使用 SSH.NET 上传到 SFTP 服务器失败并出现 SftpPathNotFoundException:'The system cannot find the path specified.'

Upload to SFTP server with SSH.NET fails with SftpPathNotFoundException: 'The system cannot find the path specified.'

我正在尝试使用 Renci 通过 SFTP 上传文件 SSH.NET。

正在连接:

正在上传:

1) 使用SftpClientUploadFile方法:

    client.UploadFile(fileStream, "/Path/" + fileName, null);

...我得到一个 Renci.SshNet.Common.SftpPathNotFoundException:'The system cannot find the path specified.'

  • 我试过对路径进行硬编码 - 结果相同。
  • 我试过使用 SftpClientWorkingDirectory - 但它转换成一串看起来像中文的字符,也不起作用。

2) 使用SftpClientBeginUploadFile方法:

    client.BeginUploadFile(fileStream, "/Path/" + fileName, asyncCallback, null, UpdateUploadProgress);

...我没有得到 errors/exceptions,但是:

  • 文件未上传

  • aSyncCallbackuploadCallback 似乎不起作用

3) 使用 FileZilla,我可以很好地上传(使用与上面完全相同的目标路径:“/Path/Filename.txt”)


我的代码:

    var connectionInfo = new ConnectionInfo(IpAddress,
                        Port,
                        UserName,
                        new PasswordAuthenticationMethod(UserName, Password),
                        new PrivateKeyAuthenticationMethod("rsa.key"));
            connectionInfo.Encoding = Encoding.Unicode;
            using (var client = new SftpClient(connectionInfo))
            {
                client.Connect();

                if (client.IsConnected)
                {
                    Console.WriteLine("SSH-client is connected");
                }
                var fileStream = new FileStream(FileMaker.GetFullyQualifiedPath(), FileMode.Open);
                client.BufferSize = 4 * 1024;
                string fileName = new FileMaker().GetFileName();
                //client.UploadFile(fileStream, "/Path/" + fileName, null);
                AsyncCallback asyncCallback = new AsyncCallback(NotifyUploadComplete);
                client.BeginUploadFile(fileStream, "/Path/" + fileName, asyncCallback, null, UpdateUploadProgress);
                client.Disconnect();
            }

回调处理程序:

    private void UpdateUploadProgress(ulong uploaded)
    {
        MainViewModel mainViewModel = (MainViewModel)System.Windows.Application.Current.FindResource("mainViewModel");
        mainViewModel.UploadProgress = uploaded;
    }

    private void NotifyUploadComplete(IAsyncResult result)
    {
        MessageBox.Show("File uploaded.", "File uploaded");
    }

更新: 我做了一个最小的例子并测试了它(相同的结果)。

使用上传文件:

var connectionInfo = new ConnectionInfo(IpAddress,
            Port,
            UserName,
            new PasswordAuthenticationMethod(UserName, Password),
            new PrivateKeyAuthenticationMethod("rsa.key"));
connectionInfo.Encoding = Encoding.Unicode;
using (var client = new SftpClient(connectionInfo))
{
    client.Connect();

    if (client.IsConnected)
    {
        Console.WriteLine("SSH-client is connected");
    }
    var fileStream = new FileStream(@"C:\File.txt", FileMode.Open);
    client.BufferSize = 4 * 1024;
    client.UploadFile(fileStream, "/SSHUsersPath/File.txt", null);
    //AsyncCallback asyncCallback = new AsyncCallback(NotifyUploadComplete);
    //client.BeginUploadFile(fileStream, "/SSHUsersPath/File.txt", asyncCallback, null, UpdateUploadProgress);
    client.Disconnect();
}

这里是请求的 FileZilla 日志文件的摘录:

2017-09-21 10:08:36 11252 1 Status: Connected to sshserv.CENSORED.com 2017-09-21 10:08:36 11252 1 Status: Retrieving directory listing... 2017-09-21 10:08:36 11252 1 Command: pwd 2017-09-21 10:08:36 11252 1 Response: Current directory is: "/SSHUsersPath" 2017-09-21 10:08:36 11252 1 Command: ls 2017-09-21 10:08:37 11252 1 Status: Listing directory /SSHUsersPath 2017-09-21 10:08:37 11252 1 Status: Directory listing of "/SSHUsersPath" successful 2017-09-21 10:08:58 11252 3 Status: Connecting to sshserv.CENSORED.com... 2017-09-21 10:08:58 11252 3 Response: fzSftp started, protocol_version=8 2017-09-21 10:08:58 11252 3 Command: open "CENSORED@sshserv.CENSORED.com" 22 2017-09-21 10:08:59 11252 3 Command: Trust new Hostkey: Once 2017-09-21 10:09:00 11252 3 Command: Pass: ***** 2017-09-21 10:09:00 11252 3 Status: Connected to sshserv.CENSORED.com 2017-09-21 10:09:00 11252 3 Status: Starting upload of C:\File.txt 2017-09-21 10:09:00 11252 3 Command: cd "/SSHUsersPath" 2017-09-21 10:09:01 11252 3 Response: New directory is: "/SSHUsersPath" 2017-09-21 10:09:01 11252 3 Command: put "C:\File.txt" "File.txt" 2017-09-21 10:09:01 11252 3 Command: local:C:\File.txt => remote:/SSHUsersPath/File.txt 2017-09-21 10:09:01 11252 3 Status: File transfer successful, transferred 4 bytes in 1 second 2017-09-21 10:09:01 11252 3 Status: Retrieving directory listing of "/SSHUsersPath"... 2017-09-21 10:09:01 11252 3 Command: ls 2017-09-21 10:09:01 11252 3 Status: Listing directory /SSHUsersPath 2017-09-21 10:09:02 11252 3 Status: Directory listing of "/SSHUsersPath" successful 2017-09-21 10:09:17 11252 1 Status: Deleting "/SSHUsersPath/File.txt" 2017-09-21 10:09:17 11252 1 Command: rm "/SSHUsersPath/File.txt" 2017-09-21 10:09:18 11252 1 Response: rm /SSHUsersPath/File.txt: OK

主要问题是:

connectionInfo.Encoding = Encoding.Unicode;

Encoding.Unicode 是 UTF-16。没有 SFTP 服务器会处理 UTF-16 编码的文件名。 SFTP 服务器应使用 UTF-8。因此 SSH.NET 默认为 Encoding.UTF8。如果使用 UTF-8 服务器损坏了文件名中的非 ASCII 字符(.Encoding 是关于文件名,而不是文件内容),那一定是因为 SFTP 损坏并使用了一些旧编码。但可以肯定的是,它不是 UTF-16。它更像是一些 ISO* 编码或 Windows-* 编码。


另一个问题是,当您使用 BeginUploadFile 时,您不会等待它完成并立即断开连接。