使用JSch在远程SSH会话上运行telnet命令

使用JSch在远程SSH会话上运行telnet命令

我知道了。

__在while循环中， line 永远不会为 null 。

为何在调试中起作用仍是一个谜。

我正在发布 新代码 。我希望它对每个想做类似事情的人都有帮助。

package Utility;import com.jcraft.jsch.Channel;import com.jcraft.jsch.JSch;import com.jcraft.jsch.JSchException;import com.jcraft.jsch.Session;import java.io.BufferedReader;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.InputStreamReader;public class JavaTelnet {    public static void main(String[] arg) {        try { System.out.println(telnetConnection(YOUR_COMMAND,YOUR_USER,YOUR_PASS,YOUR_HOST));        } catch (Exception e) { e.printStackTrace();        }    }    public static String telnetConnection(String command, String user, String password, String host) throws JSchException, Exception {      JSch jsch=new JSch();      Session session=jsch.getSession(user, host, 22);      session.setPassword(password);      // It must not be recommended, but if you want to skip host-key check,       session.setConfig("StrictHostKeyChecking", "no");      session.connect(3000);      //session.connect(30000);   // making a connection with timeout.      Channel channel=session.openChannel("shell");      channel.connect(3000);      DataInputStream dataIn = new DataInputStream(channel.getInputStream());      BufferedReader reader = new BufferedReader(new InputStreamReader(dataIn));      DataOutputStream dataOut = new DataOutputStream(channel.getOutputStream());      System.out.println("Starting telnet connection...");      dataOut.writeBytes("telnet localhost 4242rn");//      dataOut.writeBytes("enablern");      dataOut.writeBytes(command+"rn");      dataOut.writeBytes("exitrn"); //exit from telnet       dataOut.writeBytes("exitrn"); //exit from shell       dataOut.flush();      String line = reader.readLine();      String result = line +"n";        while (!(line= reader.readLine()).equals("Connection closed by foreign host")){          result += line +"n";      }      dataIn.close();      dataOut.close();      channel.disconnect();      session.disconnect();      return result;  }}

注意，该外壳是Linux外壳。在Windows中，“退出”命令应该不同