Java 使用 oshi 获取当前服务硬件信息（操作系统、CPU、内存、磁盘）

红太狼 2024-03-16 23:01 61阅读 0赞

## 一、导包 ##

这里需要引入两个依赖包：

<dependency>
    	<groupId>com.github.oshi</groupId>
    	<artifactId>oshi-core</artifactId>
    	<version>6.3.0</version>
    </dependency>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>1.18.24</version>
    </dependency>

## 二、工具类 ##

HardWareUtil：

import oshi.SystemInfo;
    import oshi.hardware.CentralProcessor;
    import oshi.hardware.GlobalMemory;
    import oshi.software.os.FileSystem;
    import oshi.software.os.OSFileStore;
    import oshi.software.os.OperatingSystem;
    import oshi.util.Util;
    import src.com.dxc.enumerate.SizeEnum;
    import src.com.dxc.model.*;
    import oshi.hardware.CentralProcessor.TickType;
    
    import java.math.BigDecimal;
    import java.math.RoundingMode;
    import java.util.ArrayList;
    import java.util.List;
    import java.util.Objects;
    import java.util.Properties;
    
    /**
     * 硬件信息工具类
     *
     * @Author xincheng.du
     * @Date 2023/7/6 17:17
     */
    public class HardWareUtil {
        
    
        private HardWareUtil() {
        }
    
        /**
         * 等待休眠时间，单位ms
         */
        private static final int WAIT_TIME_MS = 1000;
    
        /**
         * 获取cpu信息
         *
         * @return  cpu信息
         */
        public static CpuInfo getCpuInfo() {
        
            oshi.SystemInfo si = new oshi.SystemInfo();
            CentralProcessor processor = si.getHardware().getProcessor();
            // CPU信息
            long[] prevTicks = processor.getSystemCpuLoadTicks();
            Util.sleep(WAIT_TIME_MS);
            long[] ticks = processor.getSystemCpuLoadTicks();
            long nice = ticks[TickType.NICE.getIndex()] - prevTicks[TickType.NICE.getIndex()];
            long irq = ticks[TickType.IRQ.getIndex()] - prevTicks[TickType.IRQ.getIndex()];
            long softIrq = ticks[TickType.SOFTIRQ.getIndex()] - prevTicks[TickType.SOFTIRQ.getIndex()];
            long steal = ticks[TickType.STEAL.getIndex()] - prevTicks[TickType.STEAL.getIndex()];
            long cSys = ticks[TickType.SYSTEM.getIndex()] - prevTicks[TickType.SYSTEM.getIndex()];
            long user = ticks[TickType.USER.getIndex()] - prevTicks[TickType.USER.getIndex()];
            long ioWait = ticks[TickType.IOWAIT.getIndex()] - prevTicks[TickType.IOWAIT.getIndex()];
            long idle = ticks[TickType.IDLE.getIndex()] - prevTicks[TickType.IDLE.getIndex()];
            long totalCpu = user + nice + cSys + idle + ioWait + irq + softIrq + steal;
            CpuInfo cpuInfo = new CpuInfo();
            cpuInfo.setCpuNum(processor.getLogicalProcessorCount());
            cpuInfo.setTotal(totalCpu);
            cpuInfo.setSys(cSys);
            cpuInfo.setUsed(user);
            cpuInfo.setWait(ioWait);
            cpuInfo.setFree(idle);
            return cpuInfo;
        }
    
        /**
         * 获取内存信息
         *
         * @param size  大小单位，默认为B
         * @return      内存信息
         */
        public static MemoryInfo getMemoryInfo(SizeEnum size) {
        
            SystemInfo si = new SystemInfo();
            GlobalMemory memory = si.getHardware().getMemory();
            // 内存信息
            MemoryInfo mem = new MemoryInfo();
            mem.setTotal(Objects.isNull(size) ? memory.getTotal() : (float) memory.getTotal() / size.getSize());
            mem.setUsed(Objects.isNull(size) ? (memory.getTotal() - memory.getAvailable()) : (float) (memory.getTotal() - memory.getAvailable()) / size.getSize());
            mem.setFree(Objects.isNull(size) ? memory.getAvailable() : (float) memory.getAvailable() / size.getSize());
            return mem;
        }
    
        /**
         * 获取服务器信息
         *
         * @return  服务器信息
         */
        public static SystemDetails getSystemInfo() {
        
            // 服务器信息
            SystemDetails details = new SystemDetails();
            Properties props = System.getProperties();
            details.setComputerName(IpUtils.getHostName());
            details.setComputerIp(IpUtils.getHostIp());
            details.setOsName(props.getProperty("os.name"));
            details.setOsArch(props.getProperty("os.arch"));
            details.setUserDir(props.getProperty("user.dir"));
            return details;
        }
    
