java获取当前服务器状态cpu、内存、存储等核心信息

冷不防 2024-03-31 16:18 58阅读 0赞

**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 ##

<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: 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;

/***
    	 * @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:**

![e9c358b6bd344bff99f5fb5b30e497c3.png][]

## 4.引入包后方法不存在 ##

![75b3931431a143c2a426eab84cb9fbe2.jpeg][]

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 ##

![78704c4a8d574c3f97bba41bc97e1fe2.png][]

![b883cd1960074ec6baabdf53fba27185.png][]

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.![fluidicon.png][]https://github.com/oshi/oshi/blob/master/src/site/markdown/FAQ.md][oshi_FAQ.md at master _ oshi_oshi _ GitHubNative Operating System and Hardware Information. Contribute to oshi_oshi development by creating an account on GitHub._fluidicon.png_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][Oshi_CPU_Windows_CTimet_-CSDN]

[e9c358b6bd344bff99f5fb5b30e497c3.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/31/adfdb46f78f648869254b52dcea677fe.png
[75b3931431a143c2a426eab84cb9fbe2.jpeg]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/31/dbda6b7d45b04e90a9676e918017cce2.jpeg
[78704c4a8d574c3f97bba41bc97e1fe2.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/31/1e7af54d5ebf43d5a4e631fd073c76ce.png
[b883cd1960074ec6baabdf53fba27185.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/31/bb0cb9e724334068a1f6d8ec85297870.png
[fluidicon.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/31/28d527e25cf44bfe98475b73c2e65d94.png
[oshi_FAQ.md at master _ oshi_oshi _ GitHubNative Operating System and Hardware Information. Contribute to oshi_oshi development by creating an account on GitHub._fluidicon.png_https_github.com_oshi_oshi_blob_master_src_site_markdown_FAQ.md]: https://github.com/oshi/oshi/blob/master/src/site/markdown/FAQ.md
[Oshi_CPU_Windows_CTimet_-CSDN]: https://blog.csdn.net/DYxiao666/article/details/128678861?spm=1001.2014.3001.5501