actuator java 开发 监控 java项目监控

        Java项目监控涉及到范围：CPU、内存、JVM、服务器信息、Java虚拟机信息、磁盘状态等信息。

        oshi是Java的免费基于JNA的（本机）操作系统和硬件信息库。它不需要安装任何其他本机库，并且旨在提供一种跨平台的实现来检索系统信息.

地址：https://oshi.github.io/oshi/

搭建项目：

pom:

<!-- 获取系统信息 -->
       <dependency>
            <groupId>com.github.oshi</groupId>
            <artifactId>oshi-dist</artifactId>
            <version>6.1.6</version>
            <type>pom</type>
        </dependency>

        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
            <version>2.6</version>
        </dependency>

控制类：

@RestController
@RequestMapping("system")
public class SystemController {
    @GetMapping("/info")
    public Result getSystemInfo() throws Exception {
        ServerInfomation serverInfomation = new ServerInfomation();
        serverInfomation.getSysInfo();
        return new Result(true, "数据查询成功", serverInfomation);
    }
}

相关类：

 算数工具类：

import java.math.BigDecimal;

/**
 * 精确的浮点数运算
 */
public class ArithUtils {
    /**
     * 默认除法运算精度
     */
    private static final int DEF_DIV_SCALE = 10;

    /**
     * 这个类不能实例化
     */
    private ArithUtils() {
    }

    /**
     * 提供精确的加法运算
     *
     * @param v1 被加
     * @param v2 加数
     * @return 两个参数的和
     */
    public static double add(double v1, double v2) {
        BigDecimal b1 = new BigDecimal(Double.toString(v1));
        BigDecimal b2 = new BigDecimal(Double.toString(v2));
        return b1.add(b2).doubleValue();
    }

    /**
     * 提供精确的减法运算
     *
     * @param v1 被减
     * @param v2 减数
     * @return 两个参数的差
     */
    public static double sub(double v1, double v2) {
        BigDecimal b1 = new BigDecimal(Double.toString(v1));
        BigDecimal b2 = new BigDecimal(Double.toString(v2));
        return b1.subtract(b2).doubleValue();
    }

    /**
     * 提供精确的乘法运算
     *
     * @param v1 被乘
     * @param v2 乘数
     * @return 两个参数的积
     */
    public static double mul(double v1, double v2) {
        BigDecimal b1 = new BigDecimal(Double.toString(v1));
        BigDecimal b2 = new BigDecimal(Double.toString(v2));
        return b1.multiply(b2).doubleValue();
    }

    /**
     * 提供（相对）精确的除法运算，当发生除不尽的情况时，精确到
     * 小数点以10位，以后的数字四舍五入
     *
     * @param v1 被除
     * @param v2 除数
     * @return 两个参数的商
     */
    public static double div(double v1, double v2) {
        return div(v1, v2, DEF_DIV_SCALE);
    }

    /**
     * 提供（相对）精确的除法运算?当发生除不尽的情况时，由scale参数
     * 定精度，以后的数字四舍五入
     *
     * @param v1    被除
     * @param v2    除数
     * @param scale 表示表示要精确到小数点以后几位
     * @return 两个参数的商
     */
    public static double div(double v1, double v2, int scale) {
        if (scale < 0) {
            throw new IllegalArgumentException(
                    "The scale must be a positive integer or zero");
        }
        BigDecimal b1 = new BigDecimal(Double.toString(v1));
        BigDecimal b2 = new BigDecimal(Double.toString(v2));
        if (b1.compareTo(BigDecimal.ZERO) == 0) {
            return BigDecimal.ZERO.doubleValue();
        }
        return b1.divide(b2, scale, BigDecimal.ROUND_HALF_UP).doubleValue();
    }

    /**
     * 提供精确的小数位四舍五入处理
     *
     * @param v     要四舍五入的数字
     * @param scale 小数点后保留几位
     * @return 四舍五入后的结果
     */
    public static double round(double v, int scale) {
        if (scale < 0) {
            throw new IllegalArgumentException(
                    "The scale must be a positive integer or zero");
        }
        BigDecimal b = new BigDecimal(Double.toString(v));
        BigDecimal one = new BigDecimal("1");
        return b.divide(one, scale, BigDecimal.ROUND_HALF_UP).doubleValue();
    }
}

CPU相关信息：

/**
 * CPU相关信息
 */
public class SysCpu {
    /**
     * 核心
     */
    private int cpuNum;
    /**
     * CPU总的使用
     */
    private double total;
    /**
     * CPU系统使用
     */
    private double sys;
    /**
     * CPU用户使用
     */
    private double used;
    /**
     * CPU当前等待
     */
    private double wait;
    /**
     * CPU当前空闲
     */
    private double free;

    public int getCpuNum() {
        return cpuNum;
    }

    public void setCpuNum(int cpuNum) {
        this.cpuNum = cpuNum;
    }

    public double getTotal() {
        return ArithUtils.round(ArithUtils.mul(total, 100), 2);
    }

    public void setTotal(double total) {
        this.total = total;
    }

    public double getSys() {
        return ArithUtils.round(ArithUtils.mul(sys / total, 100), 2);
    }

