asp.net和Jquery中详细解析json数据格式!(有实例)

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JSON格式:
比如学生有学号,姓名,性别等。
用json表示则为:

{"studno":"11111","studname":"wwww","studsex":"男"}(各个字段都是字符型)
这代表一个学生的信息。
如果多个呢?
[{"studno":"122222","studname":"wwww","studsex":"男"},
{"studno":"11111","studname":"xxxx","studsex":"男"},
{"studno":"33333","studname":"ssss","studsex":"男"}]
这就是json格式。
======================================================================================

新建一个 一般处理程序文件 Handler1.ashx然后在Handler1.ashx.cs 里面写如下代码  public void ProcessRequest(HttpContext context)        {            context.Response.ContentType = "text/plain";            string json = "[{'user_id':'123'}]";            context.Response.Write(json);        }前台 用ajax 访问 Handler1.ashx 就可以得到json 数据了建议 用jquery 的ajax 方法$.ajax({   type: "POST",   url: "Handler1.ashx",   data: "name=John&location=Boston",   success: function(msg){     alert( "Data Saved: " + msg );   }});
===========================================================asp.net中Jquery解析json数据格式

aspx前台页面代码如下:

    <script language="javascript" type="text/javascript">
          function  TestAjax(){
            $.ajax({
                    url: "www.2cto.com/", //ajax请求的路径
                    dataType: "json",
                    data: "id=150"+"&r=" + Math.random(), //请求的参数
                    type: "post",
                    success: function (data) {
                        alert(data.name); //弹出data对象的name属性值
                    }
                });
          }
    </script>

 

后台.cs文件如下:

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            if (Request.QueryString["id"] != null)
            {
                string id = Request.QueryString["id"].ToString();
                Context.Response.ContentType = "text/plain";
                //构建的json数据(只有一条数据可以直接用{},如果有多条数据需要用[],前台用索引访问) 例如jsonstr = "[{\"pricelist\":\"" + temm + "\",\"jianye\":\"" + jianye + "\",\"sigleprice\":\"" + oneytempprice + "\",\"jianyetotalprice\":\"" + jianyetotalprice + "\"}]";
                string data = "{\"id\":\"" + id + "\",\"name\":\"测试内容 \",\"sigleprice\":\"120.0 \",\"jianyetotalprice\":\"123.2\"}";
                Context.Response.Write(data);
                Context.Response.End();
            }
        }
    }

===========================================================asp.net 集合传json数据格式
using System;
using System.Data;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Web.Script.Serialization; //一定要引用的空间
/// <summary>
///JOSN 的摘要说明
/// </summary>
public class JOSN
{
 public JOSN()
 {
     
 }
    public  string Tojson(object obj) {
        JavaScriptSerializer serillizer = new JavaScriptSerializer();
        return serillizer.Serialize(obj);
    }
    public  string Tojson(object obj, int recursiondepth)
    {
        JavaScriptSerializer serialize= new JavaScriptSerializer();
        serialize.RecursionLimit = recursiondepth;
        return serialize.Serialize(obj);
    }
}


下面是使用方法


JOSN josn = new JOSN(); //先实倒化


public string GetJosn() {
            List<Class1> list = new List<Class1>();
            Class1 c = new Class1();
            c.ID = "0";
            c.Value = "weping";
            list.Add(c);


            c = new Class1();
            c.ID = "1";
            c.Value = "weping1";
            list.Add(c);


            c = new Class1();
            c.ID = "2";
            c.Value = "weping2";
            list.Add(c);


            c = new Class1();
            c.ID = "3";
            c.Value = "weping3";
            list.Add(c);


            c = new Class1();
            c.ID = "4";
            c.Value = "weping4";
            list.Add(c);


            c = new Class1();
            c.ID = "5";
            c.Value = "weping5";
            list.Add(c);


            c = new Class1();
            c.ID = "6";
            c.Value = "weping6";
            list.Add(c);


            c = new Class1();
            c.ID = "7";
            c.Value = "weping7";
            list.Add(c);


            return josn.Tojson(list);//这样就返回json数据了
        }

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