FileUpload上传至FTP

1、获取file文件流之后，直接保存

var file = Request.Files["upLoadExcel"];

file.SaveAs(Server.MapPath("/") + @"ContentUpload" + file.FileName);

2、转变为流，再上传至ftp，参考：http://blog.csdn.net/qucooln/article/details/6168352

try
            {
                var file = Request.Files["upLoadExcel"];
                var fileName = GetFileName(file.FileName);
                FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://192.168.1.21:21/" + fileName));
                try
                {
                    reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
                    reqFTP.Credentials = new NetworkCredential("sa", "sa");
                    Stream requestStream = reqFTP.GetRequestStream();
                    byte[] buffer = new byte[file.ContentLength];
                    file.InputStream.Read(buffer, 0, file.ContentLength);
                    requestStream.Write(buffer, 0, buffer.Length);
                    requestStream.Close();

                    FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
                    response.Close();
                }
                catch (Exception ex)
                {
                    reqFTP.Abort();
                }

                return Json(new { Success = true, FileUrl = "http://192.168.1.21:7878/" + fileName }, JsonRequestBehavior.AllowGet);
                //file.SaveAs(Server.MapPath("/") + @"ContentUpload" + fileName);
                //return Json(new { Success = true, FileUrl = "Content/Upload/" + fileName }, JsonRequestBehavior.AllowGet);
            }
            catch(Exception err)
            {
                return Json(new { Success = false, Msg = err.Message }, JsonRequestBehavior.AllowGet);
            }