HttpWebRequest,HttpWebResponse 使用

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1	目的：工作中已经两次使用了，特此记录一下，并写好注释

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/// <summary> /// HttpWebRequest的基本配置 /// </summary> public class HttpConfig {     /// <summary>     /// 协议：http/https     /// </summary>     public string protocol     {         set;         get;     }       /// <summary>     /// 发送端发送的数据格式     /// </summary>     public string contentType     {         set;         get;     }       /// <summary>     /// 客户端希望接受的数据类型     /// </summary>     public string accept     {         set;         get;     }       /// <summary>     /// 标识请求者的一些信息，如浏览器类型和版本、操作系统，使用语言等信息(IE，Firefox以“Mozilla/....”开头)     /// </summary>     public string userAgent     {         set;         get;     }       /// <summary>     /// 超时时间     /// </summary>     public int timeOut     {         set;         get;     }       /// <summary>     /// 请求body的编码类型：utf-8/gbk2312/gbk     /// </summary>     public string encoding     {         set;         get;     }       /// <summary>     /// 请求方式：GET/POST     /// </summary>     public string method     {         set;         get;     }       /// <summary>     /// 是否保持持续连接。默认为true     /// </summary>     public bool keepAlive     {         set;         get;     }       /// <summary>     /// cookie集合     /// </summary>     public CookieContainer cc = null;       /// <summary>     /// http header集合     /// </summary>     public WebHeaderCollection whc = null;       public HttpConfig()     {         protocol = "http";         contentType = "application/xml;charset=utf-8";         accept = "application/xml";         userAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022)";         timeOut = 15;         encoding = "utf-8";         method = "POST";         keepAlive = false;     }       public HttpConfig(Dictionary<string, string> dctCookieKeyValus, string Domain, Dictionary<string, string> dctHeaderKeyValus)         : this()     {         GetCookieContainer(dctCookieKeyValus, Domain);         GetWebHeaderCollection(dctHeaderKeyValus);     }       /// <summary>     /// 设置cookies     /// </summary>     /// <param name="dctKeyValus"></param>     /// <param name="Domain"></param>     public void GetCookieContainer(Dictionary<string, string> dctKeyValus, string Domain)     {         if (dctKeyValus.Count > 0)         {             cc = new CookieContainer();             foreach (string key in dctKeyValus.Keys)             {                 Cookie cookie = new Cookie(key, dctKeyValus[key]);                 cookie.Domain = "";                 cc.Add(cookie);             }         }     }       /// <summary>     /// 设置httpheaders     /// </summary>     /// <param name="dctKeyValus"></param>     public void GetWebHeaderCollection(Dictionary<string, string> dctKeyValus)     {         if (dctKeyValus.Count > 0)         {             whc = new WebHeaderCollection();             foreach (string key in dctKeyValus.Keys)             {                 whc.Add(string.Format("{0}:{1}", key, dctKeyValus[key]));             }         }     } }   public class HttpRequestAndResponse {     HttpConfig httpConfig = null;       public HttpRequestAndResponse(HttpConfig httpconfig)     {         httpConfig = httpconfig;     }       /// <summary>     /// 调过https验证     /// </summary>     private static bool CheckValidationResult(object sender, X509Certificate certificate,                                           X509Chain chain, SslPolicyErrors errors)     {         return true;     }       public string RequestAndResponse(string url, string requestXML, ref string errString)     {         string response = "";         HttpWebRequest req = null;         HttpWebResponse res = null;         try         {             ServicePointManager.ServerCertificateValidationCallback =             new RemoteCertificateValidationCallback(CheckValidationResult);               /*最大并接数*************************************************************/             ServicePointManager.DefaultConnectionLimit = 200;//最大并发连接数             //如果写在配置文件里 app.config             // <system.net>             //  <connectionManagement>             //    <!--表示把对任何域名的请求最大http连接数都设置为200-->             //    <add address = "*" maxconnection = "200" />             //  </connectionManagement>             //</system.net>               req = WebRequest.Create(url) as HttpWebRequest;               /*HttpWebRequest的基本属性设置*************************************************************/             req.ProtocolVersion = HttpVersion.Version10;             req.UserAgent = httpConfig.userAgent;             req.KeepAlive = httpConfig.keepAlive;             req.Timeout = 1000 * httpConfig.timeOut;             req.Method = httpConfig.method;             req.Accept = httpConfig.accept;             req.ContentType = httpConfig.contentType;               /*写入http头部信息*************************************************************************/             if (httpConfig.whc != null)                 req.Headers = httpConfig.whc;               /*cookie拼接*************************************************************/             if (httpConfig.cc != null)                 req.CookieContainer = httpConfig.cc;               /*写入requestXML***************************************************************************/             if (!string.IsNullOrEmpty(requestXML))             {                 byte[] bytes = System.Text.Encoding.GetEncoding(httpConfig.encoding).GetBytes(requestXML);                 if (bytes.Length > 0)                 {                     req.ContentLength = bytes.Length;                     using (Stream reqStream = req.GetRequestStream())                     {                         reqStream.Write(bytes, 0, bytes.Length);                         reqStream.Close();                     }                 }             }               /*HttpWebResponse获取服务器数据**************************************************************/             res = req.GetResponse() as HttpWebResponse;             using (Stream resStream = res.GetResponseStream())             {                 using (StreamReader resStreamReader = new StreamReader(resStream, Encoding.GetEncoding(httpConfig.encoding)))                 {                     response = resStreamReader.ReadToEnd();                 }             }         }         catch (WebException e)         {             HttpWebResponse exceptionRes = e.Response as HttpWebResponse;             errString = "#Status-line\n";             string format = "protocolVersion:{0}\tstatusCode:{1}\tstatusDescription:{2}\n";             errString += string.Format(format, exceptionRes.ProtocolVersion, Convert.ToInt32(exceptionRes.StatusCode), exceptionRes.StatusDescription);               errString += "#Header\n";             format = "num[{0}]:({1}:{2})\n";             for (int i = 0; i < exceptionRes.Headers.Count; i++)             {                 errString += string.Format(format, i, exceptionRes.Headers.Keys[i], exceptionRes.Headers[i]);             }               errString += "#Body\n";             using (Stream resStream = exceptionRes.GetResponseStream())             {                 using (StreamReader resStreamReader = new StreamReader(resStream, Encoding.GetEncoding(httpConfig.encoding)))                 {                     errString += resStreamReader.ReadToEnd() + "\n";                     resStreamReader.Close();                     resStream.Close();                 }             }             errString += "#end\n";               exceptionRes.Close();         }         catch (Exception e)         {             errString = e.ToString();         }         finally         {             if (res!= null)             {                 res.Close();                 res = null;             }               if (req != null)             {                 req.Abort();                 req = null;             }         }           return response;     } }