使用sigar获取本机 服务器、系统、CPU、JVM、内存信息

        <dependency>
            <groupId>org.fusesource</groupId>
            <artifactId>sigar</artifactId>
            <version>1.6.4</version>
        </dependency>

package space.land.util;

import lombok.SneakyThrows;
import org.hyperic.sigar.*;
import org.springframework.stereotype.Component;
import space.land.model.vo.server.ServerInfos;

import java.net.InetAddress;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Properties;

/**
 * Title: 获取本机 服务器、系统、CPU、JVM、内存信息。
 *
 * @author Fking<fsyvip66 @ gmail.com>
 * @version 1.0.0
 * @since 2022/1/5 18:53
 */
@Component
public class ServerUtil {

    @SneakyThrows
    public static ServerInfos getServerInfo() {
        //服务器信息
        Properties properties = System.getProperties();
        Map<String, String> getenv = System.getenv();
        InetAddress localHost = InetAddress.getLocalHost();
        ServerInfos.ServerInfo serverInfo = ServerInfos.ServerInfo.builder().userName(getenv.get("USERNAME")).computerName(getenv.get("COMPUTERNAME")).computerDomain(getenv.get("USERDOMAIN")).serverIp(localHost.getHostAddress()).hostName(localHost.getHostName()).userHome(properties.getProperty("user.home")).userDir(properties.getProperty("user.dir")).build();
        //系统信息
        OperatingSystem instance = OperatingSystem.getInstance();
        ServerInfos.SystemInfo systemInfo = ServerInfos.SystemInfo.builder().vendorName(instance.getVendorName()).arch(instance.getArch()).description(instance.getDescription()).version(instance.getVersion()).build();
        //CPU信息
        Sigar sigar = new Sigar();
        List<ServerInfos.CpuInfo> cpuInfoList = new ArrayList<>();
        CpuInfo[] infoList = sigar.getCpuInfoList();
        CpuPerc[] cpuList = sigar.getCpuPercList();
        for (int i = 0; i < infoList.length; i++) {
            CpuInfo cpuInfo = infoList[i];
            CpuPerc cpu = cpuList[i];
            cpuInfoList.add(ServerInfos.CpuInfo.builder().mhz(cpuInfo.getMhz()).vendor(cpuInfo.getVendor()).cacheSize(cpuInfo.getCacheSize()).freqUser(cpu.getUser()).freqSys(cpu.getSys()).freqWait(cpu.getWait()).freqNice(cpu.getNice()).freqIdle(cpu.getIdle()).freqCombined(cpu.getCombined()).build());
        }
        //JVM信息
        Runtime runtime = Runtime.getRuntime();
        ServerInfos.JvmInfo jvmInfo = ServerInfos.JvmInfo.builder().totalMemory(runtime.totalMemory()).freeMemory(runtime.freeMemory()).availableProcessors(runtime.availableProcessors()).version(properties.getProperty("version")).vendor(properties.getProperty("java.vendor")).home(properties.getProperty("java.home")).specificationVersion(properties.getProperty("java.specification.version")).classPath(properties.getProperty("java.class.path")).libraryPath(properties.getProperty("java.library.path")).tmpdir(properties.getProperty("java.io.tmpdir")).dirs(properties.getProperty("java.ext.dirs")).build();
        //内存信息
        Mem mem = sigar.getMem();
        Swap swap = sigar.getSwap();
        ServerInfos.MemoryInfo memoryInfo = ServerInfos.MemoryInfo.builder().memoryTotal(mem.getTotal() / (1024 * 1024L)).memoryUsed(mem.getUsed() / (1024 * 1024L)).memoryFree(mem.getFree() / (1024 * 1024L)).swapTotal(swap.getTotal() / (1024 * 1024L)).swapUsed(swap.getUsed() / (1024 * 1024L)).swapFree(swap.getFree() / (1024 * 1024L)).build();
        return ServerInfos.builder().serverInfo(serverInfo).systemInfo(systemInfo).cpuInfo(cpuInfoList).jvmInfo(jvmInfo).memoryInfo(memoryInfo).build();
    }
}
~~~

