ASP.NET HTTP模拟提交通用类 GET POST

 用法：

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WebRequestSugar ws = new WebRequestSugar();          //可选参数          //ws.SetAccept          //ws.SetContentType          //ws.SetCookie          //ws.SetTimeOut          //ws.SetIsAllowAutoRedirect            //GET          var html= ws.HttpGet("http://localhost:24587/Http/HttpTest.aspx");            //带参GET          var paras=new Dictionary<string, string>() ;          paras.Add("name","skx");          paras.Add("id", "100");          var html2 = ws.HttpGet("http://localhost:24587/Http/HttpTest.aspx",paras );            //POST          var postHtml= ws.HttpPost("http://localhost:24587/Http/HttpTest.aspx", paras);            //post and file          var postHtml2 = ws.HttpUploadFile("http://localhost:24587/Http/HttpTest.aspx", "文件地址可以是数组", paras);

　　

 

类：

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using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Net; using System.IO; using System.Text.RegularExpressions; using System.Security.Cryptography.X509Certificates; using System.Net.Security; using System.Collections.Specialized;   namespace SyntacticSugar {       /// <summary>     /// ** 描述：模拟HTTP POST GET请求并获取数据     /// ** 创始时间：2015-11-24     /// ** 修改时间：-     /// ** 作者：sunkaixuan     /// ** 使用说明：     /// </summary>     public class WebRequestSugar     {         /// <summary>         /// 设置cookie         /// </summary>         private CookieContainer cookie;           /// <summary>         /// 是否允许重定向         /// </summary>         private bool allowAutoRedirect = true;           /// <summary>         /// contentType         /// </summary>         private string contentType = "application/x-www-form-urlencoded";           /// <summary>         /// accept         /// </summary>         private string accept = "*/*";           /// <summary>         /// 过期时间         /// </summary>         private int time = 5000;           /// <summary>         /// 设置请求过期时间（单位：毫秒）（默认：5000）         /// </summary>         /// <param name="time"></param>         public void SetTimeOut(int time)         {             this.time = time;         }           /// <summary>         /// 设置accept(默认:*/*)         /// </summary>         /// <param name="accept"></param>         public void SetAccept(string accept)         {             this.accept = accept;         }           /// <summary>         /// 设置contentType(默认:application/x-www-form-urlencoded)         /// </summary>         /// <param name="contentType"></param>         public void SetContentType(string contentType)         {             this.contentType = contentType;         }           /// <summary>         /// 设置Cookie         /// </summary>         /// <param name="cookie"></param>         public void SetCookie(CookieContainer cookie)         {             this.cookie = cookie;         }         /// <summary>         /// 是否允许重定向(默认:true)         /// </summary>         /// <param name="allowAutoRedirect"></param>         public void SetIsAllowAutoRedirect(bool allowAutoRedirect)         {             this.allowAutoRedirect = allowAutoRedirect;         }           /// <summary>         /// post请求返回html         /// </summary>         /// <param name="url"></param>         /// <param name="postDataStr"></param>         /// <returns></returns>         public string HttpPost(string url, Dictionary<string, string> postdata)         {             string postDataStr = null;             if (postdata != null && postdata.Count > 0)             {                 postDataStr = string.Join("&", postdata.Select(it => it.Key + "=" + it.Value));             }             HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);             request.AllowAutoRedirect = allowAutoRedirect;             request.Method = "POST";             request.Accept = accept;             request.ContentType = this.contentType;             request.Timeout = time;             request.ContentLength = Encoding.UTF8.GetByteCount(postDataStr);             if (cookie != null)                 request.CookieContainer = cookie; //cookie信息由CookieContainer自行维护             Stream myRequestStream = request.GetRequestStream();             StreamWriter myStreamWriter = new StreamWriter(myRequestStream, Encoding.GetEncoding("gb2312"));             myStreamWriter.Write(postDataStr);             myStreamWriter.Close();             HttpWebResponse response = null;             try             {                 this.SetCertificatePolicy();                 response = (HttpWebResponse)request.GetResponse();             }             catch (System.Exception ex)             {                 throw ex;             }             //获取重定向地址             //string url1 = response.Headers["Location"];             if (response != null)             {                 Stream myResponseStream = response.GetResponseStream();                 StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));                 string retString = myStreamReader.ReadToEnd();                 myStreamReader.Close();                 myResponseStream.Close();                 return retString;             }             else             {                 return null; //post请求返回为空             }         }         /// <summary>         /// get请求获取返回的html         /// </summary>         /// <param name="url">无参URL</param>         /// <param name="querydata">参数</param>         /// <returns></returns>         public string HttpGet(string url, Dictionary<string, string> querydata)         {             if (querydata != null && querydata.Count > 0)             {                 url += "?" + string.Join("&", querydata.Select(it => it.Key + "=" + it.Value));             }               return HttpGet(url);         }         /// <summary>         /// get请求获取返回的html         /// </summary>         /// <param name="url"></param>         /// <returns></returns>         public string HttpGet(string url)         {             HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);             request.Method = "GET";             request.ContentType = "text/html;charset=UTF-8";             request.CookieContainer = cookie;             request.Accept = this.accept;             request.Timeout = time;             this.SetCertificatePolicy();             HttpWebResponse response = (HttpWebResponse)request.GetResponse();             // response.Cookies = cookie.GetCookies(response.ResponseUri);             Stream myResponseStream = response.GetResponseStream();             StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));             string retString = myStreamReader.ReadToEnd();             myStreamReader.Close();             myResponseStream.Close();             return retString;         }           /// <summary>         /// POST文件         /// </summary>         /// <param name="url"></param>         /// <param name="file">文件路径</param>         /// <param