用C#连接SFTP服务器并进行上传下载文件

1、使用软件连接可采用WinSCP进行：

文件协议选择SFTP，端口号默认22

2、使用C#代码操作

参考：http://www.cnblogs.com/binw/p/4065642.html

主要引用第三方库Tamir.SharpSSH.dll，同时还要引用DiffieHellman.dll、Org.Mentalis.Security.dll

clsSFTPHelper.cs

 using System;
 using Tamir.SharpSsh.jsch;
 using System.Collections;

 public class clsSFTPHelper
 {
     private Session m_session;
     private Channel m_channel;
     private ChannelSftp m_sftp;

     //host:sftp地址   user：用户名   pwd：密码
     public clsSFTPHelper(string server, string user, string pwd, int port)
     {
         JSch jsch = new JSch();
         m_session = jsch.getSession(user, server, port);
         MyUserInfo ui = new MyUserInfo();
         ui.setPassword(pwd);
         m_session.setUserInfo(ui);
     }

     //SFTP连接状态
     public bool Connected { get { return m_session.isConnected(); } }

     //连接SFTP
     public bool Connect()
     {
         try
         {
             if (!Connected)
             {
                 m_session.connect();
                 m_channel = m_session.openChannel("sftp");
                 m_channel.connect();
                 m_sftp = (ChannelSftp)m_channel;
             }
             return true;
         }
         catch (Exception ex)
         {
             throw ex;
         }
     }

     //断开SFTP
     public void Disconnect()
     {
         if (Connected)
         {
             m_channel.disconnect();
             m_session.disconnect();
         }
     }

     //SFTP存放文件
     public bool Put(string localPath, string remotePath)
     {
         try
         {
             Tamir.SharpSsh.java.String src = new Tamir.SharpSsh.java.String(localPath);
             Tamir.SharpSsh.java.String dst = new Tamir.SharpSsh.java.String(remotePath);
             m_sftp.put(src, dst);
             return true;
         }
         catch (Exception ex)
         {
             throw ex;
         }
     }

     //SFTP获取文件
     public bool Get(string remotePath, string localPath)
     {
         try
         {
             Tamir.SharpSsh.java.String src = new Tamir.SharpSsh.java.String(remotePath);
             Tamir.SharpSsh.java.String dst = new Tamir.SharpSsh.java.String(localPath);
             m_sftp.get(src, dst);
             return true;
         }
         catch
         {
             return false;
         }
     }
     //删除SFTP文件
     public bool Delete(string remoteFile)
     {
         try
         {
             m_sftp.rm(remoteFile);
             return true;
         }
         catch
         {
             return false;
         }
     }

     //获取SFTP文件列表
     public ArrayList GetFileList(string remotePath, string fileType)
     {
         try
         {
             Tamir.SharpSsh.java.util.Vector vvv = m_sftp.ls(remotePath);
             ArrayList objList = new ArrayList();
             foreach (Tamir.SharpSsh.jsch.ChannelSftp.LsEntry qqq in vvv)
             {
                 string sss = qqq.getFilename();
                 if (sss.Length > (fileType.Length + ) && fileType == sss.Substring(sss.Length - fileType.Length))
                 { objList.Add(sss); }
                 else { continue; }
             }

             return objList;
         }
         catch
         {
             return null;
         }
     }

     //登录验证信息
     public class MyUserInfo : UserInfo
     {
         String passwd;
         public String getPassword() { return passwd; }
         public void setPassword(String passwd) { this.passwd = passwd; }

         public String getPassphrase() { return null; }
         public bool promptPassphrase(String message) { return true; }

         public bool promptPassword(String message) { return true; }
         public bool promptYesNo(String message) { return true; }
         public void showMessage(String message) { Console.WriteLine(message); }

     }
 }

clsSFTPHelper.cs

Program.cs

 using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;

 namespace SFTPTest
 {
     class Program
     {
         static void Main(string[] args)
         {
             clsSFtpUpload objSFtpUpload = new clsSFtpUpload();
             objSFtpUpload.SFtpUpload();
         }
     }

     class clsSFtpUpload
     {
         public bool SFtpUpload()
         {
             bool bolReturn = false;
             string strFileName = @"D:\test.edi";

             try
             {
                 clsSFTPHelper objSFtp = new clsSFTPHelper("SFtp IP", "UserName", "PAW", );
                 //SFtp IP:服务器的IP，UserName：登录名，PAW：密码
                 objSFtp.Connect();
                 if (objSFtp.Connected)
                 {
                     Console.Write("Connect Succeed!");
                     if(objSFtp.Get("/test/test.edi", strFileName))//down Get(RemotePath,LocalPath)
                     {
                         Console.Write("Download Succeed!");
                     }
                     if (objSFtp.Put(strFileName,"/test/test.edi"))//upload Put(LocalPath,RemotePath)
                     {
                         Console.Write("Download Succeed!");
                     }
                 }
                 objSFtp.Disconnect();

                 bolReturn = true;
             }
             catch (Exception ex)
             {
                 Console.Write("Exception: " + ex.ToString());
                 bolReturn = false;
             }
             return bolReturn;
         }
     }
 }

Program.cs