commons.net.telnet使用示例

import org.apache.commons.net.telnet.TelnetClient;

import java.io.IOException;

public class TelnetDemo {

public static void main(String[] args) throws IOException {
TelnetClient telnet = new TelnetClient();
String remoteip = "10.1.1.159";
int remoteport = 9999;
telnet.connect(remoteip, remoteport);
System.out.println(telnet.isAvailable());
System.out.println(telnet.isConnected());

IOUtil.readWrite(telnet.getInputStream(), telnet.getOutputStream(),
System.in, System.out);
telnet.disconnect();
System.exit(0);
}
}

import org.apache.commons.net.io.Util;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

/**
* This is a utility class providing a reader/writer capability required
* by the weatherTelnet, rexec, rshell, and rlogin example programs.
* The only point of the class is to hold the static method readWrite
* which spawns a reader thread and a writer thread.  The reader thread
* reads from a local input source (presumably stdin) and writes the
* data to a remote output destination.  The writer thread reads from
* a remote input source and writes to a local output destination.
* The threads terminate when the remote input source closes.
* *
*/

public final class IOUtil {

public static final void readWrite(final InputStream remoteInput,
final OutputStream remoteOutput,
final InputStream localInput,
final OutputStream localOutput) {
Thread reader, writer;

reader = new Thread() {
@Override
public void run() {
int ch;

try {
while (!interrupted() && (ch = localInput.read()) != -1) {
remoteOutput.write(ch);
remoteOutput.flush();
}
} catch (IOException e) {
e.printStackTrace();
}
}
};

writer = new Thread() {
@Override
public void run() {
try {
Util.copyStream(remoteInput, localOutput);
} catch (IOException e) {
e.printStackTrace();
System.exit(1);
}
}
};

writer.setPriority(Thread.currentThread().getPriority() + 1);
writer.start();
reader.setDaemon(true);
reader.start();

try {
writer.join();
reader.interrupt();
} catch (InterruptedException e) {
e.printStackTrace();
}
}

}