Asp.net 如何接收post过来的 json 数据

 1 <%@ WebHandler Language="C#" Class="Handler" %>
 2 using System;
 3 using System.Web;
 4 public class Handler : IHttpHandler 
 5 {
 6     //服务端
 7     public void ProcessRequest (HttpContext context) {
 8         context.Response.ContentType = "application/json";
 9         context.Response.Cache.SetCacheability(HttpCacheability.NoCache);
10         using (var reader = new System.IO.StreamReader(context.Request.InputStream))
11         {
12             String xmlData = reader.ReadToEnd();
13 
14             if (!string.IsNullOrEmpty(xmlData))
15             {
16                          //业务处理
17              }
18         }
19     }
20     public bool IsReusable {
21         get {
22             return false;
23         }
24     }
25 }

 1 
          //客户端
　　　　   private string HttpPost(string Url, string postDataStr)
 2         {
 3             HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);
 4             request.Method = "POST";
 5             request.ContentType = "application/json";
 6             request.ContentLength = Encoding.UTF8.GetByteCount(postDataStr);
 7             Stream myRequestStream = request.GetRequestStream();
 8             StreamWriter myStreamWriter = new StreamWriter(myRequestStream, Encoding.GetEncoding("gb2312"));
 9             myStreamWriter.Write(postDataStr);
10             myStreamWriter.Close();
11             HttpWebResponse response = (HttpWebResponse)request.GetResponse();
12             Stream myResponseStream = response.GetResponseStream();
13             StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));
14             string retString = myStreamReader.ReadToEnd();
15             myStreamReader.Close();
16             myResponseStream.Close();
17             return retString;
18         }

<%@ WebHandler Language="C#" Class="Handler" %>using System;using System.Web;public class Handler : IHttpHandler {        public void ProcessRequest (HttpContext context) {        context.Response.ContentType = "application/json";        context.Response.Cache.SetCacheability(HttpCacheability.NoCache);        using (var reader = new System.IO.StreamReader(context.Request.InputStream))        {            String xmlData = reader.ReadToEnd();
            if (!string.IsNullOrEmpty(xmlData))            {                         //业务处理             }        }    }    public bool IsReusable {        get {            return false;        }    }}