"534策略要求C#“FtpWebRequest上载的FtpWebRequest FTP失败

Question

当我试图将文件上传到SFTP服务器时，它会显示一个错误。

这是我的代码：

string fileNameOnly = Path.GetFileName(uploadingFile);

FtpWebRequest request = (FtpWebRequest)WebRequest.Create(HostAddress+ "/test1");
request.Method = WebRequestMethods.Ftp.UploadFile;

request.Credentials = new NetworkCredential(UserId, Password);

StreamReader sourceStream = new StreamReader(@uploadingFile);
byte[] fileContents = Encoding.UTF8.GetBytes(sourceStream.ReadToEnd());
sourceStream.Close();
request.ContentLength = fileContents.Length;
filesize = ConvertBytesToMegabytes(request.ContentLength);
Console.WriteLine("hello,{0}", filesize);
// Console.WriteLine("hellosss,{0}", request.ContentLength);
Stream requestStream = request.GetRequestStream(); 
Console.WriteLine("here,{0}", requestStream);

requestStream.Write(fileContents, 0, fileContents.Length);
filesizedownloaded = ConvertBytesToMegabytes(requestStream.Length);
Console.WriteLine("hellosss,{0}", filesizedownloaded);
worker.ReportProgress(Convert.ToInt32((Convert.ToInt32(filesizedownloaded) / filesize) * 100));

requestStream.Close();
FtpWebResponse response = (FtpWebResponse)request.GetResponse();
FilesDetails.SelectedFileContent = "";
Console.WriteLine("Upload File Complete, status {0}", response.StatusDescription);
MessageBox.Show("File Uploaded!", " File");
response.Close();

我在Stream requestStream = request.GetRequestStream();得到了一个例外

错误是：

远程服务器返回一个错误：( 534 ) 534策略需要SSL"

“

Answer 1

您的服务器需要加密连接。

若要启用加密连接，请设置FtpWebRequest.EnableSsl

request.EnableSsl = true;

您的代码还有其他问题，而且它不必要地复杂。

有关C#的干净FTP代码，请参见Upload and download a file to/from FTP server in C#/.NET。