C# HttpWebRequest 通用类2 - 转

using  System;
using  System.Collections.Generic;
using  System.IO;
using  System.Net;
using  System.Text;

namespace  HttpWeb
{
     ///   <summary>  
     ///   Http操作类 
     ///   </summary>  
     public   static   class  httptest
    {
         ///   <summary>  
         ///   获取网址HTML 
         ///   </summary>  
         ///   <param name="URL"> 网址  </param>  
         ///   <returns>   </returns>  
         public   static   string  GetHtml( string  URL)
        {
            WebRequest wrt;
            wrt  =  WebRequest.Create(URL);
            wrt.Credentials  =  CredentialCache.DefaultCredentials;
            WebResponse wrp;
            wrp  =  wrt.GetResponse();
             string  reader  =   new  StreamReader(wrp.GetResponseStream(), Encoding.GetEncoding( " gb2312 " )).ReadToEnd();
             try
            {
                wrt.GetResponse().Close();
            }
             catch  (WebException ex)
            {
                 throw  ex;
            }
             return  reader;
        }
         ///   <summary>  
         ///  获取网站cookie 
         ///   </summary>  
         ///   <param name="URL"> 网址  </param>  
         ///   <param name="cookie"> cookie  </param>  
         ///   <returns>   </returns>  
         public   static   string  GetHtml( string  URL,  out   string  cookie)
        {
            WebRequest wrt;
            wrt  =  WebRequest.Create(URL);
            wrt.Credentials  =  CredentialCache.DefaultCredentials;
            WebResponse wrp;

            wrp  =  wrt.GetResponse();


             string  html  =   new  StreamReader(wrp.GetResponseStream(), Encoding.GetEncoding( " gb2312 " )).ReadToEnd();

             try
            {
                wrt.GetResponse().Close();
            }
             catch  (WebException ex)
            {
                 throw  ex;
            }

            cookie  =  wrp.Headers.Get( " Set-Cookie " );
             return  html;
        }
         public   static   string  GetHtml( string  URL,  string  postData,  string  cookie,  out   string  header,  string  server)
        {
             return  GetHtml(server, URL, postData, cookie,  out  header);
        }
         public   static   string  GetHtml( string  server,  string  URL,  string  postData,  string  cookie,  out   string  header)
        {
             byte [] byteRequest  =  Encoding.GetEncoding( " gb2312 " ).GetBytes(postData);
             return  GetHtml(server, URL, byteRequest, cookie,  out  header);
        }
         public   static   string  GetHtml( string  server,  string  URL,  byte [] byteRequest,  string  cookie,  out   string  header)
        {
             byte [] bytes  =  GetHtmlByBytes(server, URL, byteRequest, cookie,  out  header);
            Stream getStream  =   new  MemoryStream(bytes);
            StreamReader streamReader  =   new  StreamReader(getStream, Encoding.GetEncoding( " gb2312 " ));
             string  getString  =  streamReader.ReadToEnd();
            streamReader.Close();
            getStream.Close();
             return  getString;
        }

         ///   <summary>  
         ///  Post模式浏览 
         ///   </summary>  
         ///   <param name="server"> 服务器地址  </param>  
         ///   <param name="URL"> 网址  </param>  
         ///   <param name="byteRequest"> 流  </param>  
         ///   <param name="cookie"> cookie  </param>  
         ///   <param name="header"> 句柄  </param>  
         ///   <returns>   </returns>  
         public   static   byte [] GetHtmlByBytes( string  server,  string  URL,  byte [] byteRequest,  string  cookie,  out   string  header)
        {
             long  contentLength;
            HttpWebRequest httpWebRequest;
            HttpWebResponse webResponse;
            Stream getStream;

            httpWebRequest  =  (HttpWebRequest)HttpWebRequest.Create(URL);
            CookieContainer co  =   new  CookieContainer();
            co.SetCookies( new  Uri(server), cookie);

            httpWebRequest.CookieContainer  =  co;

            httpWebRequest.ContentType  =   " application/x-www-form-urlencoded " ;
            httpWebRequest.Accept  =
                 " image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */* " ;
            httpWebRequest.Referer  =  server;
            httpWebRequest.UserAgent  =
                 " Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon; .NET CLR 1.1.4322) " ;
            httpWebRequest.Method  =   " Post " ;
            httpWebRequest.ContentLength  =  byteRequest.Length;
            Stream stream;
            stream  =  httpWebRequest.GetRequestStream();
            stream.Write(byteRequest,  0 , byteRequest.Length);
            stream.Close();
            webResponse  =  (HttpWebResponse)httpWebRequest.GetResponse();
            header  =  webResponse.Headers.ToString();
            getStream  =  webResponse.GetResponseStream();
            contentLength  =  webResponse.ContentLength;

             byte [] outBytes  =   new   byte [contentLength];
            outBytes  =  ReadFully(getStream);
            getStream.Close();
             return  outBytes;
        }
         public   static   byte [] ReadFully(Stream stream)
        {
             byte [] buffer  =   new   byte [ 128 ];
             using  (MemoryStream ms  =   new  MemoryStream())
            {
                 while  ( true )
                {
                     int  read  =  stream.Read(buffer,  0 , buffer.Length);
                     if  (read  <=   0 )
                         return  ms.ToArray();
                    ms.Write(buffer,  0 , read);
                }
            }
        }

