利用HttpWebRequest模拟提交图片

浏览数：24 / 时间：2015年06月09日

最近在做排量post工具，以前做的都是提交文字这次需要post图片过去，弄了半天终于弄好了；

/// <summary>
   /// Post发送图片数据
   /// </summary>
   public 
Queusresult requestData(string 
uri, string 
imgUrl, List<dataModes> ListMode, Encoding en, CookieContainer cook)
   {
       HttpWebRequest req = WebRequest.Create(uri) as 
HttpWebRequest;
       req.Method = "POST";
       req.ContentType = "application/octet-stream";<br>　　　　 //一些不需要的请求头 如果去掉不影响久尽量去掉
       // req.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
       req.CookieContainer = cook;
       req.AllowAutoRedirect = true;
       <br>　　　　　//可能post了其他参数需要跟图片拼接，我这里没有 所以注释了
       //StringBuilder postData = new StringBuilder("");
       //foreach (dataModes m in ListMode)
       //{
       //    postData.AppendFormat("{0}={1}&", m.keys, m.values);
       //}
       //postData.AppendFormat("{0}={1}", "1", "1");
       //Byte[] writData = ASCIIEncoding.ASCII.GetBytes(postData.ToString());
 
       //读取图片
       FileStream oStream = new 
FileStream(imgUrl, FileMode.Open, FileAccess.Read);
       BinaryReader oReader = new 
BinaryReader(oStream);
       Byte[] imgData = oReader.ReadBytes(Convert.ToInt32(oStream.Length));
 
       //byte[] data3 = new byte[writData.Length + imgData.Length];
       //System.Array.Copy(writData, 0, data3, 0, writData.Length);
       //System.Array.Copy(imgData, 0, data3, writData.Length, imgData.Length);
 
       req.ContentLength = imgData.Length;
       Stream stream = req.GetRequestStream();
       stream.Write(imgData, 0, imgData.Length);
       stream.Close();
 
       HttpWebResponse response = req.GetResponse() as 
HttpWebResponse;
       Stream str = response.GetResponseStream();
       string 
html = "";
       using 
(StreamReader strRead = new 
StreamReader(str, en))
       {
           req.CookieContainer.Add(response.Cookies);
           html = strRead.ReadToEnd();
       }
       Queusresult q = new 
Queusresult();
       q.html = html;
       q.cookie = cook;
       return 
q;