/// <summary>
/// SFTP文件上传下载
/// </summary>
public class SFtp
{
/// <summary>
/// http://www.example-code.com/csharp/sftp_readDir.asp
/// </summary>
Chilkat.SFtp sftp = new Chilkat.SFtp();
/// <summary>
/// 连接
/// </summary>
/// <returns></returns>
public bool Connection()
{
//尝试连接2次
int tryCount = 0;
while (tryCount++ < 2)
{
bool conn = TryConnection();
if (conn == true)
return true;
}
return false;
}
/// <summary>
/// 尝试连接
/// </summary>
/// <returns></returns>
private bool TryConnection()
{
bool success = false;
sftp.ConnectTimeoutMs = 1000;
sftp.IdleTimeoutMs = 5000;
// Any string automatically begins a fully-functional 30-day trial.
success = sftp.UnlockComponent(AppConfig.GetValueByKey("sftpKey"));
if (success != true)
{
LogHelper.Write("SFTP-----------注册失败！\r\n{0}", sftp.LastErrorText);
return false;
}
// Connect to the SSH server.
// The standard SSH port = 22
// The hostname may be a hostname or IP address.
string hostname = AppConfig.GetValueByKey("host");
int port = Convert.ToInt32(AppConfig.GetValueByKey("port"));
success = sftp.Connect(hostname, port);
if (success != true)
{
LogHelper.Write("SFTP-----------服务拒绝连接！\r\n{0}", sftp.LastErrorText);
return false;
}
string username = AppConfig.GetValueByKey("username");
string pwd = AppConfig.GetValueByKey("pwd");
success = sftp.AuthenticatePw(username, pwd);
if (success != true)
{
LogHelper.Write("SFTP-----------服务名或密码错误！\r\n{0}", sftp.LastErrorText);
return false;
}
//After authenticating, the SFTP subsystem must be initialized:
success = sftp.InitializeSftp();
if (success != true)
{
LogHelper.Write("SFTP----------- initialized Faile！\r\n{0}", sftp.LastErrorText);
return false;
}
return success;
}
/// <summary>
/// 创建目录
/// </summary>
/// <param name="folder">要创建的远程目录 eg:./aa/cc</param>
public void MakeDirectory(string folder)
{
try
{
sftp.CreateDir(folder);
}
catch (Exception ex)
{
Log.LogHelper.Write("SFTP创建目录------------------ {0}", ex.ToString());
}
}
/// <summary>
/// 断开连接
/// </summary>
public void DisConnection()
{
try
{
if (sftp != null)
{
sftp.Disconnect();
}
}
catch (Exception ex)
{
Log.LogHelper.Write("SFTP关闭连接------------------ {0}", ex.ToString());
}
}
/// <summary>
/// 下载文件
/// </summary>
/// <param name="remoteFilePath">远程文件路径 eg: ./aa/hamlet.xml</param>
/// <param name="localFilePath">本地文件路径 eg: c:/temp/hamlet.xml</param>
public bool DownFile(string remoteFilePath, string localFilePath)
{
bool success = false;
// Note: The remote filepath may be an absolute filepath,
// a relative filepath, or simply a filename.
// Relative filepaths are always relative to the home directory
// of the SFTP/SSH user account. There is no such thing
// as "current remote directory" in the SFTP protocol.
// A filename with no path implies that the file is located
// in the SFTP user account's home directory.
