🍏使用Java访问Linux服务器，并执行命令

一、引入依赖

<!--Java连接Linux服务器依赖-->
<dependency>
    <groupId>com.jcraft</groupId>
    <artifactId>jsch</artifactId>
    <version>0.1.55</version>
</dependency>

二、使用

package com.zhixi;
 
import com.jcraft.jsch.Channel;
import com.jcraft.jsch.ChannelExec;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.Session;
 
import java.io.InputStream;
 
public class SSHExample {
    public static void main(String[] args) {
        String host = "xxx"; // 远程服务器IP地址
        String user = "root"; // 远程服务器用户名
        String password = "xxx"; // 远程服务器密码
        // 要执行的命令
        StringBuilder command = new StringBuilder("pwd;");
        command.append("ls -la;");
 
        try {
            JSch jsch = new JSch();
            Session session = jsch.getSession(user, host, 22); // 创建一个SSH会话
            session.setPassword(password); // 设置会话密码
            session.setConfig("StrictHostKeyChecking", "no"); // 设置会话配置
            session.connect(); // 连接会话
 
            Channel channel = session.openChannel("exec"); // 打开一个exec通道
            ((ChannelExec) channel).setCommand(command.toString()); // 设置要执行的命令
            channel.setInputStream(null);
            ((ChannelExec) channel).setErrStream(System.err); // 设置错误输出流
 
            InputStream inputStream = channel.getInputStream();
            channel.connect(); // 连接通道
 
            byte[] buffer = new byte[1024];
            while (true) {
                while (inputStream.available() > 0) {
                    int i = inputStream.read(buffer, 0, 1024);
                    if (i < 0) break;
                    System.out.print(new String(buffer, 0, i)); // 输出结果到控制台
                }
                if (channel.isClosed()) {
                    if (inputStream.available() > 0) continue;
                    System.out.println("exit-status: " + channel.getExitStatus()); // 输出退出状态
                    break;
                }
                try {
                    Thread.sleep(1000);
                } catch (Exception ee) {
                } // 等待一秒钟
            }
            channel.disconnect(); // 断开通道
            session.disconnect(); // 断开会话
        } catch (Exception e) {
            e.printStackTrace(); // 输出错误信息
        }
    }
}