用HttpListener做web服务器，简单解析post方式过来的参数、上传的文件

public  class AdvertisementSource : IDisposable
    {
        HttpListener httpListener;
         bool stopped;

         #region 构造和析构

         // ==

         #region IDisposable
        [System.Diagnostics.DebuggerBrowsable(System.Diagnostics.DebuggerBrowsableState.Never)]
         int disposedFlag;

        ~AdvertisementSource()
        {
            Dispose( false);
        }

         ///   <summary>
         ///  释放所占用的资源
         ///   </summary>
         public  void Dispose()
        {
            Dispose( true);
            GC.SuppressFinalize( this);
        }

         ///   <summary>
         ///  获取该对象是否已经被释放
         ///   </summary>
        [System.ComponentModel.Browsable( false)]
         public  bool IsDisposed
        {
             get
            {
                 return disposedFlag !=  0;
            }
        }

         #endregion

         protected  virtual  void Dispose( bool disposing)
        {
             if (System.Threading.Interlocked.Increment( ref disposedFlag) !=  1)  return;
             if (disposing)
            {
                httpListener.Stop();
            }
             // 在这里编写非托管资源释放代码
        }

         #endregion

         public  void Initialize()
        {
            httpListener =  new HttpListener();
            httpListener.Prefixes.Add( string.Format( " http://*:{0}/AdSource/ ",  8080));
            httpListener.Start();
            httpListener.BeginGetContext(GetHttpContextCallback,  null);

        }       
        
         public  void GetHttpContextCallback(IAsyncResult iar)
        {
             if (stopped)  return;
             var context = httpListener.EndGetContext(iar);
            httpListener.BeginGetContext(GetHttpContextCallback,  null);
             string endPoint = context.Request.RemoteEndPoint.ToString();
             int spIndex = endPoint.IndexOf( " : ");
            endPoint = endPoint.Substring( 0, spIndex);
           
             using (HttpListenerResponse response = context.Response)
            {

　　　　　　　　　//get 的方式在如下解析即可得到客户端参数及值
                 // string userName = context.Request.QueryString["userName"];
                 // string password = context.Request.QueryString["password"];
                 // string suffix = context.Request.QueryString["suffix"];
                 // string adType = context.Request.QueryString["adtype"]; // 文字,图片,视频

             
                
                 if (!context.Request.HasEntityBody) // 无数据
                {
                    response.StatusCode =  403;
                     return;
                }

                 string userName =  "";
                 string password =  "";
                 string suffix =  "";
                 string adType =  "";
               //post 的方式有文件上传的在如下解析即可得到客户端参数及值

                HttpListenerRequest request = context.Request;                
                 if (request.ContentType.Length >  20 &&  string.Compare(request.ContentType.Substring( 0,  20),  " multipart/form-data; ",  true) ==  0)
                {
                    List<Values> lst =  new List<Values>();
                    Encoding Encoding = request.ContentEncoding;
                     string[] values = request.ContentType.Split( ' ; ').Skip( 1).ToArray();
                     string boundary =  string.Join( " ; ", values).Replace( " boundary= ",  "").Trim();
                     byte[] ChunkBoundary = Encoding.GetBytes( " -- " + boundary +  " \r\n ");
                     byte[] EndBoundary = Encoding.GetBytes( " -- " + boundary +  " --\r\n ");
                    Stream SourceStream = request.InputStream;
                     var resultStream =  new MemoryStream();
                     bool CanMoveNext =  true;
                    Values data =  null;
                     while (CanMoveNext)
                    {
                         byte[] currentChunk = ReadLineAsBytes(SourceStream);
                         if (!Encoding.GetString(currentChunk).Equals( " \r\n "))
                            resultStream.Write(currentChunk,  0, currentChunk.Length);
                         if (CompareBytes(ChunkBoundary, currentChunk))
                        {
                             byte[] result =  new  byte[resultStream.Length - ChunkBoundary.Length];
                            resultStream.Position =  0;
                            resultStream.Read(result,  0, result.Length);
                            CanMoveNext =  true;
                             if (result.Length >  0)
                                data.datas = result;
                            data =  new Values();
                            lst.Add(data);
                            resultStream.Dispose();
                            resultStream =  new MemoryStream();

