJSON（）与一个回调函数是成功的方法调用及以下在网页中的code

Found a solution. Ultimately, what worked is $.getJSON() call with a callback function as success method and below is the code in web page

        result = "...";
        Response.Clear();
        Response.ContentType = "application/json";
        Response.Write(result);
        Response.Flush();
        Response.End();

感谢所有为您的宝贵建议。

Thanks all for your valuable suggestions.

推荐答案

试试这个

    [WebMethod]
    [ScriptMethod(ResponseFormat = ResponseFormat.Json)]
        public string CustomOrderService(string id)
        {
            string result;
            // code logic which sets the result value
            result="some value";

            return result;
        }

这篇关于AJAX到Web方法不返回JSON的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！