问题
I am trying to download a file usng FTP within a C# console application, but even though I now the paths are correct I always get an error saying "550 file not found".
Is there any way, to return the current path (once connected to the server)?
// lade datei von FTP server
string ftpfullpath = "ftp://" + Properties.Settings.Default.FTP_Server + Properties.Settings.Default.FTP_Pfad + "/" + Properties.Settings.Default.FTP_Dateiname;
Console.WriteLine("Starte Download von: " + ftpfullpath);
using (WebClient request = new WebClient())
{
request.Credentials = new NetworkCredential(Properties.Settings.Default.FTP_User, Properties.Settings.Default.FTP_Passwort);
byte[] fileData = request.DownloadData(ftpfullpath);
using (FileStream file = File.Create(@path + "/tmp/" + Properties.Settings.Default.FTP_Dateiname))
{
file.Write(fileData, 0, fileData.Length);
file.Close();
}
Console.WriteLine("Download abgeschlossen!");
}
EDIT My mistake. Fixed the filepath, still getting the same error. But if I connect with FileZilla that's the exact file path.
回答1:
Finally found a solution by using System.Net.FtpClient (https://netftp.codeplex.com/releases/view/95632) and using the following code.
// aktueller pfad
string apppath = Directory.GetCurrentDirectory();
Console.WriteLine("Bereite Download von FTP Server vor!");
using (var ftpClient = new FtpClient())
{
ftpClient.Host = Properties.Settings.Default.FTP_Server;
ftpClient.Credentials = new NetworkCredential(Properties.Settings.Default.FTP_User, Properties.Settings.Default.FTP_Passwort);
var destinationDirectory = apppath + "\\Input";
ftpClient.Connect();
var destinationPath = string.Format(@"{0}\{1}", destinationDirectory, Properties.Settings.Default.FTP_Dateiname);
Console.WriteLine("Starte Download von " + Properties.Settings.Default.FTP_Dateiname + " nach " + destinationPath);
using (var ftpStream = ftpClient.OpenRead(Properties.Settings.Default.FTP_Pfad + "/" + Properties.Settings.Default.FTP_Dateiname))
using (var fileStream = File.Create(destinationPath , (int)ftpStream.Length))
{
var buffer = new byte[8 * 1024];
int count;
while ((count = ftpStream.Read(buffer, 0, buffer.Length)) > 0)
{
fileStream.Write(buffer, 0, count);
}
}
}
回答2:
I think your filename is wrong. Your first line writes a different name than what you set to ftpfullpath. You us FTP_Dateiname on the first line but FTP_Pfad when you set ftpfullpath.
To see what's actually happening move your first line after 'string ftpfullpath...')
and change it to Console.WriteLine("Starte Download von: " + ftpfullpath);
来源:https://stackoverflow.com/questions/28132628/c-sharp-single-file-ftp-download