public class PostParameters{// public string Name { get; set; }public Stream FStream { get; set; }public string Path { get; set; }}

using System;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using Newtonsoft.Json;namespace AshxRequestTest
{internal class Program{private static void Main(string[] args){PostJson("http://uploadimg.zhtx.com/UploadImagHandle.ashx", new PostParameters{Path = "hahah"});}private static void PostJson(string uri, PostParameters postParameters){string postData = JsonConvert.SerializeObject(postParameters); //将对象序列化byte[] bytes = Encoding.UTF8.GetBytes(postData); //转化为数据流var httpWebRequest = (HttpWebRequest) WebRequest.Create(uri); //创建HttpWebRequest对象httpWebRequest.Method = "POST";httpWebRequest.ContentLength = bytes.Length;httpWebRequest.ContentType = "text/xml";using (Stream requestStream = httpWebRequest.GetRequestStream()){requestStream.Write(bytes, 0, bytes.Count()); //输出流中写入数据
            }var httpWebResponse = (HttpWebResponse) httpWebRequest.GetResponse(); //创建响应对象if (httpWebResponse.StatusCode != HttpStatusCode.OK) //判断响应状态码
            {string message = String.Format("POST failed. Received HTTP {0}", httpWebResponse.StatusCode);throw new ApplicationException(message);}}}
}

using System;
using System.IO;
using System.Text;
using System.Web;
using Newtonsoft.Json;namespace HttpWebClientTest
{/// <summary>///     UploadImagHandle 的摘要说明///     create by peng.li 2015-5-30/// </summary>public class UploadImagHandle : IHttpHandler{public void ProcessRequest(HttpContext context){context.Response.ContentType = "text/xml";HandleMethod();//  context.Response.Write("Hello World");
        }public bool IsReusable{get { return false; }}private static void HandleMethod(){HttpContext httpContext = HttpContext.Current;Stream httpRStream = httpContext.Request.InputStream;var bytes = new byte[httpRStream.Length];httpRStream.Read(bytes, 0, bytes.Length); //读取请求流对象string req = Encoding.Default.GetString(bytes); //转换成字符串对象（这个字符串是json格式的）var postParameters = JsonConvert.DeserializeObject<PostParameters>(req); //（反序列化）int res = UploadImage(postParameters);httpContext.Response.Write(res);}public static int UploadImage(PostParameters postParameters){string path = "E:/" + postParameters.Path;try{if (!Directory.Exists(Path.GetDirectoryName(path))){Directory.CreateDirectory(Path.GetDirectoryName(path));}File.WriteAllBytes(path, postParameters.FileByte);return 1;}catch (Exception){return 0;}}}
}