java - 在远程服务器上运行多个命令

Question

到目前为止，我已经设法连接、运行单个命令然后断开连接。我遇到的问题是此后运行第二个、第三个等命令。

public static void main(String args[]) {
        try {
            JSch js = new JSch();
            Session session = js.getSession("myuser", "myhost", 22);
            session.setPassword("mypassword");
            Properties properties = new Properties() {
                {
                    put("StrictHostKeyChecking", "no");
                }
            };
            session.setConfig(properties);
            session.connect();

            Channel channel = session.openChannel("exec");

            ChannelExec channelExec = (ChannelExec) channel;
            channelExec.setCommand("ls");
            channelExec.setErrStream(System.err);
            channelExec.connect();

            BufferedReader reader = new BufferedReader(new InputStreamReader(channelExec.getInputStream()));
            String line;
            while ((line = reader.readLine()) != null) {
                System.out.println(line);
            }

//            This part doesn't work. It causes the program to hang.
//            BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(channelExec.getOutputStream()));
//            writer.write("cd Downloads");
//            writer.write("ls");
//            reader = new BufferedReader(new InputStreamReader(channelExec.getInputStream()));
//            while ((line = reader.readLine()) != null) {
//                System.out.println(line);
//            }

            channelExec.disconnect();
            session.disconnect();

            System.out.println("Exit code: " + channelExec.getExitStatus());
        } catch (JSchException | IOException ex) {
            Logger.getLogger(Test.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

我试过使用 ChannelExec OutputStream 但这只会导致程序什么也不做，所以我怀疑这不是正确的方法。

例如，在打印第一个 ls 输出后，我应该添加什么来打印命令 cd Downloads 和 ls 之后的内容？

Answer 1

用“;”分隔你的命令例如:

String command1="cd mydeploy/tools/Deploy/scripts/; ls -ltr;./conn_testing.ksh";