目录

1.需要导入依赖包

 2.系统自带参数

3.获取当前服务器状态cpu、内存、存储等核心信息

 4.引入包后方法不存在

 5. 获取的cpu利用率和任务管理器cpu利用率值差距问题

1.需要导入依赖包

    com.GitHub.oshi    oshi-core    3.12.2        net.java.dev.jna    jna    5.2.0    net.java.dev.jna    jna-platfORM    5.2.0// 当期最新版本，最新版本与上面版本方法有所区别com.github.oshioshi-core6.3.2net.java.dev.jnajna5.12.1net.java.dev.jnajna-platform5.12.1

 2.系统自带参数

private static void systemParamsNameAndValue() {Properties properties = System.getProperties();Set> params = properties.entrySet();for (Iterator> iterator = params.iterator(); iterator.hasNext();) {Map.Entry systemParam = iterator.next();Object key = systemParam.geTKEy();Object value = systemParam.getValue();System.out.println("系统属性名: [" + key + "]  ---------系统属性名字对应值: " + value);}}

 RESULT:

系统属性名: [java.runtime.name]  ---------系统属性名字对应值: Java(TM) SE Runtime Environment系统属性名: [sun.boot.library.path]  ---------系统属性名字对应值: F:\jdk\jre\bin系统属性名: [java.vm.version]  ---------系统属性名字对应值: 25.291-b10系统属性名: [java.vm.vendor]  ---------系统属性名字对应值: oracle Corporation系统属性名: [java.vendor.url]  ---------系统属性名字对应值: Http://java.oracle.com/系统属性名: [path.separator]  ---------系统属性名字对应值: ;系统属性名: [java.vm.name]  ---------系统属性名字对应值: Java HotSpot(TM) 64-Bit Server VM系统属性名: [file.encoding.pkg]  ---------系统属性名字对应值: sun.io系统属性名: [user.country]  ---------系统属性名字对应值: CN系统属性名: [user.script]  ---------系统属性名字对应值: 系统属性名: [sun.java.launcher]  ---------系统属性名字对应值: SUN_STANDARD系统属性名: [sun.os.patch.level]  ---------系统属性名字对应值: 系统属性名: [java.vm.specification.name]  ---------系统属性名字对应值: Java Virtual Machine Specification系统属性名: [user.dir]  ---------系统属性名字对应值: F:\idea\workspace\系统属性名: [java.runtime.version]  ---------系统属性名字对应值: 1.8.0_291-b10系统属性名: [java.awt.graphicsenv]  ---------系统属性名字对应值: sun.awt.Win32GraphicsEnvironment系统属性名: [java.endorsed.dirs]  ---------系统属性名字对应值: 系统属性名: [os.arch]  ---------系统属性名字对应值: amd64系统属性名: [java.io.tmpdir]  ---------系统属性名字对应值: C:\Users\ADMINI~1\AppData\Local\Temp\系统属性名: [line.separator]  ---------系统属性名字对应值: 系统属性名: [java.vm.specification.vendor]  ---------系统属性名字对应值: Oracle Corporation系统属性名: [user.variant]  ---------系统属性名字对应值: 系统属性名: [os.name]  ---------系统属性名字对应值: windows 7系统属性名: [sun.jnu.encoding]  ---------系统属性名字对应值: GBK系统属性名: [java.library.path]  ---------系统属性名字对应值: 系统属性名: [java.specification.name]  ---------系统属性名字对应值: Java Platform api Specification系统属性名: [java.class.version]  ---------系统属性名字对应值: 5.0系统属性名: [sun.management.compiler]  ---------系统属性名字对应值: HotSpot 64-Bit Tiered Compilers系统属性名: [os.version]  ---------系统属性名字对应值: 10.0系统属性名: [user.home]  ---------系统属性名字对应值: C:\Users\Administrator系统属性名: [user.timezone]  ---------系统属性名字对应值: 系统属性名: [java.awt.printerjob]  ---------系统属性名字对应值: sun.awt.windows.WPrinterJob系统属性名: [file.encoding]  ---------系统属性名字对应值: UTF-8系统属性名: [java.specification.version]  ---------系统属性名字对应值: 1.8系统属性名: [java.class.path]  ---------系统属性名字对应值: 系统属性名: [user.name]  ---------系统属性名字对应值: Administrator系统属性名: [java.vm.specification.version]  ---------系统属性名字对应值: 1.8系统属性名: [sun.java.command]  ---------系统属性名字对应值: 系统属性名: [java.home]  ---------系统属性名字对应值: D:\jdk\jre系统属性名: [sun.arch.data.model]  ---------系统属性名字对应值: 64系统属性名: [user.language]  ---------系统属性名字对应值: zh系统属性名: [java.specification.vendor]  ---------系统属性名字对应值: Oracle Corporation系统属性名: [awt.toolkit]  ---------系统属性名字对应值: sun.awt.windows.WToolkit系统属性名: [java.vm.info]  ---------系统属性名字对应值: mixed mode系统属性名: [java.version]  ---------系统属性名字对应值: 1.8.0_291系统属性名: [java.ext.dirs]  ---------系统属性名字对应值: 系统属性名: [sun.boot.class.path]  ---------系统属性名字对应值: 系统属性名: [java.vendor]  ---------系统属性名字对应值: Oracle Corporation系统属性名: [file.separator]  ---------系统属性名字对应值: \系统属性名: [java.vendor.url.bug]  ---------系统属性名字对应值: http://bugreport.sun.com/bugreort/系统属性名: [sun.io.unicode.encoding]  ---------系统属性名字对应值: UnicodeLittle系统属性名: [sun.cpu.endian]  ---------系统属性名字对应值: little系统属性名: [sun.desktop]  ---------系统属性名字对应值: windows系统属性名: [sun.cpu.isalist]  ---------系统属性名字对应值: amd64

