Java获取多台服务器CPU、内存和硬盘信息实现方式

<!--JSch 依赖库-->
<dependency>
    <groupId>com.jcraft</groupId>
    <artifactId>jsch</artifactId>
    <version>0.1.55</version>
</dependency>

package xxx.xxx.xxx.utils;
import com.jcraft.jsch.*;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
/**
 * @ClassName: ServerInfoUtil
 * @Description: 服务器信息工具类
 * @author: boxukai
 * @date:2025年04月15日 14:27:08
 */
public class ServerInfoUtil {
    // 服务器列表，包含 IP、用户名和密码
    private static List<Server> servers = new ArrayList<>();
    static {
        // 假设 2 台服务器的信息
        servers.add(new Server("你的服务ip1", "你的服务账号", "你的服务密码"));
        servers.add(new Server("你的服务ip2", "你的服务账号", "你的服务密码"));
        // 依次添加其他服务器的信息
    }
    // 内部类表示服务器信息
    static class Server {
        String ip;
        String username;
        String password;
        public Server(String ip, String username, String password) {
            this.ip = ip;
            this.username = username;
            this.password = password;
        }
    }
    // 执行 SSH 命令并获取输出
    private static String executeCommand(String ip, String username, String password, String command) {
        StringBuilder output = new StringBuilder();
        JSch jsch = new JSch();
        Session session = null;
        try {
            session = jsch.getSession(username, ip, 22);
            session.setPassword(password);
            java.util.Properties config = new java.util.Properties();
            config.put("StrictHostKeyChecking", "no");
            session.setConfig(config);
            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();
            BufferedReader reader = new BufferedReader(new InputStreamReader(in));
            String line;
            while ((line = reader.readLine()) != null) {
                output.append(line).append("\n");
            }
            channel.disconnect();
            session.disconnect();
        } catch (JSchException | IOException e) {
            e.printStackTrace();
        }
        return output.toString();
    }
    // 获取内存信息
    private static void getMemoryInfo() {
        for (Server server : servers) {
            String command = "free -h";
            String result = executeCommand(server.ip, server.username, server.password, command);
            System.out.println("Server: " + server.ip + "\nMemory Info:\n" + result);
        }
    }
    // 获取 CPU 信息
    private static void getCPUInfo() {
        for (Server server : servers) {
            String command = "lscpu";
            String result = executeCommand(server.ip, server.username, server.password, command);
            System.out.println("Server: " + server.ip + "\nCPU Info:\n" + result);
        }
    }
    // 获取磁盘信息
    private static void getDiskInfo() {
        for (Server server : servers) {
            String command = "df -h";
            String result = executeCommand(server.ip, server.username, server.password, command);
            System.out.println("Server: " + server.ip + "\nDisk Info:\n" + result);
        }
    }
    public static void main(String[] args) {
        getMemoryInfo();
        getCPUInfo();
        getDiskInfo();
    }
}