Java 使用 oshi 获取当前服务硬件信息（操作系统、CPU、内存、磁盘）
一、导包
这里需要引入两个依赖包：
<dependency>
<groupId>com.github.oshigroupId>
<artifactId>oshi-coreartifactId>
<version>6.3.0version>
dependency>
<dependency>
<groupId>org.projectlombokgroupId>
<artifactId>lombokartifactId>
<version>1.18.24version>
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/，官方文档地址：http://doc.ruoyi.vip/