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 + 1) && 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); }

    }
}

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", 22);
                //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;
        }        
    }
}