3.获取当前服务器状态cpu、内存、存储等核心信息

// 正确包import com.sun.management.OperatingSystemMXBean;/// 错误包//import java.lang.management.OperatingSystemMXBean;import oshi.SystemInfo;import oshi.hardware.CentralProcessor;import java.io.File;import java.lang.management.ManagementFactory;import java.lang.management.MemoryMXBean;import java.lang.management.MemoryUsage;import java.text.DecimalFormat;import java.text.SimpleDateFormat;import java.util.*;import java.util.concurrent.Executors;import java.util.concurrent.TimeUnit;

public static void initSystemInfo() {Executors.newSingleThreadScheduledExecutor().scheduleAtFixedRate(() -> {try {SystemInfo systemInfo = new SystemInfo();OperatingSystemMXBean osmxb = (OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean();MemoryMXBean memoryMXBean = ManagementFactory.getMemoryMXBean();// 椎内存使用情况MemoryUsage memoryUsage = memoryMXBean.getHeapMemoryUsage();// 初始的总内存long initTotalMemorySize = memoryUsage.getInit();// 最大可用内存long maxMemorySize = memoryUsage.getMax();// 已使用的内存long usedMemorySize = memoryUsage.getUsed();// 操作系统String osName = System.getProperty("os.name");// 总的物理内存String totalMemorySize = new DecimalFormat("#.##").format(osmxb.getTotalPhysicalMemorySize() / 1024.0 / 1024 / 1024) + "G";// 剩余的物理内存String freePhysicalMemorySize = new DecimalFormat("#.##").format(osmxb.getFreePhysicalMemorySize() / 1024.0 / 1024 / 1024) + "G";// 已使用的物理内存String usedMemory = new DecimalFormat("#.##").format((osmxb.getTotalPhysicalMemorySize() - osmxb.getFreePhysicalMemorySize()) / 1024.0 / 1024 / 1024) + "G";// 获得线程总数ThreadGroup parentThread;for (parentThread = Thread.currentThread().getThreadGroup(); parentThread.getParent() != null; parentThread = parentThread.getParent()) {}int totalThread = parentThread.activeCount();// 磁盘使用情况File[] files = File.listRoots();for (File file : files) {String total = new DecimalFormat("#.#").format(file.getTotalSpace() * 1.0 / 1024 / 1024 / 1024) + "G";String free = new DecimalFormat("#.#").format(file.getFreeSpace() * 1.0 / 1024 / 1024 / 1024) + "G";String un = new DecimalFormat("#.#").format(file.getUsableSpace() * 1.0 / 1024 / 1024 / 1024) + "G";String path = file.getPath();System.err.println(path + "总:" + total + ",可用空间:" + un + ",空闲空间:" + free);System.err.println("=============================================");}System.err.println("操作系统:" + osName);System.err.println("程序启动时间:" + new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date(ManagementFactory.getRuntimeMXBean().getStartTime())));/// System.err.println("pid:" + System.getProperty("PID"));System.err.println("pid:" + getPID());System.err.println("cpu核数:" + Runtime.getRuntime().availableProcessors());printlnCpuInfo(systemInfo);System.err.println("JAVA_HOME:" + System.getProperty("java.home"));System.err.println("JAVA_VERSION:" + System.getProperty("java.version"));System.err.println("USER_HOME:" + System.getProperty("user.home"));System.err.println("USER_NAME:" + System.getProperty("user.name"));System.err.println("初始的总内存(JVM):" + new DecimalFormat("#.#").format(initTotalMemorySize * 1.0 / 1024 / 1024) + "M");System.err.println("最大可用内存(JVM):" + new DecimalFormat("#.#").format(maxMemorySize * 1.0 / 1024 / 1024) + "M");System.err.println("已使用的内存(JVM):" + new DecimalFormat("#.#").format(usedMemorySize * 1.0 / 1024 / 1024) + "M");System.err.println("总的物理内存:" + totalMemorySize);System.err.println("总的物理内存:" + new DecimalFormat("#.##").format(systemInfo.getHardware().getMemory().getTotal() * 1.0 / 1024 / 1024 / 1024) + "M");System.err.println("剩余的物理内存:" + freePhysicalMemorySize);System.err.println("剩余的物理内存:" + new DecimalFormat("#.##").format(systemInfo.getHardware().getMemory().getAvailable() * 1.0 / 1024 / 1024 / 1024) + "M");System.err.println("已使用的物理内存:" + usedMemory);System.err.println("已使用的物理内存:" + new DecimalFormat("#.