C#通过SFTP协议操作文件

 public classSFTPHelper
    {
        privateSession m_session;
        privateChannel m_channel;
        privateChannelSftp m_sftp;

        //host:sftp地址   user：用户名   pwd：密码        
        public SFTPHelper(string host, string user, stringpwd)
        {
            string[] arr = host.Split(':');
            string ip = arr[0];
            int port = 22;
            if (arr.Length > 1) port = Int32.Parse(arr[1]);

            JSch jsch = newJSch();
            m_session =jsch.getSession(user, ip, port);
            MyUserInfo ui = newMyUserInfo();
            ui.setPassword(pwd);
            m_session.setUserInfo(ui);

        }

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

        //连接SFTP        
        public boolConnect()
        {
            try{
                if (!Connected)
                {
                    m_session.connect();
                    m_channel = m_session.openChannel("sftp");
                    m_channel.connect();
                    m_sftp =(ChannelSftp)m_channel;
                }
                return true;
            }
            catch{
                return false;
            }
        }

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

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

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

        //获取SFTP文件列表        
        public ArrayList GetFileList(string remotePath, stringfileType)
        {
            try{
                Tamir.SharpSsh.java.util.Vector vvv =m_sftp.ls(remotePath);
                ArrayList objList = newArrayList();
                foreach (Tamir.SharpSsh.jsch.ChannelSftp.LsEntry qqq invvv)
                {
                    string sss =qqq.getFilename();
                    if (sss.Length > (fileType.Length + 1) && fileType == sss.Substring(sss.Length -fileType.Length))
                    { objList.Add(sss); }
                    else { continue; }
                }

                returnobjList;
            }
            catch{
                return null;
            }
        }


        //登录验证信息        
        public classMyUserInfo : UserInfo
        {
            String passwd;
            public String getPassword() { returnpasswd; }
            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 voidshowMessage(String message) { }
        }