name="postdata"></param>         /// <returns></returns>         public string HttpUploadFile(string url, string file, Dictionary<string, string> postdata)         {             return HttpUploadFile(url, file, postdata, Encoding.UTF8);         }         /// <summary>         /// POST文件         /// </summary>         /// <param name="url"></param>         /// <param name="file">文件路径</param>         /// <param name="postdata">参数</param>         /// <param name="encoding"></param>         /// <returns></returns>         public string HttpUploadFile(string url, string file, Dictionary<string, string> postdata, Encoding encoding)         {             return HttpUploadFile(url, new string[] { file }, postdata, encoding);         }         /// <summary>         /// POST文件         /// </summary>         /// <param name="url"></param>         /// <param name="files">文件路径</param>         /// <param name="postdata">参数</param>         /// <returns></returns>         public string HttpUploadFile(string url, string[] files, Dictionary<string, string> postdata)         {             return HttpUploadFile(url, files, postdata, Encoding.UTF8);         }         /// <summary>         /// POST文件         /// </summary>         /// <param name="url"></param>         /// <param name="files">文件路径</param>         /// <param name="postdata">参数</param>         /// <param name="encoding"></param>         /// <returns></returns>         public  string HttpUploadFile(string url, string[] files, Dictionary<string, string> postdata, Encoding encoding)         {             string boundary = "---------------------------" + DateTime.Now.Ticks.ToString("x");             byte[] boundarybytes = Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n");             byte[] endbytes = Encoding.ASCII.GetBytes("\r\n--" + boundary + "--\r\n");               //1.HttpWebRequest             HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);             request.ContentType = "multipart/form-data; boundary=" + boundary;             request.Method = "POST";             request.KeepAlive = true;             request.Accept = this.accept;             request.Timeout = this.time;             request.AllowAutoRedirect = this.allowAutoRedirect;             if (cookie != null)                 request.CookieContainer = cookie;             request.Credentials = CredentialCache.DefaultCredentials;               using (Stream stream = request.GetRequestStream())             {                 //1.1 key/value                 string formdataTemplate = "Content-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}";                 if (postdata != null)                 {                     foreach (string key in postdata.Keys)                     {                         stream.Write(boundarybytes, 0, boundarybytes.Length);                         string formitem = string.Format(formdataTemplate, key, postdata[key]);                         byte[] formitembytes = encoding.GetBytes(formitem);                         stream.Write(formitembytes, 0, formitembytes.Length);                     }                 }                   //1.2 file                 string headerTemplate = "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\nContent-Type: application/octet-stream\r\n\r\n";                 byte[] buffer = new byte[4096];                 int bytesRead = 0;                 for (int i = 0; i < files.Length; i++)                 {                     stream.Write(boundarybytes, 0, boundarybytes.Length);                     string header = string.Format(headerTemplate, "file" + i, Path.GetFileName(files[i]));                     byte[] headerbytes = encoding.GetBytes(header);                     stream.Write(headerbytes, 0, headerbytes.Length);                     using (FileStream fileStream = new FileStream(files[i], FileMode.Open, FileAccess.Read))                     {                         while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)                         {                             stream.Write(buffer, 0, bytesRead);                         }                     }                 }                   //1.3 form end                 stream.Write(endbytes, 0, endbytes.Length);             }             //2.WebResponse             HttpWebResponse response = (HttpWebResponse)request.GetResponse();             using (StreamReader stream = new StreamReader(response.GetResponseStream()))             {                 return stream.ReadToEnd();             }         }                   /// <summary>         /// 获得响应中的图像         /// </summary>         /// <param name="url"></param>         /// <returns></returns>         public Stream GetResponseImage(string url)         {             Stream resst = null;             try             {                 HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);                 req.KeepAlive = true;                 req.Method = "GET";                 req.AllowAutoRedirect = allowAutoRedirect;                 req.CookieContainer = cookie;                 req.ContentType = this.contentType;                 req.Accept = this.accept;                 req.Timeout = time;                 Encoding myEncoding = Encoding.GetEncoding("UTF-8");                 this.SetCertificatePolicy();                 HttpWebResponse res = (HttpWebResponse)req.GetResponse();                 resst = res.GetResponseStream();                 return resst;             }             catch             {                 return null;             }         }         /// <summary>         /// 正则获取匹配的第一个值         /// </summary>         /// <param name="html"></param>         /// <param name="pattern"></param>         /// <returns></returns>         private string GetStringByRegex(string html, string pattern)         {             Regex re = new Regex(pattern, RegexOptions.IgnoreCase);             MatchCollection matchs = re.Matches(html);             if (matchs.Count > 0)             {                 return matchs[0].Groups[1].Value;             }             else                 return "";         }         /// <summary>         /// 正则验证返回的response是否正确         /// </summary>         /// <param name="html"></param>         /// <param name="pattern"></param>         /// <returns></returns>         private bool VerifyResponseHtml(string html, string pattern)         {             Regex re = new Regex(pattern);             return re.IsMatch(html);         }         //注册证书验证回调事件，在请求之前注册         private void SetCertificatePolicy()         {             ServicePointManager.ServerCertificateValidationCallback                        += RemoteCertificateValidate;         }         /// <summary>          /// 远程证书验证，固定返回true         /// </summary>          private static bool RemoteCertificateValidate(object sender, X509Certificate cert,             X509Chain chain, SslPolicyErrors error)         {             return true;         }     } }