org.apache.sshd的SshClient客户端 连接服务器执行命令 示例

引入依赖

		<dependency>
            <groupId>org.apache.sshdgroupId>
            <artifactId>sshd-coreartifactId>
            <version>2.9.1version>
        dependency>
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示例代码，可以直接执行，也可以做替换命令、维护session等修改

package com.demo.demo;

import lombok.extern.slf4j.Slf4j;
import org.apache.sshd.client.SshClient;
import org.apache.sshd.client.channel.ChannelExec;
import org.apache.sshd.client.channel.ClientChannelEvent;
import org.apache.sshd.client.future.AuthFuture;
import org.apache.sshd.client.future.ConnectFuture;
import org.apache.sshd.client.session.ClientSession;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.EnumSet;
import java.util.concurrent.TimeUnit;

@Slf4j
public class SshdUtil {

    public static final String WHO_AM_I = "whoami";

    public static void main(String[] args) {
        execute("**.**.**.**",
                22,
                "root",
                "*****");
    }

    private static void execute(String host, int port, String username, String password) {
        SshClient client = SshClient.setUpDefaultClient();
        ClientSession session = null;
        try {
            client.start();
            ConnectFuture connectFuture = client.connect(username, host, port).verify(10, TimeUnit.SECONDS);
            if (connectFuture.isConnected()) {
                session = connectFuture.getSession();
                session.addPasswordIdentity(password);
                AuthFuture auth = session.auth().verify(10, TimeUnit.SECONDS);
                if (auth.isSuccess()) {
                    channelCmd(session, WHO_AM_I);
                }
            }
        } catch (IOException e) {
            log.error("执行异常", e);
        } finally {
            try {
                if (session != null) {
                    session.close();
                }
                client.close();
            } catch (IOException e) {
                log.error("关闭异常", e);
            }
        }
    }

    private static void channelCmd(ClientSession session, String cmd) throws IOException {
        ChannelExec channel = session.createExecChannel(cmd);
        ByteArrayOutputStream output = new ByteArrayOutputStream();
        ByteArrayOutputStream outputErr = new ByteArrayOutputStream();
        channel.setOut(output);
        channel.setErr(outputErr);
        channel.open();
        channel.waitFor(EnumSet.of(ClientChannelEvent.CLOSED), 0);
        log.info("Output：{}", output.toString().replace("\n", "\\n"));
        log.info("Error：{}", outputErr.toString().replace("\n", "\\n"));
    }
}

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输出如下，分别代表了输出流stdout和错误输出流stderr

*** [main] SshdUtil INFO  -Output：root\n
*** [main] SshdUtil INFO  -Error：
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