         ///   <summary>  
         ///  Get模式 
         ///   </summary>  
         ///   <param name="URL"> 网址  </param>  
         ///   <param name="cookie"> cookies  </param>  
         ///   <param name="header"> 句柄  </param>  
         ///   <param name="server"> 服务器  </param>  
         ///   <param name="val"> 服务器  </param>  
         ///   <returns>   </returns>  
         public   static   string  GetHtml( string  URL,  string  cookie,  out   string  header,  string  server)
        {
             return  GetHtml(URL, cookie,  out  header, server,  "" );
        }
         ///   <summary>  
         ///  Get模式浏览 
         ///   </summary>  
         ///   <param name="URL"> Get网址  </param>  
         ///   <param name="cookie"> cookie  </param>  
         ///   <param name="header"> 句柄  </param>  
         ///   <param name="server"> 服务器地址  </param>  
         ///   <param name="val">   </param>  
         ///   <returns>   </returns>  
         public   static   string  GetHtml( string  URL,  string  cookie,  out   string  header,  string  server,  string  val)
        {
            HttpWebRequest httpWebRequest;
            HttpWebResponse webResponse;
            Stream getStream;
            StreamReader streamReader;
             string  getString  =   "" ;
            httpWebRequest  =  (HttpWebRequest)HttpWebRequest.Create(URL);
            httpWebRequest.Accept  =   " */* " ;
            httpWebRequest.Referer  =  server;
            CookieContainer co  =   new  CookieContainer();
            co.SetCookies( new  Uri(server), cookie);
            httpWebRequest.CookieContainer  =  co;
            httpWebRequest.UserAgent  =
                 " Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon; .NET CLR 1.1.4322) " ;
            httpWebRequest.Method  =   " GET " ;
            webResponse  =  (HttpWebResponse)httpWebRequest.GetResponse();
            header  =  webResponse.Headers.ToString();
            getStream  =  webResponse.GetResponseStream();
            streamReader  =   new  StreamReader(getStream, Encoding.GetEncoding( " gb2312 " ));
            getString  =  streamReader.ReadToEnd();

            streamReader.Close();
            getStream.Close();
             return  getString;
        }
         ///   <summary>  
         ///  返回验证码图片流 
         ///   </summary>  
         ///   <param name="server"> 服务器地址  </param>  
         ///   <param name="URL"> 验证码网址  </param>  
         ///   <param name="cookie"> cookie  </param>  
         ///   <returns>   </returns>  
         public   static  Stream GetStreamByBytes( string  server,  string  URL,  string  cookie)
        {
            Stream stream  =  GetCode(server, URL, cookie);
             return  stream;
        }

         ///   <summary>  
         ///  //获取验证码 
         ///   </summary>  
         ///   <param name="server"> 服务器地址  </param>  
         ///   <param name="url"> 验证码网址  </param>  
         ///   <param name="cookie"> cookie  </param>  
         ///   <returns>   </returns>  
         public   static  Stream GetCode( string  server,  string  url,  string  cookie)
        {

            HttpWebRequest httpWebRequest;

            httpWebRequest  =  (HttpWebRequest)HttpWebRequest.Create(url);
            CookieContainer co  =   new  CookieContainer();
            co.SetCookies( new  Uri(server), cookie);
            httpWebRequest.CookieContainer  =  co;

            HttpWebResponse response  =  (HttpWebResponse)httpWebRequest.GetResponse();
            Stream stream  =  response.GetResponseStream();
             return  stream;

        }
         ///   <summary>  
         ///  获取html 
         ///   </summary>  
         ///   <param name="server">   </param>  
         ///   <param name="url">   </param>  
         ///   <param name="cookie">   </param>  
         ///   <returns>   </returns>  

         public   static   string  GetUser( string  server,  string  url,  string  cookie)
        {
             string  getString  =   "" ;
             try
            {
                HttpWebRequest httpWebRequest;
                StreamReader streamReader;


                httpWebRequest  =  (HttpWebRequest)HttpWebRequest.Create(url);
                CookieContainer co  =   new  CookieContainer();
                co.SetCookies( new  Uri(server), cookie);
                httpWebRequest.CookieContainer  =  co;

                HttpWebResponse response  =  (HttpWebResponse)httpWebRequest.GetResponse();

                Stream stream  =  response.GetResponseStream();


                streamReader  =   new  StreamReader(stream, Encoding.GetEncoding( " gb2312 " ));
                getString  =  streamReader.ReadToEnd();


                 try
                {
                    httpWebRequest.GetResponse().Close();
                }
                 catch  (WebException ex)
                {
                     throw  ex;
                }
                streamReader.Close();
                stream.Close();

            }
             catch
            {
            }
             return  getString;

        }

    }

}