~~~java
package space.land.model.vo.server;

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.experimental.Accessors;

import java.util.List;

/**
 * Title: 服务器、系统、CPU、JVM、内存信息。
 *
 * @author Fking<fsyvip66 @ gmail.com>
 * @version 1.0.0
 * @since 2022/1/7 14:53
 */

@NoArgsConstructor
@AllArgsConstructor
@Data
@Builder
@Accessors(chain = true)
public class ServerInfos {

    private ServerInfo serverInfo;

    private SystemInfo systemInfo;

    private List<CpuInfo> cpuInfo;

    private JvmInfo jvmInfo;

    private MemoryInfo memoryInfo;

    /**
     * Title:  服务器信息
     *
     * @author Fking<fsyvip666 @ gmail.com>
     * @since 2022/1/7
     */
    @NoArgsConstructor
    @AllArgsConstructor
    @Data
    @Builder
    @Accessors(chain = true)
    public static class ServerInfo {
        //用户名
        private String userName;
        //计算机名
        private String computerName;
        //计算机域名
        private String computerDomain;
        //本机ip
        private String serverIp;
        //本机主机名
        private String hostName;
        //用户的主目录
        private String userHome;
        //用户的当前工作目录
        private String userDir;
    }

    /**
     * Title:  系统信息
     *
     * @author Fking<fsyvip666 @ gmail.com>
     * @since 2022/1/7
     */
    @NoArgsConstructor
    @AllArgsConstructor
    @Data
    @Builder
    @Accessors(chain = true)
    public static class SystemInfo {
        //操作系统名称
        private String vendorName;
        //内核构架
        private String arch;
        //操作系统的描述
        private String description;
        //操作系统的版本号
        private String version;
    }

    /**
     * Title:  CPU信息
     *
     * @author Fking<fsyvip666 @ gmail.com>
     * @since 2022/1/7
     */
    @NoArgsConstructor
    @AllArgsConstructor
    @Data
    @Builder
    @Accessors(chain = true)
    public static class CpuInfo {
        //CPU的总量MHz
        private int mhz;
        //CPU的厂商
        private String vendor;
        //CPU型号类别
        private String model;
        //缓冲缓存数量
        private long cacheSize;
        //CPU的用户使用率
        private double freqUser;
        //CPU的系统使用率
        private double freqSys;
        //CPU的当前等待率
        private double freqWait;
        //CPU的当前错误率
        private double freqNice;
        //CPU的当前空闲率
        private double freqIdle;
        //CPU总的使用率
        private double freqCombined;
    }

    /**
     * Title:  JVM信息
     *
     * @author Fking<fsyvip666 @ gmail.com>
     * @since 2022/1/7
     */
    @NoArgsConstructor
    @AllArgsConstructor
    @Data
    @Builder
    @Accessors(chain = true)
    public static class JvmInfo {
        //JVM可以使用的总内存
        private long totalMemory;
        //JVM可以使用的剩余内存
        private long freeMemory;
        //JVM可以使用的处理器个数
        private int availableProcessors;
        //Java的运行环境版本
        private String version;
        //Java的运行环境供应商
        private String vendor;
        //Java的安装路径
        private String home;
        //Java运行时环境规范版本
        private String specificationVersion;
        //Java的类路径
        private String classPath;
        //Java加载库时搜索的路径列表
        private String libraryPath;
        //默认的临时文件路径
        private String tmpdir;
        //扩展目录的路径
        private String dirs;
    }

    /**
     * Title:  内存信息
     *
     * @author Fking<fsyvip666 @ gmail.com>
     * @since 2022/1/7
     */
    @NoArgsConstructor
    @AllArgsConstructor
    @Data
    @Builder
    @Accessors(chain = true)
    public static class MemoryInfo {
        //内存总量
        private long memoryTotal;
        //当前内存使用量
        private long memoryUsed;
        //当前内存剩余量
        private long memoryFree;
        //交换区总量
        private long swapTotal;
        //当前交换区使用量
        private long swapUsed;
        //当前交换区剩余量
        private long swapFree;
    }
}