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目录
1.需要导入依赖包
<dependency> <groupId>com.github.oshi</groupId> <artifactId>oshi-core</artifactId> <version>3.12.2</version> </dependency> <dependency> <groupId>net.java.dev.jna</groupId> <artifactId>jna</artifactId> <version>5.2.0</version> </dependency> <dependency> <groupId>net.java.dev.jna</groupId> <artifactId>jna-platform</artifactId> <version>5.2.0</version> </dependency> // 当期最新版本，最新版本与上面版本方法有所区别 <dependency> <groupId>com.github.oshi</groupId> <artifactId>oshi-core</artifactId> <version>6.3.2</version> </dependency> <dependency> <groupId>net.java.dev.jna</groupId> <artifactId>jna</artifactId> <version>5.12.1</version> </dependency> <dependency> <groupId>net.java.dev.jna</groupId> <artifactId>jna-platform</artifactId> <version>5.12.1</version> </dependency>2.系统自带参数
private static void systemParamsNameAndValue() { Properties properties = System.getProperties(); Set<Map.Entry<Object, Object>> params = properties.entrySet(); for (Iterator<Map.Entry<Object, Object>> iterator = params.iterator(); iterator.hasNext();) { Map.Entry<Object, Object> 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: amd643.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; /*** * @author Benjamin * @date 2022/12/8 10:02:50 * @version 1.0.0 * @description 获取系统详细参数信息 * @param * @return void */ 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); } /** * 打印 CPU 信息 * @param systemInfo */ 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.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 + steal long 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 /* GlobalConfig.set(GlobalConfig.OSHI_OS_WINDOWS_CPU_UTILITY, true); cn.hutool.system.oshi.CpuInfo cpuInfo = OshiUtil.getCpuInfo(); double free = cpuInfo.getFree(); DecimalFormat format = new DecimalFormat("#.00"); System.out.println("cpu利用率：" + Double.parseDouble(format.format(100.0D - free))); */ /// 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); } /** * 获取进程id * @return */ 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 12 String 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
