java控制ssh执行命令

在Java中可以使用 `JSch` 库来控制SSH执行命令。下面是一个简单的示例代码：

import com.jcraft.jsch.*;

public class SSHCommandExecutor {
    public static void main(String[] args) {
        String host = "example.com";
        String user = "username";
        String password = "password";
        String command = "ls -la";

        try {
            JSch jsch = new JSch();
            Session session = jsch.getSession(user, host, 22);
            session.setPassword(password);
            session.setConfig("StrictHostKeyChecking", "no");
            session.connect();

            Channel channel = session.openChannel("exec");
            ((ChannelExec) channel).setCommand(command);
            channel.setInputStream(null);
            ((ChannelExec) channel).setErrStream(System.err);

            InputStream in = channel.getInputStream();
            channel.connect();

            byte[] tmp = new byte[1024];
            while (true) {
                while (in.available() > 0) {
                    int i = in.read(tmp, 0, 1024);
                    if (i < 0)
                        break;
                    System.out.print(new String(tmp, 0, i));
                }
                if (channel.isClosed()) {
                    if (in.available() > 0)
                        continue;
                    System.out.println("exit-status: " + channel.getExitStatus());
                    break;
                }
                try {
                    Thread.sleep(1000);
                } catch (Exception ee) {
                }
            }
            channel.disconnect();
            session.disconnect();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

这个示例代码连接到SSH主机，执行 `ls -la` 命令，并将命令输出打印到控制台。你可以将 `command` 变量替换为你想要执行的任何命令。