        /**
         * 获取Java虚拟机信息
         */
        public static JvmInfo getJvmInfo() {
        
            JvmInfo jvmInfo = new JvmInfo();
            Properties props = System.getProperties();
            jvmInfo.setTotal(Runtime.getRuntime().totalMemory());
            jvmInfo.setMax(Runtime.getRuntime().maxMemory());
            jvmInfo.setFree(Runtime.getRuntime().freeMemory());
            jvmInfo.setVersion(props.getProperty("java.version"));
            jvmInfo.setHome(props.getProperty("java.home"));
            return jvmInfo;
        }
    
        /**
         * 获取磁盘信息
         */
        public static List<SysFile> getSysFiles() {
        
            SystemInfo si = new SystemInfo();
            // 获取操作系统
            OperatingSystem operatingSystem = si.getOperatingSystem();
            // 获取操作系统的文件系统
            FileSystem fileSystem = operatingSystem.getFileSystem();
            // 获取文件存储信息
            List<OSFileStore> fsArray = fileSystem.getFileStores();
            List<SysFile> sysFiles = new ArrayList<>();
            for (OSFileStore fs : fsArray) {
        
                // 获取可用空间
                long free = fs.getUsableSpace();
                // 获取总空间
                long total = fs.getTotalSpace();
                long used = total - free;
                SysFile sysFile = new SysFile();
                sysFile.setDirName(fs.getMount());
                sysFile.setSysTypeName(fs.getType());
                sysFile.setTypeName(fs.getName());
                sysFile.setTotal(convertFileSize(total));
                sysFile.setFree(convertFileSize(free));
                sysFile.setUsed(convertFileSize(used));
                sysFile.setUsage(mul(div(used, total, 4), 100));
                sysFiles.add(sysFile);
            }
            return sysFiles;
        }
    
        /**
         * 字节转换
         *
         * @param size 字节大小
         * @return 转换后值
         */
        public static String convertFileSize(long size) {
        
            if (size >= SizeEnum.GB.getSize()) {
        
                return String.format("%.1f GB", (float) size / SizeEnum.GB.getSize());
            } else if (size >= SizeEnum.MB.getSize()) {
        
                float f = (float) size / SizeEnum.MB.getSize();
                return String.format(f > 100 ? "%.0f MB" : "%.1f MB", f);
            } else if (size >= SizeEnum.KB.getSize()) {
        
                float f = (float) size / SizeEnum.KB.getSize();
                return String.format(f > 100 ? "%.0f KB" : "%.1f KB", f);
            } else {
        
                return String.format("%d B", size);
            }
        }
    
        /**
         * 提供精确的乘法运算。
         * @param v1 被乘数
         * @param v2 乘数
         * @return 两个参数的积
         */
        public static double mul(double v1, double v2) {
        
            BigDecimal b1 = new BigDecimal(Double.toString(v1));
            BigDecimal b2 = new BigDecimal(Double.toString(v2));
            return b1.multiply(b2).doubleValue();
        }
    
        /**
         * 提供（相对）精确的除法运算。当发生除不尽的情况时，由scale参数指
         * 定精度，以后的数字四舍五入。
         * @param v1 被除数
         * @param v2 除数
         * @param scale 表示表示需要精确到小数点以后几位。
         * @return 两个参数的商
         */
        public static double div(double v1, double v2, int scale) {
        
            if (scale < 0) {
        
                throw new IllegalArgumentException("The scale must be a positive integer or zero");
            }
            BigDecimal b1 = new BigDecimal(Double.toString(v1));
            BigDecimal b2 = new BigDecimal(Double.toString(v2));
            if (b1.compareTo(BigDecimal.ZERO) == 0) {
        
                return BigDecimal.ZERO.doubleValue();
            }
            return b1.divide(b2, scale, RoundingMode.HALF_UP).doubleValue();
        }
    }

CpuInfo：

import lombok.Data;
    
    /**
     * CPU相关信息
     * 
     * @Author xincheng.du
     * @Date 2023/7/6 17:17
     */
    @Data
    public class CpuInfo {
        
        /**
         * 核心数
         */
        private int cpuNum;
    
        /**
         * CPU总的使用率
         */
        private double total;
    
        /**
         * CPU系统使用率
         */
        private double sys;
    
        /**
         * CPU用户使用率
         */
        private double used;
    
        /**
         * CPU当前等待率
         */
        private double wait;
    
        /**
         * CPU当前空闲率
         */
        private double free;
    
    }

JvmInfo：

import lombok.Data;
    
    /**
     * JVM相关信息
     * 
     * @Author xincheng.du
     * @Date 2023/7/6 17:17
     */
    @Data
    public class JvmInfo
    {
        
        /**
         * 当前JVM占用的内存总数(M)
         */
        private double total;
    