                        }
                         else  if (Encoding.GetString(currentChunk).Contains( " Content-Disposition "))
                        {
                             byte[] result =  new  byte[resultStream.Length -  2];
                            resultStream.Position =  0;
                            resultStream.Read(result,  0, result.Length);
                            CanMoveNext =  true;
                            data.name = Encoding.GetString(result).Replace( " Content-Disposition: form-data; name=\" ",  "").Replace( " \" ",  "").Split( ' ; ')[ 0];
                            resultStream.Dispose();
                            resultStream =  new MemoryStream();
                        }
                         else  if (Encoding.GetString(currentChunk).Contains( " Content-Type "))
                        {
                            CanMoveNext =  true;
                            data.type =  1;
                            resultStream.Dispose();
                            resultStream =  new MemoryStream();
                        }
                         else  if (CompareBytes(EndBoundary, currentChunk))
                        {
                             byte[] result =  new  byte[resultStream.Length - EndBoundary.Length -  2];
                            resultStream.Position =  0;
                            resultStream.Read(result,  0, result.Length);
                            data.datas = result;
                            resultStream.Dispose();
                            CanMoveNext =  false;
                        }
                    }
                     foreach ( var key  in lst)
                    {
                         if (key.type ==  0)
                        {
                             string value = Encoding.GetString(key.datas).Replace( " \r\n ",  "");
                             if (key.name ==  " username ")
                                userName = value;
                             if (key.name ==  " password ")
                                password = value;
                             if (key.name ==  " suffix ")
                                suffix = value;
                             if (key.name ==  " adtype ")
                                adType = value;
                        }                        
                         if (key.type ==  1)
                        {
                            FileStream fs =  new FileStream( " c:\\3.jpg ", FileMode.Create);
                            fs.Write(key.datas,  0, key.datas.Length);
                            fs.Close();
                            fs.Dispose();
                        }
                    }
                   
                     if (userName !=  " test " || password !=  " test " ||  string.IsNullOrEmpty(suffix) ||  string.IsNullOrEmpty(adType))
                    {
                        response.StatusCode =  403;
                         return;
                    }
                     int adtype =  0;
                     int.TryParse(adType,  out adtype);
                }

                response.ContentType =  " text/html;charset=utf-8 ";
                 try
                {
                     using (System.IO.Stream output = response.OutputStream)
                     using (StreamWriter writer =  new StreamWriter(output, Encoding.UTF8))
                        writer.WriteLine( " 接收完成！ ");
                }
                 catch
                {
                }
                response.Close();
            }
        }

         byte[] ReadLineAsBytes(Stream SourceStream)
        {
             var resultStream =  new MemoryStream();
             while ( true)
            {
                 int data = SourceStream.ReadByte();
                resultStream.WriteByte(( byte)data);
                 if (data ==  10)
                     break;
            }
            resultStream.Position =  0;
             byte[] dataBytes =  new  byte[resultStream.Length];
            resultStream.Read(dataBytes,  0, dataBytes.Length);
             return dataBytes;
        }
         
         bool CompareBytes( byte[] source,  byte[] comparison)
        {
             int count = source.Length;
             if (source.Length != comparison.Length)
                 return  false;
             for ( int i =  0; i < count; i++)
                 if (source[i] != comparison[i])
                     return  false;
             return  true;
        }

         public  class Values
        {
             public  int type =  0; // 0参数，1文件
             public  string name;
             public  byte[] datas;
        }
    }

<!DOCTYPE html PUBLIC  " -//W3C//DTD XHTML 1.0 Transitional//EN "  " http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">
<html xmlns= " http://www.w3.org/1999/xhtml ">
<head>
    <title></title>   
</head>

<body>
    <form method= " post " enctype= " multipart/form-data " action= " http://127.0.0.1:8080/AdSource/ ">
    <p>
        <input id= " File1 " name= " file1 " type= " file " /></p>
  <p>
        <input id= " username " name= " username " type= " text " value= " test " /></p>
      <p>
        <input id= " password " name= " password " type= " text " value= " test " /></p>
    <p>
        <input id= " suffix " name= " suffix " type= " text " value= " txt " /></p>
    <p>
        <input id= " adtype " name= " adtype " type= " text " value= " 0 "/></p>
    <p>
        <input id= " Button1 " type= " submit " value= " submit "  /></p>
    </form>    
</body>
</html>

本文转自94cool博客园博客，原文链接：http://www.cnblogs.com/94cool/archive/2011/10/25/2223457.html，如需转载请自行联系原作者