HttpHelper

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.IO;
using System.Text.RegularExpressions;
using System.Windows.Forms;

namespace ShanXiDianXianWeb
{
public class HttpHelper
{
public static CookieContainer CookieContainers = new CookieContainer();

public static string FireFoxAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.23) Gecko/20110920 Firefox/3.6.23";
public static string IE7 = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; InfoPath.2; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; .NET4.0C; .NET4.0E)";
public static string IE = " Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E) ";
/// <summary>
///
/// </summary>
/// <param name="url"></param>
/// <param name="method">"POST" or "GET"</param>
/// <param name="data">when the method is "POST", the data will send to web server, if the method is "GET", the data should be string.empty</param>
/// <returns></returns>
public static string GetResponse(string url, string method, string data)
{
try
{
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
req.KeepAlive = true;
req.Method = method.ToUpper();
req.AllowAutoRedirect = true;
req.CookieContainer = CookieContainers;
req.ContentType = "application/x-www-form-urlencoded";

req.UserAgent = IE;
// req.UserAgent = FireFoxAgent;
req.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";

req.Timeout = 50000;

if (method.ToUpper() == "POST" && data != null)
{
ASCIIEncoding encoding = new ASCIIEncoding();
byte[] postBytes = encoding.GetBytes(data); ;
req.ContentLength = postBytes.Length;
Stream st = req.GetRequestStream();
st.Write(postBytes, 0, postBytes.Length);
st.Close();
}
//http证书
//System.Net.ServicePointManager.ServerCertificateValidationCallback += (se, cert, chain, sslerror) =>
//{
// return true;
//};

Encoding myEncoding = Encoding.GetEncoding("gb2312");

HttpWebResponse res = (HttpWebResponse)req.GetResponse();
Stream resst = res.GetResponseStream();
StreamReader sr = new StreamReader(resst, myEncoding);
string str = sr.ReadToEnd();

return str;
}
catch (Exception)
{
return string.Empty;
}
}

public static string GetResponse(string url, string method, string data, ref CookieContainer cookiecontainer)
{
try
{
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
req.KeepAlive = true;
req.Method = method.ToUpper();
req.AllowAutoRedirect = true;
if (cookiecontainer == null || cookiecontainer.Count == 0)
{
cookiecontainer = new CookieContainer();
}
req.CookieContainer = cookiecontainer;
req.ContentType = "application/x-www-form-urlencoded";

req.UserAgent = IE;
// req.UserAgent = FireFoxAgent;
req.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
req.Timeout = 60000;

if (method.ToUpper() == "POST" && data != null)
{
ASCIIEncoding encoding = new ASCIIEncoding();
byte[] postBytes = encoding.GetBytes(data); ;
req.ContentLength = postBytes.Length;
Stream st = req.GetRequestStream();
st.Write(postBytes, 0, postBytes.Length);
st.Close();
}
//http证书
//System.Net.ServicePointManager.ServerCertificateValidationCallback += (se, cert, chain, sslerror) =>
//{
// return true;
//};

Encoding myEncoding = Encoding.GetEncoding("utf-8");

HttpWebResponse res = (HttpWebResponse)req.GetResponse();
Stream resst = res.GetResponseStream();
StreamReader sr = new StreamReader(resst, myEncoding);
string str = sr.ReadToEnd();

return str;
}
catch (Exception ex)
{
return string.Empty;
}
}

/// <summary>
/// 获得图片流
/// </summary>
/// <param name="url"></param>
/// <param name="cookiecontainer"></param>
/// <returns></returns>
public static Stream GetResponseImage(string url, ref CookieContainer cookiecontainer)
{
Stream resst = null;
try
{
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
req.KeepAlive = true;
req.Method = "GET";
req.AllowAutoRedirect = true;
//req.CookieContainer = cookieContainer;
if (cookiecontainer == null || cookiecontainer.Count == 0)
{
cookiecontainer = new CookieContainer();
}
req.CookieContainer = cookiecontainer;
req.ContentType = "application/x-www-form-urlencoded";

req.UserAgent = IE7;
req.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
req.Timeout = 50000;

System.Net.ServicePointManager.ServerCertificateValidationCallback += (se, cert, chain, sslerror) =>
{
return true;
};

Encoding myEncoding = Encoding.GetEncoding("UTF-8");

HttpWebResponse res = (HttpWebResponse)req.GetResponse();
resst = res.GetResponseStream();

return resst;
}
catch
{
return null;
}
}

private string GetPageStringbyWebBrowser(string url)
{
if (url.Equals("about:blank")) return null; ;
if (!url.StartsWith("http://") && !url.StartsWith("https://")) { url = "http://" + url; }

WebBrowser myWB = new WebBrowser();
myWB.ScrollBarsEnabled = false;
myWB.Navigate(url);
while (myWB.ReadyState != WebBrowserReadyState.Complete)
{
System.Windows.Forms.Application.DoEvents();
}
if (myWB != null)
{
System.IO.StreamReader getReader = null;
try
{
getReader = new System.IO.StreamReader(myWB.DocumentStream, System.Text.Encoding.GetEncoding(myWB.Document.Encoding));
string gethtml = getReader.ReadToEnd();
//codel = gethtml.Substring(1000,);
// Image i = Image.FromStream(gethtml);
MessageBox.Show(gethtml);

return gethtml;
}
catch { return null; }
finally
{
if (getReader != null) { getReader.Close(); }
myWB.Dispose();
}
}
return null;
}
public static string GetRegexString(string pattern, string source)
{
Regex r = new Regex(pattern);
MatchCollection mc = r.Matches(source);
return mc[0].Groups[1].Value;
}

public static string[] GetRegexStrings(string pattern, string source)
{
Regex r = new Regex(pattern);
MatchCollection mcs = r.Matches(source);

string[] ret = new string[mcs.Count];

for (int i = 0; i < mcs.Count; i++)
ret[i] = mcs[i].Groups[1].Value;

return ret;
}
}
}