        /**
         * JVM最大可用内存总数(M)
         */
        private double max;
    
        /**
         * JVM空闲内存(M)
         */
        private double free;
    
        /**
         * JDK版本
         */
        private String version;
    
        /**
         * JDK路径
         */
        private String home;
        
    }

MemoryInfo：

import lombok.Data;
    
    /**
     * 內存相关信息
     * 
     * @Author xincheng.du
     * @Date 2023/7/6 17:17
     */
    @Data
    public class MemoryInfo {
        
        /**
         * 内存总量
         */
        private double total;
    
        /**
         * 已用内存
         */
        private double used;
    
        /**
         * 剩余内存
         */
        private double free;
    
    }

SysFile：

/**
     * 系统文件相关信息
     * 
     * @Author xincheng.du
     * @Date 2023/7/6 17:17
     */
    @Data
    public class SysFile
    {
        
        /**
         * 盘符路径
         */
        private String dirName;
    
        /**
         * 盘符类型
         */
        private String sysTypeName;
    
        /**
         * 文件类型
         */
        private String typeName;
    
        /**
         * 总大小
         */
        private String total;
    
        /**
         * 剩余大小
         */
        private String free;
    
        /**
         * 已经使用量
         */
        private String used;
    
        /**
         * 资源的使用率
         */
        private double usage;
    
    }

SystemDetails：

import lombok.Data;
    
    /**
     * 系统相关信息
     * 
     * @Author xincheng.du
     * @Date 2023/7/6 17:17
     */
    @Data
    public class SystemDetails {
        
        /**
         * 服务器名称
         */
        private String computerName;
    
        /**
         * 服务器Ip
         */
        private String computerIp;
    
        /**
         * 项目路径
         */
        private String userDir;
    
        /**
         * 操作系统
         */
        private String osName;
    
        /**
         * 系统架构
         */
        private String osArch;
        
    }

SizeEnum：

import lombok.AllArgsConstructor;
    import lombok.Getter;
    
    /**
     * 大小枚举
     *
     * @Author xincheng.du
     * @Date 2023/7/6 11:42
     */
    @AllArgsConstructor
    public enum SizeEnum {
        
    
        /**
         * 1KB = 1024B
         */
        KB(1024),
    
        /**
         * 1MB = 1024KB
         */
        MB(KB.size * 1024),
    
        /**
         * 1GB = 1024MB
         */
        GB(MB.size * 1024);
    
        /**
         * 1(K/M/G)B = ? B
         */
        @Getter
        private final long size;
    }

## 三、测试 ##

public static void main(String[] args) {
        
            CpuInfo cpuInfo = HardWareUtil.getCpuInfo();
            JvmInfo jvmInfo = HardWareUtil.getJvmInfo();
            SystemDetails systemInfo = HardWareUtil.getSystemInfo();
            MemoryInfo memoryInfo = HardWareUtil.getMemoryInfo(SizeEnum.GB);
            List<SysFile> sysFiles = HardWareUtil.getSysFiles();
            System.out.println(cpuInfo);
            System.out.println(jvmInfo);
            System.out.println(systemInfo);
            System.out.println(memoryInfo);
            System.out.println(sysFiles);
        }

控制台输出：

> CpuInfo(cpuNum=16, total=16501.0, sys=329.0, used=657.0, wait=0.0, free=15419.0)  
> JvmInfo(total=2.64241152E8, max=4.211081216E9, free=2.5297664E8, version=11.0.18, home=C:\\Program Files\\Java\\jdk-11)  
> SystemDetails(computerName=DESKTOP-HPOJ5DN, computerIp=192.168.110.202, userDir=E:\\JavaWorkspace\\oshi\_study, osName=Windows 10, osArch=amd64)  
> MemoryInfo(total=15.683177947998047, used=11.597965240478516, free=4.085212707519531)  
> \[SysFile(dirName=C:, sysTypeName=NTFS, typeName=本地固定磁盘 (C:), total=250.0 GB, free=159.6 GB, used=90.4 GB, usage=36.17), SysFile(dirName=D:, sysTypeName=NTFS, typeName=本地固定磁盘 (D:), total=224.7 GB, free=219.0 GB, used=5.8 GB, usage=2.56), SysFile(dirName=E:, sysTypeName=NTFS, typeName=本地固定磁盘 (E:), total=476.9 GB, free=435.4 GB, used=41.5 GB, usage=8.71)\]

注：本文部分代码参考自开源框架若依，官网地址：[http://www.ruoyi.vip/][http_www.ruoyi.vip]，官方文档地址：[http://doc.ruoyi.vip/][http_doc.ruoyi.vip]

[http_www.ruoyi.vip]: http://www.ruoyi.vip/
[http_doc.ruoyi.vip]: http://doc.ruoyi.vip/