public static class HttpUtil
{ #region 变量#endregion
#region cookie容器
/// <summary>
/// 创建Cookie容器。 /// </summary> /// <returns></returns> public static CookieContainer CreateCookie() { return new CookieContainer(); }/// <summary>
/// 获取 cookie容器。 /// </summary> public static CookieContainer MyCookie { get { try { if (null == HttpContext.Current) return null;var cookie = HttpContext.Current.Session["CookieContainer98562"] as CookieContainer;
if (null == cookie) { cookie = CreateCookie(); HttpContext.Current.Session["CookieContainer98562"] = cookie; }return cookie;
} catch { return null; } } }/// <summary>
/// 获取指定URI下的Cookie键和值。 /// </summary> /// <param name="uri"></param> /// <returns></returns> public static string GetCookeValues(Uri uri) { var t = string.Empty; foreach (Cookie _cookie in HttpUtil.MyCookie.GetCookies(new Uri("http://b2b.cits.com.cn"))) { t += _cookie.Name + ":" + _cookie.Value + "\n"; } return t; }#endregion
#region 模拟浏览器请求数据
/// <summary> /// 模拟浏览器GET数据。 /// </summary> /// <param name="url">请求网址</param> /// <returns></returns> public static string GetData(string url) { return GetData(url, Encoding.UTF8); }/// <summary>
/// 模拟浏览器GET数据。 /// </summary> /// <param name="url">请求网址</param> /// <param name="en">字符编码</param> /// <returns></returns> public static string GetData(string url, Encoding en) { var req = (HttpWebRequest)WebRequest.Create(url); req.CookieContainer = MyCookie; req.KeepAlive = true; req.Method = "GET"; req.Host = "flights.ctrip.com"; req.ContentType = "application/x-www-form-urlencoded"; req.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:29.0) Gecko/20100101 Firefox/29.0"; req.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"; req.AllowAutoRedirect = true; req.Timeout = 50000; req.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"; //req.Accept = "application/json";return GetData(req, en);
}/// <summary>
/// 模拟浏览器GET数据。 /// </summary> /// <param name="url">请求网址</param> /// <param name="en">编码</param> /// <returns></returns> public static string GetData(HttpWebRequest req, Encoding en) { if (null == req.CookieContainer) req.CookieContainer = MyCookie;if (req.RequestUri.ToString().StartsWith("https", StringComparison.OrdinalIgnoreCase))
{ ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3; ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult); req.ProtocolVersion = HttpVersion.Version10; }var res = (HttpWebResponse)req.GetResponse();
//CookieCollection cook = res.Cookies; using (var resStream = res.GetResponseStream()) { using (var sr = new StreamReader(resStream, en)) { return sr.ReadToEnd(); } } }/// <summary>
/// 模拟浏览器下载数据。 /// </summary> /// <param name="url">请求网址</param> /// <returns></returns> public static Stream DownloadData(HttpWebRequest req) { if (null == req.CookieContainer) req.CookieContainer = MyCookie;System.Net.ServicePointManager.ServerCertificateValidationCallback += (se, cert, chain, sslerror) =>
{ return true; };return ((HttpWebResponse)req.GetResponse()).GetResponseStream();
}public static string PrintCookie(CookieCollection cookies)
{ var s = ""; foreach (System.Net.Cookie _c in cookies) s += _c.Name + ":" + _c.Value + "(" + _c.Domain + ")" + "，";return s;
}/// <summary>
/// 模拟浏览器GET数据。 /// </summary> /// <param name="url">请求网址</param> /// <param name="en">编码</param> /// <returns></returns> public static void GetDataAsync(HttpWebRequest req, AsyncCallback callback) { if (null == req.CookieContainer) req.CookieContainer = MyCookie;System.Net.ServicePointManager.ServerCertificateValidationCallback += (se, cert, chain, sslerror) =>
{ return true; };req.BeginGetResponse(callback, req);
} /// <summary> /// 模拟浏览器请求Post数据。 /// </summary> /// <param name="url">对方API网址</param> /// <param name="postData">请求数据</param> /// <returns></returns> public static string PostData(string url, string postData) { var req = (HttpWebRequest)WebRequest.Create(url); req.KeepAlive = true; req.Method = "POST"; req.AllowAutoRedirect = true; req.CookieContainer = MyCookie; req.Host = "kyfw.12306.cn"; req.ContentType = "application/x-www-form-urlencoded"; req.UserAgent = "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)"; req.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"; req.AllowAutoRedirect = true; req.Timeout = 50000;return PostData(req, postData, Encoding.UTF8);
}/// <summary>
/// 模拟浏览器请求Post数据。 /// </summary> /// <param name="req">http请求</param> /// <param name="postData">请求数据</param> /// <param name="en">编码</param> /// <returns></returns> public static string PostData(HttpWebRequest req, string postData, Encoding en) { CookieCollection cookies = null; return PostData(req, postData, en, ref cookies); }/// <summary>
