OSHI.是一个基于JNA的免费的本地操作系统和Java的硬件信息库。它不需要安装任何额外的本机库，旨在提供跨平台的实现来检索系统信息，如操作系统版本、进程、内存和CPU使用情况、磁盘和分区、设备、传感器等。（OSHI is a free JNA-based (native) Operating System and Hardware Information library for Java. It does not require the installation of any additional native libraries and aims to provide a cross-platform implementation to retrieve system information, such as OS version, processes, memory & CPU usage, disks & partitions, devices, sensors, etc.）
项目地址：https://github.com/oshi/oshi
支持以下内容：
Computer System and firmware, baseboard
Operating System and Version/Build
Physical (core) and Logical (hyperthreaded) CPUs, processor groups, NUMA nodes
System and per-processor load, usage tick counters, interrupts, uptime
Process uptime, CPU, memory usage, user/group, command line args, thread details
Physical and virtual memory used/available
Mounted filesystems (type, usable and total space, options, reads and writes)
Disk drives (model, serial, size, reads and writes) and partitions
Network interfaces (IPs, bandwidth in/out), network parameters, TCP/UDP statistics
Battery state (% capacity, time remaining, power usage stats)
USB Devices
Connected displays (with EDID info), graphics and audio cards
Sensors (temperature, fan speeds, voltage) on some hardware
Maven引用：
<dependency>
<groupId>com.github.oshi</groupId>
<artifactId>oshi-core</artifactId>
<version>3.9.1</version>
</dependency>
示例代码：
package com.mt.test.oshi;
import oshi.SystemInfo;
import oshi.hardware.CentralProcessor;
import oshi.hardware.GlobalMemory;
import java.text.DecimalFormat;
import java.util.Properties;
import java.util.concurrent.TimeUnit;
/**
* @author colin.cheng
* @version V1.0
* @date Created In 16:04 2019/8/16
*/
public class OshiTest {
public static void main(String[] args) {
while (true) {
try {
OshiTest.printlnCpuInfo();
OshiTest.MemInfo();
OshiTest.getThread();
OshiTest.setSysInfo();
OshiTest.setJvmInfo();
TimeUnit.SECONDS.sleep(5);
} catch (Exception e) {
e.printStackTrace();
}
}
}
private static void printlnCpuInfo() throws InterruptedException {
// System.out.println("----------------cpu信息----------------");
SystemInfo systemInfo = new SystemInfo();
CentralProcessor processor = systemInfo.getHardware().getProcessor();
long[] prevTicks = processor.getSystemCpuLoadTicks();
// 睡眠1s
TimeUnit.SECONDS.sleep(1);
long[] ticks = processor.getSystemCpuLoadTicks();
long nice = ticks[CentralProcessor.TickType.NICE.getIndex()]
- prevTicks[CentralProcessor.TickType.NICE.getIndex()];
long irq = ticks[CentralProcessor.TickType.IRQ.getIndex()]
- prevTicks[CentralProcessor.TickType.IRQ.getIndex()];
long softirq = ticks[CentralProcessor.TickType.SOFTIRQ.getIndex()]
- prevTicks[CentralProcessor.TickType.SOFTIRQ.getIndex()];
long steal = ticks[CentralProcessor.TickType.STEAL.getIndex()]
- prevTicks[CentralProcessor.TickType.STEAL.getIndex()];
long cSys = ticks[CentralProcessor.TickType.SYSTEM.getIndex()]
- prevTicks[CentralProcessor.TickType.SYSTEM.getIndex()];
long user = ticks[CentralProcessor.TickType.USER.getIndex()]
- prevTicks[CentralProcessor.TickType.USER.getIndex()];
long iowait = ticks[CentralProcessor.TickType.IOWAIT.getIndex()]
- prevTicks[CentralProcessor.TickType.IOWAIT.getIndex()];
long idle = ticks[CentralProcessor.TickType.IDLE.getIndex()]
- prevTicks[CentralProcessor.TickType.IDLE.getIndex()];
long totalCpu = user + nice + cSys + idle + iowait + irq + softirq + steal;
System.out.println("----------------cpu信息----------------");
System.out.println("cpu核数:" + processor.getLogicalProcessorCount());
System.out.println("cpu系统使用率:" + new DecimalFormat("#.##%").format(cSys * 1.0 / totalCpu));
System.out.println("cpu用户使用率:" + new DecimalFormat("#.##%").format(user * 1.0 / totalCpu));
System.out.println("cpu当前等待率:" + new DecimalFormat("#.##%").format(iowait * 1.0 / totalCpu));
System.out.println("cpu当前使用率:" + new DecimalFormat("#.##%").format(1.0 - (idle * 1.0 / totalCpu)));
