在WEB项目中，只有wwwroot的文件，我们可以通过浏览器直接访问，但是有时候，当我们需要获取服务区该应用的其他文件，这个时候我们可以采用sftp来获取文件
sftp需要添加Renci.SshNet的支持，管理Net包
/// <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(); if (!System.IO.File.Exists(localPath)) { using (System.IO.File.Create(localPath)) { } } File.WriteAllBytes(localPath, byt); } catch (Exception ex) { } } /// <summary> /// SFTP获取文件 /// </summary> /// <param name="remotePath">远程路径</param> /// <param name="localPath">本地路径</param> public string GetLine(string remotePath) { string result = string.Empty; try { Connect(); var lines = sftp.ReadAllLines(remotePath); Disconnect(); if (lines != null && lines.Length > 0) { result = lines[lines.Length - 1]; } } catch (Exception ex) { } return result; } #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 + 1) && 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 }
程序调用：
Task tast = new Task(() => { SFTPHelper fTP_Class = new SFTPHelper("192.168.10.242", "22", "root", "likuitestpwd"); fTP_Class.Get(logDir + "/core_" + DateTime.Now.ToString("yyyy-MM-dd"), "d:\\testdir"); }); tast.Start(); tast.Wait();