##").format((systemInfo.getHardware().getMemory().getTotal() - systemInfo.getHardware().getMemory().getAvailable()) * 1.0 / 1024 / 1024 / 1024) + "M");System.err.println("总线程数:" + totalThread);System.err.println("===========================");} catch (Exception e) {e.printStackTrace();}}, 0, 60, TimeUnit.SECONDS);}private static void printlnCpuInfo(SystemInfo systemInfo) throws InterruptedException {// todo 解决 Why does OSHI's System and Processor CPU usage differ from the Windows Task Manager?GlobalConfig.set(GlobalConfig.OSHI_OS_WINDOWS_CPU_UTILITY, true);CentralProcessor processor = systemInfo.getHardware().getProcessor();long[] prevTicks = processor.getSystemCpuLoadTicks();// 睡眠1sTimeUnit.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.err.println("cpu核数:" + processor.getLogicalProcessorCount());System.err.println("cpu系统使用率:" + new DecimalFormat("#.##%").format(cSys * 1.0 / totalCpu));System.err.println("cpu用户使用率:" + new DecimalFormat("#.##%").format(user * 1.0 / totalCpu));System.err.println("cpu当前等待率:" + new DecimalFormat("#.##%").format(iowait * 1.0 / totalCpu));System.err.println("cpu当前空闲率:" + new DecimalFormat("#.##%").format(idle * 1.0 / totalCpu));// todo cup利用//  user + system + nice + iowait + irq + softirq + steallong cpuUtilization = user + nice + cSys  + iowait + irq + softirq + steal;System.err.println("cpu利用率：" + new DecimalFormat("#.##%").format(cpuUtilization * 1.0 / totalCpu));// hutool工具，底层用的也是oshi/// 低版本这两个方法是无参方法,高版本中是需要有参数的//System.err.format("CPU load: %.1f%% (counting ticks)%n", processor.getSystemCpuLoadBetweenTicks(ticksArray) * 100);//System.err.format("CPU load: %.1f%% (OS MXBean)%n", processor.getSystemCpuLoad(1L) * 100);long[] ticksArray = {1,2,3,4,5,6,7,8};System.err.format("CPU load: %.1f%% (counting ticks)%n", processor.getSystemCpuLoadBetweenTicks(ticksArray) * 100);System.err.format("CPU load: %.1f%% (OS MXBean)%n", processor.getSystemCpuLoad(1L) * 100);ProcessorIdentifierInfo(processor);}public static String getPID() {String name = ManagementFactory.getRuntimeMXBean().getName();return name.split("@")[0];}public static void ProcessorIdentifierInfo(CentralProcessor processor) {CentralProcessor.ProcessorIdentifier processorIdentifier = processor.getProcessorIdentifier();String vendor = processorIdentifier.getVendor();String name = processorIdentifier.getName();String family = processorIdentifier.getFamily();String model = processorIdentifier.getModel();String stepping = processorIdentifier.getStepping();String processorID = processorIdentifier.getProcessorID();// cpu64bit ? "Intel64" : "x86"// Intel64 Family 6 Model 142 Stepping 12String identifier = processorIdentifier.getIdentifier();long vendorFreq = processorIdentifier.getVendorFreq();System.out.println("vendor: " + vendor);// 处理器名字System.out.println("name: " + name);System.out.println("family: " + family);System.out.println("model: " + model);System.out.println("stepping: " + stepping);System.out.println("processorID: " + processorID);System.out.println("identifier: " + identifier);System.out.println("vendorFreq: " + vendorFreq);}

RESULT:

 4.引入包后方法不存在

 需要引入下面的包：

// 正确包import com.sun.management.OperatingSystemMXBean;/// 错误包//import java.lang.management.OperatingSystemMXBean;

 5. 获取的cpu利用率和任务管理器cpu利用率值差距问题

 就是需要配置在CentralProcessor实例化之前：配置上也会有差距，相对准确率高一些。

GlobalConfig.set(GlobalConfig.OSHI_OS_WINDOWS_CPU_UTILITY, true);

具体可以看 Lead delveloper of Oshi Daniel Widdis github:

oshi/FAQ.md at master · oshi/oshi · GitHubNative Operating System and Hardware Information. Contribute to oshi/oshi development by creating an account on GitHub.https://github.com/oshi/oshi/blob/master/src/site/markdown/FAQ.md参考博客：解决Oshi获取CPU使用率与Windows任务管理器显示不匹配的问题_CTimet的博客-CSDN博客

来源地址：https://blog.csdn.net/m0_48983233/article/details/128231403