asp.net和Jquery中详细解析json数据格式!（有实例）

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

}