c# 获取网站验证码图片

 

 

代码
/// <summary>
/// 获取网页验证码
/// </summary>
/// <param name="server">服务器地址</param>
/// <param name="URL">网页地址</param>
/// <param name="byteRequest">字节数组,存放图片字节</param>
/// <param name="cookie">网站分配给客户的临时sessionid(临时cookie值),并非真正cookie</param>
/// <param name="header"></param>
/// <returns>图片的二进制数组</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.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;
}

 

posted @ 2010-03-30 16:19  A light heart lives long  阅读(4450)  评论(1编辑  收藏  举报