/// <summary>
/// Http操作类
/// </summary>
public static class HttpRequestUtil
{
private static Encoding DEFAULT_ENCODING = Encoding.GetEncoding("GB2312");
private static string ACCEPT = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*";
private static string CONTENT_TYPE = "application/x-www-form-urlencoded";
private static string USERAGENT = "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; InfoPath.2; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; msn OptimizedIE8;ZHCN)";
/// <summary>
/// 获取网址HTML
/// </summary>
/// <param name="url">网址 </param>
/// <returns> </returns>
public static string GetHtmlContent(string url)
{
return GetHtmlContent(url, DEFAULT_ENCODING);
}
/// <summary>
/// 获取网址HTML
/// </summary>
/// <param name="url">网址 </param>
/// <returns> </returns>
public static string GetHtmlContent(string url, Encoding encoding)
{
string html = string.Empty;
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.UserAgent = USERAGENT;
request.Credentials = CredentialCache.DefaultCredentials;
WebResponse response = request.GetResponse();
using (Stream stream = response.GetResponseStream())
{
using (StreamReader reader = new StreamReader(stream, encoding))
{
html = reader.ReadToEnd();
reader.Close();
}
}
return html;
}
/// <summary>
/// 获取网站cookie
/// </summary>
/// <param name="url">网址 </param>
/// <returns> </returns>
public static string GetCookie(string url)
{
string cookie = string.Empty;
WebRequest request = WebRequest.Create(url);
request.Credentials = CredentialCache.DefaultCredentials;
using (WebResponse response = request.GetResponse())
{
cookie = response.Headers.Get("Set-Cookie");
}
return cookie;
}
/// <summary>
/// Post模式浏览
/// </summary>
/// <param name="url">网址</param>
/// <param name="data">流</param>
/// <returns> </returns>
public static byte[] Post(string url, byte[] data)
{
return Post(null, url, data, null);
}
/// <summary>
/// Post模式浏览
/// </summary>
/// <param name="server">服务器地址 </param>
/// <param name="url">网址</param>
/// <param name="data">流</param>
/// <param name="cookieHeader">cookieHeader</param>
/// <returns> </returns>
public static byte[] Post(string server, string url, byte[] data, string cookieHeader)
{
if (data == null || data.Length == 0)
{
throw new ArgumentNullException("data");
}
HttpWebRequest httpWebRequest = (HttpWebRequest)HttpWebRequest.Create(url);
if (!string.IsNullOrEmpty(cookieHeader))
{
if (string.IsNullOrEmpty(server))
{
throw new ArgumentNullException("server");
}
CookieContainer co = new CookieContainer();
co.SetCookies(new Uri(server), cookieHeader);
httpWebRequest.CookieContainer = co;
}
httpWebRequest.ContentType = CONTENT_TYPE;
httpWebRequest.Accept = ACCEPT;
httpWebRequest.Referer = server;
httpWebRequest.UserAgent = USERAGENT;
httpWebRequest.Method = "Post";
httpWebRequest.ContentLength = data.Length;
using (Stream stream = httpWebRequest.GetRequestStream())
{
stream.Write(data, 0, data.Length);
stream.Close();
}
using (HttpWebResponse webResponse = (HttpWebResponse)httpWebRequest.GetResponse())
{
using (Stream stream = webResponse.GetResponseStream())
{
long contentLength = webResponse.ContentLength;
byte[] bytes = new byte[contentLength];
bytes = ReadFully(stream);
stream.Close();
return bytes;
}
}
}
private 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模式浏览
/// </summary>
/// <param name="url">Get网址</param>
/// <returns> </returns>
public static byte[] Get(string url)
{
return Get(null, url, null);
}
/// <summary>
/// Get模式浏览
/// </summary>
/// <param name="url">Get网址</param>
/// <param name="cookieHeader">cookieHeader</param>
/// <param name="server">服务器地址 </param>
/// <returns> </returns>
public static byte[] Get(string server, string url, string cookieHeader)
{
HttpWebRequest httpWebRequest = (HttpWebRequest)HttpWebRequest.Create(url);
if (!string.IsNullOrEmpty(cookieHeader))
{
if (string.IsNullOrEmpty(server))
{
throw new ArgumentNullException("server");
}
CookieContainer co = new CookieContainer();
co.SetCookies(new Uri(server), cookieHeader);
httpWebRequest.CookieContainer = co;
}
httpWebRequest.Accept = "*/*";
httpWebRequest.Referer = server;
httpWebRequest.UserAgent = USERAGENT;
httpWebRequest.Method = "GET";
HttpWebResponse webResponse = (HttpWebResponse)httpWebRequest.GetResponse();
using (Stream stream = webResponse.GetResponseStream())
{
long contentLength = webResponse.ContentLength;
byte[] bytes = new byte[contentLength];
bytes = ReadFully(stream);
stream.Close();
return bytes;
}
}
}
View Code
