SystemInfoUtils.java
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package com.genersoft.iot.vmp.utils;
import oshi.SystemInfo;
import oshi.hardware.CentralProcessor;
import oshi.hardware.GlobalMemory;
import oshi.hardware.HardwareAbstractionLayer;
import oshi.hardware.NetworkIF;
import oshi.software.os.OperatingSystem;
import oshi.util.FormatUtil;
import java.text.DecimalFormat;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;
/**
* 实现参考自xiaozhangnomoney原创文章，
* 版权声明：本文为xiaozhangnomoney原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明
* 原文出处链接：https://blog.csdn.net/xiaozhangnomoney/article/details/107769147
*/
public class SystemInfoUtils {
/**
* 获取cpu信息
* @return
* @throws InterruptedException
*/
public static double getCpuInfo() throws InterruptedException {
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;
return 1.0-(idle * 1.0 / totalCpu);
}
/**
* 获取内存使用率
* @return
*/
public static double getMemInfo(){
SystemInfo systemInfo = new SystemInfo();
GlobalMemory memory = systemInfo.getHardware().getMemory();
//总内存
long totalByte = memory.getTotal();
//剩余
long acaliableByte = memory.getAvailable();
return (totalByte-acaliableByte)*1.0/totalByte;
}
/**
* 获取网络上传和下载
* @return
*/
public static Map<String,String> getNetworkInterfaces() {
SystemInfo si = new SystemInfo();
HardwareAbstractionLayer hal = si.getHardware();
List<NetworkIF> networkIFs = hal.getNetworkIFs();
int i= networkIFs.size() -1;
NetworkIF net= networkIFs.get(i);
String in = FormatUtil.formatBytes(net.getBytesRecv());
String out = FormatUtil.formatBytes(net.getBytesSent());
HashMap<String, String> map = new HashMap<>();
map.put("in",in);
map.put("out",out);
return map;
}
/**
* 获取进程数
* @return
*/
public static int getProcessesCount(){
SystemInfo si = new SystemInfo();
OperatingSystem os = si.getOperatingSystem();
int processCount = os.getProcessCount();
return processCount;
}
}