请问一下我要读取ftp上面的一个文件应该怎么实现啊

[wdkb]

如题,各位帮帮忙,急用的

[aspirerME]

import sun.net.*;
import sun.net.ftp.*;

class SFtpClient extends FtpClient
{

public boolean connect()
{
try
{
openServer(hostname,port);
login(username,password);
binary();
}
catch(FtpLoginException e)
{
return false;
}
catch (IOException e)
{
return false;
}
catch(SecurityException e)
{
return false;
}

return true;
}

public boolean getFormServer(String filename)
{
try
{
int ch;
String filepath = tempDir + filename;
File file = new File(filepath);
RandomAccessFile getFile = new RandomAccessFile(file,"rw");
getFile.seek(0);
TelnetInputStream get = get(filename);
DataInputStream put = new DataInputStream(get);

while((ch=put.read()) >= 0)
{
getFile.write(ch);
}

put.close();
get.close();
getFile.close();

return true;
}
catch(Exception e)
{
e.printStackTrace();
return false;
}
}































}