success = sftp.DownloadFileByName(remoteFilePath, localFilePath);
if (success != true)
{
LogHelper.Write("SFTP-----------文件下载\r\n{0}", sftp.LastErrorText);
}
return success;
}
/// <summary>
/// 下载文件
/// </summary>
/// <param name="remoteFilePath">远程文件路径 eg: ./aa/hamlet.xml</param>
private void Rename(string remoteFilePath)
{
bool success = false;
// Rename the file or directory:
success = sftp.RenameFileOrDir(remoteFilePath + ".bak", remoteFilePath);
if (success != true)
{
LogHelper.Write("SFTP-----------文件改名称\r\n名称是否已存在或{0}", sftp.LastErrorText);
}
}
/// <summary>
/// 下载文件
/// </summary>
/// <param name="remoteFilePath">远程文件路径 eg: ./aa/hamlet.xml</param>
/// <param name="localFilePath">本地文件路径 eg: c:/temp/hamlet.xml</param>
/// <param name="remoteBakFilePath">远程备份目录 eg: ./ddd</param>
public bool DownFileAndBak(string remoteFilePath, string localFilePath,string remoteBakFilePath)
{
//下载
if (DownFile(remoteFilePath, localFilePath))
{
//备份：上传
if (UpLoadFile(remoteBakFilePath, localFilePath,false))
{
//删除原件
if (DeleteFile(remoteFilePath))
{
return true;
}
}
}
return false;
}
/// <summary>
/// 文件上传
/// </summary>
/// <param name="remoteFilePath">远程文件路径 eg: ./aa/hamlet.xml</param>
/// <param name="localFilePath">本地文件路径 eg: c:/temp/hamlet.xml</param>
/// <returns></returns>
public bool UpLoadFile(string remoteFilePath, string localFilePath, bool bAppendBak)
{
bool success = false;
string tmpRemoteFilePath = remoteFilePath;
if (bAppendBak)
{
tmpRemoteFilePath += ".bak";
}
success = sftp.UploadFileByName(tmpRemoteFilePath, localFilePath);
if (success != true)
{
LogHelper.Write("SFTP-----------上传文件\r\n{0}", sftp.LastErrorText);
}
if (success && bAppendBak)
{
Rename(remoteFilePath);
}
return success;
}
/// <summary>
/// 删除远程文件
/// </summary>
/// <param name="remoteFilePath">远程文件路径 eg: ./aa/hamlet.xml</param>
/// <returns></returns>
public bool DeleteFile(string remoteFilePath)
{
// Delete a file on the server:
bool success = false;
success = sftp.RemoveFile(remoteFilePath);
if (success != true)
{
LogHelper.Write("SFTP-----------删除文件\r\n{0}", sftp.LastErrorText);
}
return success;
}
/// <summary>
/// 删除远程文件
/// </summary>
/// <param name="remoteFilePath">远程目录路径 eg: ./ddd</param>
/// <returns></returns>
public bool DeleteDir(string remoteDirPath)
{
// Delete a file on the server:
bool success = false;
success = sftp.RemoveDir(remoteDirPath);
if (success != true)
{
LogHelper.Write("SFTP-----------删除文件\r\n{0}", sftp.LastErrorText);
}
return success;
}
/// <summary>
/// 读取远程目录内所有文件
/// </summary>
/// <param name="remoteDirName">远程文件路径 eg: ./ddd</param>
/// <returns></returns>
private List<string> GetAllFileNames(string remoteDirName)
{
List<string> list = new List<string>();
bool success = false;
string handle;
handle = sftp.OpenDir(remoteDirName);
if (handle == null)
{
LogHelper.Write("SFTP-----------读取目录所有文件\r\n{0}", sftp.LastErrorText);
return null;
}
// Download the directory listing:
Chilkat.SFtpDir dirListing = null;
dirListing = sftp.ReadDir(handle);
if (dirListing == null)
{
LogHelper.Write("SFTP-----------读取目录所有文件\r\n{0}", sftp.LastErrorText);
return null;
}
int n = dirListing.NumFilesAndDirs;
for (int i = 0; i <= n - 1; i++)
{
Chilkat.SFtpFile fileObj = null;
fileObj = dirListing.GetFileObject(i);
switch (fileObj.FileType)
{
case "directory":
break;
case "regular":
if (System.Text.RegularExpressions.Regex.IsMatch(fileObj.Filename, AppConfig.GetValueByKey("ext")))
list.Add(fileObj.Filename);
break;
}
}
// Close the directory
success = sftp.CloseHandle(handle);
if (success != true)
{
LogHelper.Write("SFTP-----------读取目录所有文件\r\n{0}", sftp.LastErrorText);
return null;
}
return list;
}
/// <summary>
/// 收取指定文件夹下所有文件
/// </summary>
/// <param name="remoteDirName">远程目录路径 eg: ./ddd</param>
/// <param name="localDirName">本地目录路径 eg: D:/ddd</param>
/// <param name="remoteBakFilePath">远程备份目录 eg: ./ddd</param>
public List<string> DownAllFilesByDirName(string remoteDirName,string localDirName,string remoteBakFilePath = null)
{
List<string> list = GetAllFileNames(remoteDirName);
List<string> lsRetuen = new List<string>();
if (list != null)
{
foreach (string s in list)
{
if (string.IsNullOrEmpty("DownFileAndBak"))
{
if (DownFile(remoteDirName + "/" + s, localDirName + "/" + s))
{
lsRetuen.Add(s);
}
}
else
{
if (DownFileAndBak(remoteDirName + "/" + s, localDirName + "/" + s, remoteBakFilePath + "/" + s))
{
lsRetuen.Add(s);
}
}
}
}
return lsRetuen;
}
}
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