C#HttpHelper官方產品發布與源碼下載---蘇飛版
http://www.sufeinet.com/thread-3-1-1.html
在C#用HttpWebRequest中發送GET/HTTP/HTTPS請求
http://zhoufoxcn.blog.51cto.com/792419/561934/
HttpWebRequest和HttpWebResponse
http://blog.csdn.net/haitaofeiyang/article/details/18362225
/// <summary> /// 類說明：HttpHelper類，用來實現Http訪問，Post或者Get方式的，直接訪問，帶Cookie的，帶證書的等方式，可以設置代理 /// 重要提示：請不要自行修改本類，如果因為你自己修改后將無法升級到新版本。如果確實有什么問題請到官方網站提建議， /// 我們一定會及時修改 /// 編碼日期：2011-09-20 /// 編 碼 人：蘇飛 /// 聯系方式：361983679 /// 官方網址：http://www.sufeinet.com/thread-3-1-1.html /// 修改日期：2014-04-21 /// 版 本 號：1.4.5 /// </summary> using System; using System.Collections.Generic; using System.Text; using System.Net; using System.IO; using System.Text.RegularExpressions; using System.IO.Compression; using System.Security.Cryptography.X509Certificates; using System.Net.Security; namespace DotNet4.Utilities { /// <summary> /// Http連接操作幫助類 /// </summary> public class HttpHelper { #region 預定義方法或者變更 //默認的編碼 private Encoding encoding = Encoding.Default; //Post數據編碼 private Encoding postencoding = Encoding.Default; //HttpWebRequest對象用來發起請求 private HttpWebRequest request = null; //獲取影響流的數據對象 private HttpWebResponse response = null; /// <summary> /// 根據相傳入的數據，得到相應頁面數據 /// </summary> /// <param name="item">參數類對象</param> /// <returns>返回HttpResult類型</returns> public HttpResult GetHtml(HttpItem item) { //返回參數 HttpResult result = new HttpResult(); try { //准備參數 SetRequest(item); } catch (Exception ex) { return new HttpResult() { Cookie = string.Empty, Header = null, Html = ex.Message, StatusDescription = "配置參數時出錯：" + ex.Message }; } try { #region 得到請求的response using (response = (HttpWebResponse)request.GetResponse()) { result.StatusCode = response.StatusCode; result.StatusDescription = response.StatusDescription; result.Header = response.Headers; if (response.Cookies != null) result.CookieCollection = response.Cookies; if (response.Headers["set-cookie"] != null) result.Cookie = response.Headers["set-cookie"]; byte[] ResponseByte = null; using (MemoryStream _stream = new MemoryStream()) { //GZIIP處理 if (response.ContentEncoding != null && response.ContentEncoding.Equals("gzip", StringComparison.InvariantCultureIgnoreCase)) { //開始讀取流並設置編碼方式 new GZipStream(response.GetResponseStream(), CompressionMode.Decompress).CopyTo(_stream, 10240); } else { //開始讀取流並設置編碼方式 response.GetResponseStream().CopyTo(_stream, 10240); } //獲取Byte ResponseByte = _stream.ToArray(); } if (ResponseByte != null & ResponseByte.Length > 0) { //是否返回Byte類型數據 if (item.ResultType == ResultType.Byte) result.ResultByte = ResponseByte; //從這里開始我們要無視編碼了 if (encoding == null) { Match meta = Regex.Match(Encoding.Default.GetString(ResponseByte), "<meta([^<]*)charset=([^<]*)[\"']", RegexOptions.IgnoreCase); string c = (meta.Groups.Count > 1) ? meta.Groups[2].Value.ToLower().Trim() : string.Empty; if (c.Length > 2) { try { if (c.IndexOf(" ") > 0) c = c.Substring(0, c.IndexOf(" ")); encoding = Encoding.GetEncoding(c.Replace("\"", "").Replace("'", "").Replace(";", "").Replace("iso-8859-1", "gbk").Trim()); } catch { if (string.IsNullOrEmpty(response.CharacterSet)) encoding = Encoding.UTF8; else encoding = Encoding.GetEncoding(response.CharacterSet); } } else { if (string.IsNullOrEmpty(response.CharacterSet)) encoding = Encoding.UTF8; else encoding = Encoding.GetEncoding(response.CharacterSet); } } //得到返回的HTML result.Html = encoding.GetString(ResponseByte); } else { //得到返回的HTML result.Html = "本次請求並未返回任何數據"; } } #endregion } catch (WebException ex) { //這里是在發生異常時返回的錯誤信息 response = (HttpWebResponse)ex.Response; result.Html = ex.Message; if (response != null) { result.StatusCode = response.StatusCode; result.StatusDescription = response.StatusDescription; } } catch (Exception ex) { result.Html = ex.Message; } if (item.IsToLower) result.Html = result.Html.ToLower(); return result; } /// <summary> /// 為請求准備參數 /// </summary> ///<param name="item">參數列表</param> private void SetRequest(HttpItem item) { // 驗證證書 SetCer(item); //設置Header參數 if (item.Header != null && item.Header.Count > 0) foreach (string key in item.Header.AllKeys) { request.Headers.Add(key, item.Header[key]); } // 設置代理 SetProxy(item); if (item.ProtocolVersion != null) request.ProtocolVersion = item.ProtocolVersion; request.ServicePoint.Expect100Continue = item.Expect100Continue; //請求方式Get或者Post request.Method = item.Method; request.Timeout = item.Timeout; request.KeepAlive = item.KeepAlive; request.ReadWriteTimeout = item.ReadWriteTimeout; if (!string.IsNullOrWhiteSpace(item.Host)) { request.Host = item.Host; } //Accept request.Accept = item.Accept; //ContentType返回類型 request.ContentType = item.ContentType; //UserAgent客戶端的訪問類型，包括瀏覽器版本和操作系統信息 request.UserAgent = item.UserAgent; // 編碼 encoding = item.Encoding; //設置安全憑證 request.Credentials = item.ICredentials; //設置Cookie SetCookie(item); //來源地址 request.Referer = item.Referer; //是否執行跳轉功能 request.AllowAutoRedirect = item.Allowautoredirect; //設置Post數據 SetPostData(item); //設置最大連接 if (item.Connectionlimit > 0) request.ServicePoint.ConnectionLimit = item.Connectionlimit; } /// <summary> /// 設置證書 /// </summary> /// <param name="item"></param> private void SetCer(HttpItem item) { if (!string.IsNullOrWhiteSpace(item.CerPath)) { //這一句一定要寫在創建連接的前面。使用回調的方法進行證書驗證。 ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(CheckValidationResult); //初始化對像，並設置請求的URL地址 request = (HttpWebRequest)WebRequest.Create(item.URL); SetCerList(item); //將證書添加到請求里 request.ClientCertificates.Add(new X509Certificate(item.CerPath)); } else { //初始化對像，並設置請求的URL地址 request = (HttpWebRequest)WebRequest.Create(item.URL); SetCerList(item); } } /// <summary> /// 設置多個證書 /// </summary> /// <param name="item"></param> private void SetCerList(HttpItem item) { if (item.ClentCertificates != null && item.ClentCertificates.Count > 0) { foreach (X509Certificate c in item.ClentCertificates) { request.ClientCertificates.Add(c); } } } /// <summary> /// 設置Cookie /// </summary> /// <param name="item">Http參數</param> private void SetCookie(HttpItem item) { if (!string.IsNullOrEmpty(item.Cookie)) request.Headers[HttpRequestHeader.Cookie] = item.Cookie; //設置CookieCollection if (item.ResultCookieType == ResultCookieType.CookieCollection) { request.CookieContainer = new CookieContainer(); if (item.CookieCollection != null && item.CookieCollection.Count > 0) request.CookieContainer.Add(item.CookieCollection); } } /// <summary> /// 設置Post數據 /// </summary> /// <param name="item">Http參數</param> private void SetPostData(HttpItem item) { //驗證在得到結果時是否有傳入數據 if (request.Method.Trim().ToLower().Contains("post")) { if (item.PostEncoding != null) { postencoding = item.PostEncoding; } byte[] buffer = null; //寫入Byte類型 if (item.PostDataType == PostDataType.Byte && item.PostdataByte != null && item.PostdataByte.Length > 0) { //驗證在得到結果時是否有傳入數據 buffer = item.PostdataByte; }//寫入文件 else if (item.PostDataType == PostDataType.FilePath && !string.IsNullOrWhiteSpace(item.Postdata)) { StreamReader r = new StreamReader(item.Postdata, postencoding); buffer = postencoding.GetBytes(r.ReadToEnd()); r.Close(); } //寫入字符串 else if (!string.IsNullOrWhiteSpace(item.Postdata)) { buffer = postencoding.GetBytes(item.Postdata); } if (buffer != null) { request.ContentLength = buffer.Length; request.GetRequestStream().Write(buffer, 0, buffer.Length); } } } /// <summary> /// 設置代理 /// </summary> /// <param name="item">參數對象</param> private void SetProxy(HttpItem item) { bool