C# 通过 Renci.SshNet 实现SFTP数据传输

using System;
using System.Collections;
using System.IO;

using Renci.SshNet;

/************************描述 SFTP操作类******************************************
**创建者  : CQH
**创建时间: 2014-03-11
**描述    : SFTP操作类
**注意    : 所有远程目录或路径可包含工作目录(sftp.WorkingDirectory)，此时路径以"/"开头；也可以不包含工作目录，此时路径不以"/"开头
** 履历   ：No.         日期           修改人                 描述
*********************************************************************************/

namespace IF.Utility
{
/// <summary>
/// SFTP操作类
/// </summary>
public class SFTPOperation
{
#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 SFTPOperation(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)
{
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)
{
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)
{
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)
{
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)
{
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)
{
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)
{
throw new Exception(string.Format("SFTP文件移动失败，原因：{0}", ex.Message));
}
}
#endregion

}

}

private void btn_Start_Click(object sender, EventArgs e)
{
//var test = new SFTPOperation("172.28.103.9", "22", "sftp02", "sftp02");
var test = new SFTPOperation("172.28.103.9", "22", "sftp01", "sftp01");
// 上传文件
test.Put("D:/Download/ResourceSharp/test.txt", "china/in/test.txt");
//// 获取文件列表
//var list = test.GetFileList("china/in", "zip");
//foreach (var name in list)
//{
//    // 获取文件
//    test.Get("china/in/" , "D:/Download/ResourceSharp/" + name);
//    Console.WriteLine(name);
//}
//// 删除文件
//test.Delete("china/in/aaa.txt");
//// 移动文件
//test.Move("china/in/test.txt", "china/test.txt");

}