/// 模拟浏览器请求Post数据。 /// </summary> /// <param name="req">http请求</param> /// <param name="postData">请求数据</param> /// <param name="en">编码</param> /// <param name="cookies">从服务器端获取到的关联cookie</param> /// <returns></returns> public static string PostData(HttpWebRequest req, string postData, Encoding en, ref CookieCollection cookies) { if (null == req.CookieContainer) req.CookieContainer = MyCookie;req.MaximumAutomaticRedirections = 4;
req.MaximumResponseHeadersLength = 4; req.Credentials = CredentialCache.DefaultCredentials;var buffer = en.GetBytes(postData);
req.ContentLength = buffer.Length; using (var reqStream = req.GetRequestStream()) { reqStream.Write(buffer, 0, buffer.Length); }if (req.RequestUri.ToString().StartsWith("https", StringComparison.OrdinalIgnoreCase))
{ ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3; ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult); req.ProtocolVersion = HttpVersion.Version10; }var res = (HttpWebResponse)req.GetResponse();
if (null != req.CookieContainer) { res.Cookies = req.CookieContainer.GetCookies(req.RequestUri); cookies = res.Cookies; }using (var resStream = res.GetResponseStream())
{ using (var sr = new StreamReader(resStream, en)) { return sr.ReadToEnd(); } } }/// <summary>
/// Htpp Post请求数据。 /// </summary> /// <param name="url">对方API网址</param> /// <param name="postData">请求数据</param> /// <param name="enCoding">字符编码</param> /// <returns></returns> public static string PostData(string url, byte[] buffer, Encoding enCoding) { var req = (HttpWebRequest)WebRequest.Create(url); req.KeepAlive = true; req.Method = "POST"; req.AllowAutoRedirect = true; //req.CookieContainer = MyCookie; req.ContentType = "application/x-www-form-urlencoded"; req.UserAgent = "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)"; req.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"; req.AllowAutoRedirect = true; req.Timeout = 50000;req.ContentLength = buffer.Length;
using (var reqStream = req.GetRequestStream()) { reqStream.Write(buffer, 0, buffer.Length); }System.Net.ServicePointManager.ServerCertificateValidationCallback += (se, cert, chain, sslerror) =>
{ return true; };var res = (HttpWebResponse)req.GetResponse();
using (var resStream = res.GetResponseStream()) { using (var sr = new StreamReader(resStream, enCoding)) { return sr.ReadToEnd(); } } }#endregion
#region 填充基本的HttpWebRequest
/// <summary>
/// 填充基本的HttpWebRequest。 /// </summary> /// <param name="req">HttpWebRequest对象</param> /// <param name="method">请求方法(取值：GET OR POST)</param> /// <param name="host">Host标头值</param> /// <param name="referer">当前引用页面网址</param> public static void FillWebRequest(HttpWebRequest req, string method, string host, string referer) { if (null == req) return;if (null == req.CookieContainer)
req.CookieContainer = HttpUtil.MyCookie;req.KeepAlive = true;
req.Method = method; req.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"; req.AllowAutoRedirect = true; req.ContentType = "application/x-www-form-urlencoded"; req.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:36.0) Gecko/20100101 Firefox/36.0"; req.AllowAutoRedirect = true; req.Timeout = 50000; req.Host = host; req.Referer = referer; }/// <summary>
/// 创建HTTP请求对象。 /// </summary> /// <param name="cookie">Cookie对象</param> /// <param name="url">请求网址</param> /// <param name="method">请求方法(取值：GET OR POST)</param> /// <param name="host">Host标头值</param> /// <param name="referer">当前引用页面网址</param> /// <returns></returns> public static HttpWebRequest CreateWebRequest(CookieContainer cookie, string url, string method, string host, string referer) { var req = (HttpWebRequest)WebRequest.Create(url); req.CookieContainer = cookie; FillWebRequest(req, method, host, referer); return req; }#endregion
#region 获取所有参数
/// <summary>
/// 获取所有请求参数(GET OR POST)。 /// </summary> /// <param name="context"></param> /// <returns></returns> public static string GetRequestString(HttpContext context) { return context.Request.RequestType.IgnoreCaseEquals("POST") ? context.Request.Form.ToString() : context.Request.QueryString.ToString(); }#endregion
#region 其他方法
/// <summary>
/// 验证证书。 /// </summary> /// <param name="sender"></param> /// <param name="certificate"></param> /// <param name="chain"></param> /// <param name="errors"></param> /// <returns></returns> public static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) { return true; }#endregion
}