如何上传图像 ftp 服务器 asp.net mvc

Question

我想使用 ftp 帐户上传图像。我的代码是这样的。但是当我选择图像并提交时，它说“找不到文件'C:\Program Files (x86)\IIS Express\picture.jpg'。” 我知道我的图像在我的桌面上，我从那里选择。如果我手动复制我的图像这个 IIS 文件夹，它会上传，但这是不明智的。我必须在我想要的地方选择我的形象。但它正在 IIS Express 文件夹中查找。

      [HttpPost, ValidateInput(false)]
    public ActionResult Insert(Press model, HttpPostedFileBase uploadfile)
    {
       ...........
       ...........
       ...........
       ...........

            if (uploadfile.ContentLength > 0)
            {
                string fileName = Path.Combine(uploadfile.FileName);
                var fileInf = new FileInfo(fileName);
                var reqFtp =
                    (FtpWebRequest)
                        FtpWebRequest.Create(
                            new Uri("ftp://ftp.adres.com" + fileInf.Name));
                reqFtp.Credentials = new NetworkCredential(username, password);
                reqFtp.KeepAlive = false;
                reqFtp.Method = WebRequestMethods.Ftp.UploadFile;
                reqFtp.UseBinary = true;
                reqFtp.ContentLength = uploadfile.ContentLength;
                int bufferlength = 2048;
                byte[] buff = new byte[bufferlength];
                int contentLen;
                FileStream fs = fileInf.OpenRead();

                try
                {
                    Stream strm = reqFtp.GetRequestStream();
                    contentLen = fs.Read(buff, 0, bufferlength);
                    while (contentLen != 0)
                    {
                        strm.Write(buff, 0, contentLen);
                        contentLen = fs.Read(buff, 0, bufferlength);
                    }
                    strm.Close();
                    fs.Close();
                }
                catch (Exception ex)
                {

                }

            }
       ...........
       ...........
       ...........
       ...........
            return View();
        }
    }

Answer 1

我找到了解决我的问题的方法，我想在这里分享，也许一个人可以受益

 void UploadToFtp(HttpPostedFileBase uploadfile)
    {
        var uploadurl = "ftp://ftp.adress.com/";
        var uploadfilename = uploadfile.FileName;
        var username = "ftpusername";
        var password = "ftppassword";
        Stream streamObj = uploadfile.InputStream;
        byte[] buffer = new byte[uploadfile.ContentLength];
        streamObj.Read(buffer, 0, buffer.Length);
        streamObj.Close();
        streamObj = null;
        string ftpurl = String.Format("{0}/{1}", uploadurl, uploadfilename);
        var requestObj = FtpWebRequest.Create(ftpurl) as FtpWebRequest;
        requestObj.Method = WebRequestMethods.Ftp.UploadFile;
        requestObj.Credentials = new NetworkCredential(username, password);
        Stream requestStream = requestObj.GetRequestStream();
        requestStream.Write(buffer, 0, buffer.Length);
        requestStream.Flush();
        requestStream.Close();
        requestObj = null;
    }