}
public static void MemInfo() {
System.out.println("----------------主机内存信息----------------");
SystemInfo systemInfo = new SystemInfo();
GlobalMemory memory = systemInfo.getHardware().getMemory();
// 总内存
long totalByte = memory.getTotal();
// 剩余
long acaliableByte = memory.getAvailable();
System.out.println("总内存 = " + formatByte(totalByte));
System.out.println("使用" + formatByte(totalByte - acaliableByte));
System.out.println("剩余内存 = " + formatByte(acaliableByte));
System.out.println("使用率：" + new DecimalFormat("#.##%").format((totalByte - acaliableByte) * 1.0 / totalByte));
}
public static void setSysInfo() {
System.out.println("----------------操作系统信息----------------");
Properties props = System.getProperties();
// 系统名称
String osName = props.getProperty("os.name");
// 架构名称
String osArch = props.getProperty("os.arch");
System.out.println("操作系统名 = " + osName);
System.out.println("系统架构 = " + osArch);
}
public static void setJvmInfo() {
System.out.println("----------------jvm信息----------------");
Properties props = System.getProperties();
Runtime runtime = Runtime.getRuntime();
// jvm总内存
long jvmTotalMemoryByte = runtime.totalMemory();
// jvm最大可申请
long jvmMaxMoryByte = runtime.maxMemory();
// 空闲空间
long freeMemoryByte = runtime.freeMemory();
// jdk版本
String jdkVersion = props.getProperty("java.version");
// jdk路径
String jdkHome = props.getProperty("java.home");
System.out.println("jvm内存总量 = " + formatByte(jvmTotalMemoryByte));
System.out.println("jvm已使用内存 = " + formatByte(jvmTotalMemoryByte - freeMemoryByte));
System.out.println("jvm剩余内存 = " + formatByte(freeMemoryByte));
System.out.println("jvm内存使用率 = "
+ new DecimalFormat("#.##%").format((jvmTotalMemoryByte - freeMemoryByte) * 1.0 / jvmTotalMemoryByte));
System.out.println("java版本 = " + jdkVersion);
// System.out.println("jdkHome = " + jdkHome);
}
public static void getThread() {
System.out.println("----------------线程信息----------------");
ThreadGroup currentGroup = Thread.currentThread().getThreadGroup();
while (currentGroup.getParent() != null) {
// 返回此线程组的父线程组
currentGroup = currentGroup.getParent();
}
// 此线程组中活动线程的估计数
int noThreads = currentGroup.activeCount();
Thread[] lstThreads = new Thread[noThreads];
// 把对此线程组中的所有活动子组的引用复制到指定数组中。
currentGroup.enumerate(lstThreads);
for (Thread thread : lstThreads) {
System.out.println("线程数量：" + noThreads + " 线程id：" + thread.getId() + " 线程名称：" + thread.getName() + " 线程状态："
+ thread.getState());
}
}
public static String formatByte(long byteNumber) {
// 换算单位
double FORMAT = 1024.0;
double kbNumber = byteNumber / FORMAT;
if (kbNumber < FORMAT) {
return new DecimalFormat("#.##KB").format(kbNumber);
}
double mbNumber = kbNumber / FORMAT;
if (mbNumber < FORMAT) {
return new DecimalFormat("#.##MB").format(mbNumber);
}
double gbNumber = mbNumber / FORMAT;
if (gbNumber < FORMAT) {
return new DecimalFormat("#.##GB").format(gbNumber);
}
double tbNumber = gbNumber / FORMAT;
return new DecimalFormat("#.##TB").format(tbNumber);
}
}
输出信息：
11:25:56.946 [main] DEBUG oshi.hardware.common.AbstractCentralProcessor - Oracle MXBean detected.
11:25:57.075 [main] DEBUG oshi.hardware.platform.windows.WindowsCentralProcessor - Initialized Processor
----------------cpu信息----------------
cpu核数:4
cpu系统使用率:3.45%
cpu用户使用率:3.85%
cpu当前等待率:0%
cpu当前使用率:7.3%
----------------主机内存信息----------------
总内存 = 7.92GB
使用5.51GB
剩余内存 = 2.41GB
使用率：69.54%
----------------线程信息----------------
线程数量：5 线程id：2 线程名称：Reference Handler 线程状态：WAITING
线程数量：5 线程id：3 线程名称：Finalizer 线程状态：WAITING
线程数量：5 线程id：4 线程名称：Signal Dispatcher 线程状态：RUNNABLE
线程数量：5 线程id：5 线程名称：Attach Listener 线程状态：RUNNABLE
线程数量：5 线程id：1 线程名称：main 线程状态：RUNNABLE
----------------操作系统信息----------------
操作系统名 = Windows 7
系统架构 = amd64
----------------jvm信息----------------
jvm内存总量 = 123MB
jvm已使用内存 = 20.37MB
jvm剩余内存 = 102.63MB
jvm内存使用率 = 16.56%
java版本 = 1.8.0_51
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