重点---自测可以---java jsch 密钥登陆,密钥对登录与JSch EC2实例

依赖：

<!-- https://mvnrepository.com/artifact/com.jcraft/jsch -->
<dependency>
    <groupId>com.jcraft</groupId>
    <artifactId>jsch</artifactId>
    <version>0.1.55</version>
</dependency>

代码：
import com.jcraft.jsch.*;

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

public class Test {
    public static void main(String[] args) throws JSchException, InterruptedException, IOException {
        JSch jsch = new JSch();
        jsch.addIdentity("D:\\文档\\aliecs.pem");
        jsch.setConfig("StrictHostKeyChecking", "no");
        Session session = jsch.getSession("root", "8.xx.xx.24", 2022);
        session.connect();
        String command = "ls";
        ChannelExec channel = (ChannelExec) session.openChannel("exec");
        channel.setCommand(command);
        channel.setErrStream(System.err);
        channel.connect();

        InputStream input = channel.getInputStream();
        byte[] tmp = new byte[1024];
        while (true) {
            while (input.available() > 0) {
                int i = input.read(tmp, 0, 1024);
                if (i < 0) break;
                System.out.println(new String(tmp, 0, i));
            }
            if (channel.isClosed()) {
                System.out.println("exit-status: " + channel.getExitStatus());
                break;
            }
            Thread.sleep(1000);
        }
        channel.disconnect();
        session.disconnect();
    }
}