string responseStr = null;             string boundary = "----------------------" + DateTime.Now.Ticks.ToString("x");             byte[] boundarybytes = System.Text.Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n");            HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create("目标服务器地址");            request.Method = "POST";            request.ContentType = "multipart/form-data; boundary=" + boundary;            request.KeepAlive = true;             request.Timeout = 95000;            request.Credentials = System.Net.CredentialCache.DefaultCredentials;            request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.101 Safari/537.36";                        System.IO.Stream rs = request.GetRequestStream();            string headerTemplate = "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\nContent-Type: {2}\r\n\r\n";               for (int k = 0; k < Request.Files.Count; k++)            {                System.Web.HttpPostedFile hp = Request.Files[k];                string filename = hp.FileName;                //文件分隔符                rs.Write(boundarybytes, 0, boundarybytes.Length);                 //文件头                 byte[] headerbytes = System.Text.Encoding.UTF8.GetBytes(string.Format(headerTemplate,"file"+k, filename,hp.ContentType));                rs.Write(headerbytes, 0, headerbytes.Length);                headerbytes = new byte[hp.InputStream.Length];                //文件数据                hp.InputStream.Read(headerbytes,0,headerbytes.Length);                rs.Write(headerbytes, 0, headerbytes.Length);             }            //结束分隔符            byte[] trailer = System.Text.Encoding.ASCII.GetBytes("\r\n--" + boundary + "--\r\n");            rs.Write(trailer, 0, trailer.Length);            rs.Close();             WebResponse wresp = null;            try            {                wresp = request.GetResponse();                System.IO.Stream stream2 = wresp.GetResponseStream();                System.IO.StreamReader reader2 = new System.IO.StreamReader(stream2);                responseStr = reader2.ReadToEnd();             }            catch            {             }            finally            {                request = null;            }             Response.Write(responseStr); ;