C# HttpWebRequest 通用类2

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;

}

}

}