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string boundary = "--------" + DateTime.Now.Ticks.ToString();
HttpWebRequest webrequest = (HttpWebRequest)WebRequest.Create(uri);
webrequest.CookieContainer = cookies;
webrequest.KeepAlive = true;
webrequest.ProtocolVersion = HttpVersion.Version10;
webrequest.ContentType = "multipart/form-data; boundary=" + boundary;
webrequest.Method = "POST";
webrequest.Accept = "text/html, */*";
webrequest.UserAgent = "Mozilla/3.0 (compatible; Indy Library)";
StringBuilder sb = new StringBuilder();
sb.Append(boundary);
sb.Append("\r\n");
sb.Append("Content-Disposition: form-data; name=\"safeCode\"");\\此参数无法接收到
sb.Append("\r\n");
sb.Append("Content-Type: text/plain");
sb.Append("\r\n");
sb.Append("Content-Transfer-Encoding: quoted-printable");
sb.Append("\r\n");
sb.Append("\r\n");
sb.Append("48555");
sb.Append("\r\n");
sb.Append(boundary);
sb.Append("\r\n");
sb.Append("Content-Disposition: form-data; name=\"filePath\"");\\此参数无法接收到
sb.Append("\r\n");
sb.Append("Content-Type: text/plain");
sb.Append("\r\n");
sb.Append("Content-Transfer-Encoding: quoted-printable");
sb.Append("\r\n");
sb.Append("\r\n");
sb.Append("/1/2012/5/767/767_O.docx");
sb.Append("\r\n");
sb.Append(boundary);
sb.Append("\r\n");
sb.Append("Content-Disposition: form-data; name=\"files\";");\\此参数无法接收到
sb.Append("filename=\"");
sb.Append("767_O.docx.jxup");
sb.Append("\"");
sb.Append("\r\n");
sb.Append("Content-Type: application/octet-stream");
sb.Append("\r\n");
sb.Append("Content-Transfer-Encoding: binary");
sb.Append("\r\n");
sb.Append("\r\n");
string postHeader = sb.ToString();
byte[] postHeaderBytes = Encoding.UTF8.GetBytes(postHeader);
byte[] boundaryBytes = Encoding.ASCII.GetBytes("\r\n----------" + boundary + "\r\n");
FileStream fileStream = new FileStream(uploadfile, FileMode.Open, FileAccess.Read);
long length = postHeaderBytes.Length + fileStream.Length + boundaryBytes.Length;
webrequest.ContentLength = length;
Stream requestStream = webrequest.GetRequestStream();
requestStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
byte[] buffer = new Byte[checked((uint)Math.Min(32768, (int)fileStream.Length))];
int bytesRead = 0;
while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
requestStream.Write(buffer, 0, bytesRead);
requestStream.Write(boundaryBytes, 0, boundaryBytes.Length);
webrequest.Timeout = 1000000;
WebResponse responce = webrequest.GetResponse();
Stream s = responce.GetResponseStream();
StreamReader sr = new StreamReader(s);
string str = sr.ReadToEnd();
fileStream.Close();
requestStream.Close();
sr.Close();
s.Close();
responce.Close();