SFTP上传下载(C#)

sftp是ftp协议的升级版本，是牺牲上传速度为代价，换取安全性能，本人开始尝试使用Tamir.SharpSSH.dll但它对新版本的openssh 不支持，所有采用Ssh.Net方式 需要依赖：Renci.SshNet.dll 链接: http://pan.baidu.com/s/1nvuHFVN 密码: hh49

     /// <summary>
     /// SFTP操作类
     /// </summary>
     public class SFTPHelper
     {
         #region 字段或属性
         private SftpClient sftp;
         /// <summary>
         /// SFTP连接状态
         /// </summary>
         public bool Connected { get { return sftp.IsConnected; } }
         #endregion

         #region 构造
         /// <summary>
         /// 构造
         /// </summary>
         /// <param name="ip">IP</param>
         /// <param name="port">端口</param>
         /// <param name="user">用户名</param>
         /// <param name="pwd">密码</param>
         public SFTPHelper(string ip, string port, string user, string pwd)
         {
             sftp = new SftpClient(ip, Int32.Parse(port), user, pwd);
         }
         #endregion

         #region 连接SFTP
         /// <summary>
         /// 连接SFTP
         /// </summary>
         /// <returns>true成功</returns>
         public bool Connect()
         {
             try
             {
                 if (!Connected)
                 {
                     sftp.Connect();
                 }
                 return true;
             }
             catch (Exception ex)
             {
                 // TxtLog.WriteTxt(CommonMethod.GetProgramName(), string.Format("连接SFTP失败，原因：{0}", ex.Message));
                 throw new Exception(string.Format("连接SFTP失败，原因：{0}", ex.Message));
             }
         }
         #endregion

         #region 断开SFTP
         /// <summary>
         /// 断开SFTP
         /// </summary>
         public void Disconnect()
         {
             try
             {
                 if (sftp != null && Connected)
                 {
                     sftp.Disconnect();
                 }
             }
             catch (Exception ex)
             {
                 // TxtLog.WriteTxt(CommonMethod.GetProgramName(), string.Format("断开SFTP失败，原因：{0}", ex.Message));
                 throw new Exception(string.Format("断开SFTP失败，原因：{0}", ex.Message));
             }
         }
         #endregion

         #region SFTP上传文件
         /// <summary>
         /// SFTP上传文件
         /// </summary>
         /// <param name="localPath">本地路径</param>
         /// <param name="remotePath">远程路径</param>
         public void Put(string localPath, string remotePath)
         {
             try
             {
                 using (var file = File.OpenRead(localPath))
                 {
                     Connect();
                     sftp.UploadFile(file, remotePath);
                     Disconnect();
                 }
             }
             catch (Exception ex)
             {
                 // TxtLog.WriteTxt(CommonMethod.GetProgramName(), string.Format("SFTP文件上传失败，原因：{0}", ex.Message));
                 throw new Exception(string.Format("SFTP文件上传失败，原因：{0}", ex.Message));
             }
         }
         #endregion

         #region SFTP获取文件
         /// <summary>
         /// SFTP获取文件
         /// </summary>
         /// <param name="remotePath">远程路径</param>
         /// <param name="localPath">本地路径</param>
         public void Get(string remotePath, string localPath)
         {
             try
             {
                 Connect();
                 var byt = sftp.ReadAllBytes(remotePath);
                 Disconnect();
                 File.WriteAllBytes(localPath, byt);
             }
             catch (Exception ex)
             {
                 // TxtLog.WriteTxt(CommonMethod.GetProgramName(), string.Format("SFTP文件获取失败，原因：{0}", ex.Message));
                 throw new Exception(string.Format("SFTP文件获取失败，原因：{0}", ex.Message));
             }

         }
         #endregion

         #region 删除SFTP文件
         /// <summary>
         /// 删除SFTP文件
         /// </summary>
         /// <param name="remoteFile">远程路径</param>
         public void Delete(string remoteFile)
         {
             try
             {
                 Connect();
                 sftp.Delete(remoteFile);
                 Disconnect();
             }
             catch (Exception ex)
             {
                 // TxtLog.WriteTxt(CommonMethod.GetProgramName(), string.Format("SFTP文件删除失败，原因：{0}", ex.Message));
                 throw new Exception(string.Format("SFTP文件删除失败，原因：{0}", ex.Message));
             }
         }
         #endregion

         #region 获取SFTP文件列表
         /// <summary>
         /// 获取SFTP文件列表
         /// </summary>
         /// <param name="remotePath">远程目录</param>
         /// <param name="fileSuffix">文件后缀</param>
         /// <returns></returns>
         public ArrayList GetFileList(string remotePath, string fileSuffix)
         {
             try
             {
                 Connect();
                 var files = sftp.ListDirectory(remotePath);
                 Disconnect();
                 var objList = new ArrayList();
                 foreach (var file in files)
                 {
                     string name = file.Name;
                     if (name.Length > (fileSuffix.Length + ) && fileSuffix == name.Substring(name.Length - fileSuffix.Length))
                     {
                         objList.Add(name);
                     }
                 }
                 return objList;
             }
             catch (Exception ex)
             {
                 // TxtLog.WriteTxt(CommonMethod.GetProgramName(), string.Format("SFTP文件列表获取失败，原因：{0}", ex.Message));
                 throw new Exception(string.Format("SFTP文件列表获取失败，原因：{0}", ex.Message));
             }
         }
         #endregion

         #region 移动SFTP文件
         /// <summary>
         /// 移动SFTP文件
         /// </summary>
         /// <param name="oldRemotePath">旧远程路径</param>
         /// <param name="newRemotePath">新远程路径</param>
         public void Move(string oldRemotePath, string newRemotePath)
         {
             try
             {
                 Connect();
                 sftp.RenameFile(oldRemotePath, newRemotePath);
                 Disconnect();
             }
             catch (Exception ex)
             {
                 // TxtLog.WriteTxt(CommonMethod.GetProgramName(), string.Format("SFTP文件移动失败，原因：{0}", ex.Message));
                 throw new Exception(string.Format("SFTP文件移动失败，原因：{0}", ex.Message));
             }
         }
         #endregion

     }