isIeProxy = false; if (!string.IsNullOrWhiteSpace(item.ProxyIp)) { isIeProxy = item.ProxyIp.ToLower().Contains("ieproxy"); } if (!string.IsNullOrWhiteSpace(item.ProxyIp) && !isIeProxy) { //設置代理服務器 if (item.ProxyIp.Contains(":")) { string[] plist = item.ProxyIp.Split(':'); WebProxy myProxy = new WebProxy(plist[0].Trim(), Convert.ToInt32(plist[1].Trim())); //建議連接 myProxy.Credentials = new NetworkCredential(item.ProxyUserName, item.ProxyPwd); //給當前請求對象 request.Proxy = myProxy; } else { WebProxy myProxy = new WebProxy(item.ProxyIp, false); //建議連接 myProxy.Credentials = new NetworkCredential(item.ProxyUserName, item.ProxyPwd); //給當前請求對象 request.Proxy = myProxy; } } else if (isIeProxy) { //設置為IE代理 } else { request.Proxy = item.WebProxy; } } /// <summary> /// 回調驗證證書問題 /// </summary> /// <param name="sender">流對象</param> /// <param name="certificate">證書</param> /// <param name="chain">X509Chain</param> /// <param name="errors">SslPolicyErrors</param> /// <returns>bool</returns> public bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) { return true; } #endregion } /// <summary> /// Http請求參考類 /// </summary> public class HttpItem { /// <summary> /// 請求URL必須填寫 /// </summary> public string URL { get; set; } string _Method = "GET"; /// <summary> /// 請求方式默認為GET方式,當為POST方式時必須設置Postdata的值 /// </summary> public string Method { get { return _Method; } set { _Method = value; } } int _Timeout = 100000; /// <summary> /// 默認請求超時時間 /// </summary> public int Timeout { get { return _Timeout; } set { _Timeout = value; } } int _ReadWriteTimeout = 30000; /// <summary> /// 默認寫入Post數據超時間 /// </summary> public int ReadWriteTimeout { get { return _ReadWriteTimeout; } set { _ReadWriteTimeout = value; } } /// <summary> /// 設置Host的標頭信息 /// </summary> public string Host { get; set; } Boolean _KeepAlive = true; /// <summary> /// 獲取或設置一個值，該值指示是否與 Internet 資源建立持久性連接默認為true。 /// </summary> public Boolean KeepAlive { get { return _KeepAlive; } set { _KeepAlive = value; } } string _Accept = "text/html, application/xhtml+xml, */*"; /// <summary> /// 請求標頭值 默認為text/html, application/xhtml+xml, */* /// </summary> public string Accept { get { return _Accept; } set { _Accept = value; } } string _ContentType = "text/html"; /// <summary> /// 請求返回類型默認 text/html /// </summary> public string ContentType { get { return _ContentType; } set { _ContentType = value; } } string _UserAgent = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"; /// <summary> /// 客戶端訪問信息默認Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0) /// </summary> public string UserAgent { get { return _UserAgent; } set { _UserAgent = value; } } /// <summary> /// 返回數據編碼默認為NUll,可以自動識別,一般為utf-8,gbk,gb2312 /// </summary> public Encoding Encoding { get; set; } private PostDataType _PostDataType = PostDataType.String; /// <summary> /// Post的數據類型 /// </summary> public PostDataType PostDataType { get { return _PostDataType; } set { _PostDataType = value; } } /// <summary> /// Post請求時要發送的字符串Post數據 /// </summary> public string Postdata { get; set; } /// <summary> /// Post請求時要發送的Byte類型的Post數據 /// </summary> public byte[] PostdataByte { get; set; } /// <summary> /// Cookie對象集合 /// </summary> public CookieCollection CookieCollection { get; set; } /// <summary> /// 請求時的Cookie /// </summary> public string Cookie { get; set; } /// <summary> /// 來源地址，上次訪問地址 /// </summary> public string Referer { get; set; } /// <summary> /// 證書絕對路徑 /// </summary> public string CerPath { get; set; } /// <summary> /// 設置代理對象，不想使用IE默認配置就設置為Null，而且不要設置ProxyIp /// </summary> public WebProxy WebProxy { get; set; } private Boolean isToLower = false; /// <summary> /// 是否設置為全文小寫，默認為不轉化 /// </summary> public Boolean IsToLower { get { return isToLower; } set { isToLower = value; } } private Boolean allowautoredirect = false; /// <summary> /// 支持跳轉頁面，查詢結果將是跳轉后的頁面，默認是不跳轉 /// </summary> public Boolean Allowautoredirect { get { return allowautoredirect; } set { allowautoredirect = value; } } private int connectionlimit = 1024; /// <summary> /// 最大連接數 /// </summary> public int Connectionlimit { get { return connectionlimit; } set { connectionlimit = value; } } /// <summary> /// 代理Proxy 服務器用戶名 /// </summary> public string ProxyUserName { get; set; } /// <summary> /// 代理 服務器密碼 /// </summary> public string ProxyPwd { get; set; } /// <summary> /// 代理 服務IP,如果要使用IE代理就設置為ieproxy /// </summary> public string ProxyIp { get; set; } private ResultType resulttype = ResultType.String; /// <summary> /// 設置返回類型String和Byte /// </summary> public ResultType ResultType { get { return resulttype; } set { resulttype = value; } } private WebHeaderCollection header = new WebHeaderCollection(); /// <summary> /// header對象 /// </summary> public WebHeaderCollection Header { get { return header; } set { header = value; } } /// <summary> // 獲取或設置用於請求的 HTTP 版本。返回結果:用於請求的 HTTP 版本。默認為 System.Net.HttpVersion.Version11。 /// </summary> public Version ProtocolVersion { get; set; } private Boolean _expect100continue = true; /// <summary> /// 獲取或設置一個 System.Boolean 值，該值確定是否使用 100-Continue 行為。如果 POST 請求需要 100-Continue 響應，則為 true；否則為 false。默認值為 true。 /// </summary> public Boolean Expect100Continue { get { return _expect100continue; } set { _expect100continue = value; } } /// <summary> /// 設置509證書集合 /// </summary> public X509CertificateCollection ClentCertificates { get; set; } /// <summary> /// 設置或獲取Post參數編碼,默認的為Default編碼 /// </summary> public Encoding PostEncoding { get; set; } private ResultCookieType _ResultCookieType = ResultCookieType.String; /// <summary> /// Cookie返回類型,默認的是只返回字符串類型 /// </summary> public ResultCookieType ResultCookieType { get { return _ResultCookieType; } set { _ResultCookieType = value; } } private ICredentials _ICredentials = CredentialCache.DefaultCredentials; /// <summary> /// 獲取或設置請求的身份驗證信息。 /// </summary> public ICredentials ICredentials { get { return _ICredentials; } set { _ICredentials = value; } } } /// <summary> /// Http返回參數類 /// </summary> public class HttpResult { /// <summary> /// Http請求返回的Cookie /// </summary> public string Cookie { get; set; } /// <summary> /// Cookie對象集合 /// </summary> public CookieCollection CookieCollection { get; set; } /// <summary> /// 返回的String類型數據 只有ResultType.String時才返回數據，其它情況為空 /// </summary> public string Html { get; set; } /// <summary> /// 返回的Byte數組 只有ResultType.Byte時才返回數據，其它情況為空 /// </summary> public byte[] ResultByte { get; set; } /// <summary> /// header對象 /// </summary> public WebHeaderCollection Header { get; set; } /// <summary> /// 返回狀態說明 /// </summary> public string StatusDescription { get; set; } /// <summary> /// 返回狀態碼,默認為OK /// </summary> public HttpStatusCode StatusCode { get; set; } } /// <summary> /// 返回類型 /// </summary> public enum ResultType { /// <summary> /// 表示只返回字符串 只有Html有數據 /// </summary> String, /// <summary> /// 表示返回字符串和字節流 ResultByte和Html都有數據返回 /// </summary> Byte } /// <summary> /// Post的數據格式默認為string /// </summary> public enum PostDataType { /// <summary> /// 字符串類型，這時編碼Encoding可不設置 /// </summary> String, /// <summary> /// Byte類型，需要設置PostdataByte參數的值編碼Encoding可設置為空 /// </summary> Byte, /// <summary> /// 傳文件，Postdata必須設置為文件的絕對路徑，必須設置Encoding的值 /// </summary> FilePath } /// <summary> /// Cookie返回類型 /// </summary> public enum ResultCookieType { /// <summary> /// 只返回字符串類型的Cookie /// </summary> String, /// <summary> /// CookieCollection格式的Cookie集合同時也返回String類型的cookie /// </summary> CookieCollection } }