asp.net 操作FTP作为数据中转-Helper.cs

public class SFTPHelper
{
private Session m_session;
private Channel m_channel;
private ChannelSftp m_sftp;

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

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

}

public bool Connected { get { return m_session.isConnected(); } }

public bool Connect()
{
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;
}
}

public void Disconnect()
{
if (Connected)
{
m_channel.disconnect();
m_session.disconnect();
}
}

public bool Put(string localPath, string remotePath)
{
try
{
Tamir.SharpSsh.java.String src=new Tamir.SharpSsh.java.String(localPath);
Tamir.SharpSsh.java.String dst=new Tamir.SharpSsh.java.String(remotePath);
m_sftp.put(src,dst);
return true;
}
catch
{
return false;
}
}

public bool Get(string remotePath, string localPath)
{
try
{
Tamir.SharpSsh.java.String src = new Tamir.SharpSsh.java.String(remotePath);
Tamir.SharpSsh.java.String dst = new Tamir.SharpSsh.java.String(localPath);
m_sftp.get(src, dst);
return true;
}
catch
{
return false;
}
}

public bool Delete(string remoteFile)
{
try
{
m_sftp.rm(remoteFile);
return true;
}
catch
{
return false;
}
}

public bool Remove(string sourcePath, string deskPath)
{
try
{
m_sftp.symlink(sourcePath, deskPath);
return true;
}
catch
{
return false;
}
}

public ArrayList GetFileList(string remotePath, string fileType)
{
try
{
Tamir.SharpSsh.java.util.Vector vvv = m_sftp.ls(remotePath);
ArrayList objList = new ArrayList();
foreach (Tamir.SharpSsh.jsch.ChannelSftp.LsEntry qqq in vvv)
{
string sss=qqq.getFilename();
if (sss.Length > (fileType.Length + 1) && fileType == sss.Substring(sss.Length - fileType.Length))
{ objList.Add(sss); }
else { continue; }
}

return objList;
}
catch
{
return null;
}
}

public class MyUserInfo : UserInfo
{
String passwd;
public String getPassword() { return passwd; }
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 void showMessage(String message) { }
}

}