(1). OpenSSH是什么?
OpenSSH是SSH(Secure SHell)协议的免费开源实现.
说明白一点就是:我们平时用SSH登录Linux时,所使用的一套开源协议.
它能做什么?
比如:堡垒机/远程SH调用…(2). 引入依赖
<dependency>
<groupId>org.apache.sshd</groupId>
<artifactId>sshd-core</artifactId>
<version>1.2.0</version>
</dependency>
(3). 入门案例
import java.util.EnumSet;
import org.apache.sshd.client.SshClient;
import org.apache.sshd.client.channel.ClientChannel;
import org.apache.sshd.client.channel.ClientChannelEvent;
import org.apache.sshd.client.session.ClientSession;
import org.apache.sshd.common.util.io.NoCloseInputStream;
import org.apache.sshd.common.util.io.NoCloseOutputStream;
public class Test {
public static void main(String[] args) throws Exception {
try (SshClient client = SshClient.setUpDefaultClient()) {
client.start();
try (ClientSession session = client.connect("lixin", "127.0.0.1", 22).verify(5000).getSession()) {
// 密码模式
session.addPasswordIdentity("xxxxxx");
// 密钥模式
// String resourceKey = "/Users/lixin/.ssh/id_rsa";
// FileInputStream is = new FileInputStream(resourceKey);
// KeyPair keyPair = SecurityUtils.loadKeyPairIdentity(resourceKey, is, null);
// session.addPublicKeyIdentity(keyPair);
session.auth().verify(10000);
try (ClientChannel channel = session.createChannel(ClientChannel.CHANNEL_SHELL)) {
channel.setIn(new NoCloseInputStream(System.in));
channel.setOut(new NoCloseOutputStream(System.out));
channel.setErr(new NoCloseOutputStream(System.err));
channel.open();
channel.waitFor(EnumSet.of(ClientChannelEvent.CLOSED), 0);
} finally {
session.close(false);
}
} finally {
client.stop();
}
}
}
}
(4). 总结
SSHD支持密码和密钥模式,同时:基于SSHD,阿里开源了一套:termd-core工具.