使用带有C#的SSH.NET复制或移动远程文件

本文关键字：程文件 移动 文件 复制 NET SSH | 更新日期: 2023-09-27 18:26:16

我知道我可以使用SSH.NET库的SftpClient类从SFTP服务器上传文件并将文件下载到SFTP服务器，但我不确定如何使用该类在SFTP服务器上复制或移动远程文件。我也没有在网上找到相关材料。如何使用SSH.NET库和C#将远程文件从目录a复制或移动到目录B。

更新：我还尝试使用下面的代码对SshClient类进行实验，但它什么也没做，既没有任何错误，也没有任何异常。

ConnectionInfo ConnNfo = new ConnectionInfo("FTPHost", 22, "FTPUser",
new AuthenticationMethod[]{
   // Pasword based Authentication
   new PasswordAuthenticationMethod("FTPUser","FTPPass")
   }                
   );
using (var ssh = new SshClient(ConnNfo))
{
    ssh.Connect();                
    if (ssh.IsConnected)
    {                    
         string comm = "pwd";
         using (var cmd = ssh.CreateCommand(comm))
         {
            var returned = cmd.Execute();
            var output = cmd.Result;
            var err = cmd.Error;
            var stat = cmd.ExitStatus;
         }
     }
   ssh.Disconnect();
}

在VisualStudio控制台上，我得到了以下输出。

*SshNet.Logging详细信息：1:向服务器"ChannelRequestMessage"发送消息："SSH_MSG_CHANNEL_REQUEST:#152199"。

SshNet.日志详细信息：1:从服务器接收消息："ChannelFailureMessage"："SSH_MSG_CHANNEL_FAILURE:#0"。*

使用带有C#的SSH.NET复制或移动远程文件

使用Renci的NuGet包SSH.NET，我使用以下内容：

using Renci.SshNet;
using Renci.SshNet.SftpClient;    
...
        SftpClient _sftp = new SftpClient(_host, _username, _password);

移动文件：

        var inFile = _sftp.Get(inPath);
        inFile.MoveTo(outPath);

复制文件：

       var fsIn = _sftp.OpenRead(inPath);
       var fsOut = _sftp.OpenWrite(outPath);
        int data;
        while ((data = fsIn.ReadByte()) != -1)
            fsOut.WriteByte((byte)data);
        fsOut.Flush();
        fsIn.Close();
        fsOut.Close();

除了SSH.NET的SftpClient之外，还有一个更简单的ScpClient，当我遇到SftpClient问题时它也能工作。ScpClient只有上传/下载功能，但这满足了我的用例。

上传：

using (ScpClient client = new ScpClient(host, username, password))
{
    client.Connect();
    using (Stream localFile = File.OpenRead(localFilePath))
    {
         client.Upload(localFile, remoteFilePath);
    }
}

下载：

using (ScpClient client = new ScpClient(host, username, password))
{
    client.Connect();
    using (Stream localFile = File.Create(localFilePath))
    {
         client.Download(remoteFilePath, localFile);
    }
}

可以使用SSH.NET库来移动远程文件。此处提供：https://github.com/sshnet/SSH.NET

下面是将第一个文件从一个源文件夹移动到另一个源文件文件夹的示例代码。根据FTP设置在类中设置私有变量。

using System;
using System.Linq;
using System.Collections.Generic;
using Renci.SshNet;
using Renci.SshNet.Sftp;
using System.IO;
using System.Configuration;
using System.IO.Compression;
public class RemoteFileOperations
{
    private string ftpPathSrcFolder = "/Path/Source/";//path should end with /
    private string ftpPathDestFolder = "/Path/Archive/";//path should end with /
    private string ftpServerIP = "Target IP";
    private int ftpPortNumber = 80;//change to appropriate port number
    private string ftpUserID = "FTP USer Name";//
    private string ftpPassword = "FTP Password";
    /// <summary>
    /// Move first file from one source folder to another. 
    /// Note: Modify code and add a for loop to move all files of the folder
    /// </summary>
    public void MoveFolderToArchive()
    {
        using (SftpClient sftp = new SftpClient(ftpServerIP, ftpPortNumber, ftpUserID, ftpPassword))
        {
            SftpFile eachRemoteFile = sftp.ListDirectory(ftpPathSrcFolder).First();//Get first file in the Directory            
            if(eachRemoteFile.IsRegularFile)//Move only file
            {
                bool eachFileExistsInArchive = CheckIfRemoteFileExists(sftp, ftpPathDestFolder, eachRemoteFile.Name);
                //MoveTo will result in error if filename alredy exists in the target folder. Prevent that error by cheking if File name exists
                string eachFileNameInArchive = eachRemoteFile.Name;
                if (eachFileExistsInArchive)
                {
                    eachFileNameInArchive = eachFileNameInArchive + "_" + DateTime.Now.ToString("MMddyyyy_HHmmss");//Change file name if the file already exists
                }
                eachRemoteFile.MoveTo(ftpPathDestFolder + eachFileNameInArchive);
            }           
        }
    }
    /// <summary>
    /// Checks if Remote folder contains the given file name
    /// </summary>
    public bool CheckIfRemoteFileExists(SftpClient sftpClient, string remoteFolderName, string remotefileName)
    {
        bool isFileExists = sftpClient
                            .ListDirectory(remoteFolderName)
                            .Any(
                                    f => f.IsRegularFile &&
                                    f.Name.ToLower() == remotefileName.ToLower()
                                );
        return isFileExists;
    }
}
相关文章：