    public void setSys(double sys) {
        this.sys = sys;
    }

    public double getUsed() {
        return ArithUtils.round(ArithUtils.mul(used / total, 100), 2);
    }

    public void setUsed(double used) {
        this.used = used;
    }

    public double getWait() {
        return ArithUtils.round(ArithUtils.mul(wait / total, 100), 2);
    }

    public void setWait(double wait) {
        this.wait = wait;
    }

    public double getFree() {
        return ArithUtils.round(ArithUtils.mul(free / total, 100), 2);
    }

    public void setFree(double free) {
        this.free = free;
    }
}

內存相关信息：

/**
 * 內存相关信息
 */
public class SysMem {
    /**
     * 内存总量 (G)
     */
    private double total;
    /**
     * 已用内存 (G)
     */
    private double used;
    /**
     * 剩余内存 (G)
     */
    private double free;

    public double getTotal() {
        return ArithUtils.div(total, (1024 * 1024 * 1024), 2);
    }

    public void setTotal(long total) {
        this.total = total;
    }

    public double getUsed() {
        return ArithUtils.div(used, (1024 * 1024 * 1024), 2);
    }

    public void setUsed(long used) {
        this.used = used;
    }

    public double getFree() {
        return ArithUtils.div(free, (1024 * 1024 * 1024), 2);
    }

    public void setFree(long free) {
        this.free = free;
    }

    public double getUsage() {
        return ArithUtils.mul(ArithUtils.div(used, total, 4), 100);
    }
}

JVM相关信息：

/**
 * JVM相关信息
 */
public class SysJvm {
    /**
     * 当前JVM占用的内存(M)
     */
    private double total;
    /**
     * JVM大可用内存(M)
     */
    private double max;
    /**
     * JVM空闲内存(M)
     */
    private double free;
    /**
     * JDK版本
     */
    private String version;
    /**
     * JDK路径
     */
    private String home;

    public double getTotal() {
        return ArithUtils.div(total, (1024 * 1024), 2);
    }

    public void setTotal(double total) {
        this.total = total;
    }

    public double getMax() {
        return ArithUtils.div(max, (1024 * 1024), 2);
    }

    public void setMax(double max) {
        this.max = max;
    }

    public double getFree() {
        return ArithUtils.div(free, (1024 * 1024), 2);
    }

    public void setFree(double free) {
        this.free = free;
    }

    public double getUsed() {
        return ArithUtils.div(total - free, (1024 * 1024), 2);
    }

    public double getUsage() {
        return ArithUtils.mul(ArithUtils.div(total - free, total, 4), 100);
    }

    /**
     * 获取JDK名称
     */
    public String getName() {
        return ManagementFactory.getRuntimeMXBean().getVmName();
    }

    public String getVersion() {
        return version;
    }

    public void setVersion(String version) {
        this.version = version;
    }

    public String getHome() {
        return home;
    }

    public void setHome(String home) {
        this.home = home;
    }

    /**
     * JDK启动时间
     */
    public String getStartTime() {
        return DefDateUtils.parseDateToStr(DefDateUtils.YYYY_MM_DD_HH_MM_SS, DefDateUtils.getServerStartDate());
    }

    /**
     * JDK运行时间
     */
    public String getRunTime() {
        return DefDateUtils.getDatePoor(DefDateUtils.getNowDate(), DefDateUtils.getServerStartDate());
    }
}

系统相关信息：

/**
 * 系统相关信息
 */
public class SysBaseInfo {
    /**
     * 服务器名
     */
    private String computerName;
    /**
     * 服务器Ip
     */
    private String computerIp;
    /**
     * 项目路径
     */
    private String userDir;
    /**
     * 操作系统
     */
    private String osName;
    /**
     * 系统架构
     */
    private String osArch;

    public String getComputerName() {
        return computerName;
    }

    public void setComputerName(String computerName) {
        this.computerName = computerName;
    }

    public String getComputerIp() {
        return computerIp;
    }

    public void setComputerIp(String computerIp) {
        this.computerIp = computerIp;
    }

    public String getUserDir() {
        return userDir;
    }

    public void setUserDir(String userDir) {
        this.userDir = userDir;
    }

    public String getOsName() {
        return osName;
    }

    public void setOsName(String osName) {
        this.osName = osName;
    }

    public String getOsArch() {
        return osArch;
    }

    public void setOsArch(String osArch) {
        this.osArch = osArch;
    }
}

系统文件相关信息：

/**
 * 系统文件相关信息
 */
public class SysFile {
    /**
     * 盘符路径
     */
    private String dirName;
    /**
     * 盘符类型
     */
    private String sysTypeName;
    /**
     * 文件类型
     */
    private String typeName;
    /**
     * 总大
     */
    private String total;
    /**
     * 剩余大小
     */
    private String free;
    /**
     * 已经使用
     */
    private String used;
    /**
     * 资源的使用率
     */
    private double usage;

    public String getDirName() {
        return dirName;
    }

    public void setDirName(String dirName) {
        this.dirName = dirName;
    }

    public String getSysTypeName() {
        return sysTypeName;
    }

    public void setSysTypeName(String sysTypeName) {
        this.sysTypeName = sysTypeName;
    }

    public String getTypeName() {
        return typeName;
    }

    public void setTypeName(String typeName) {
        this.typeName = typeName;
    }

    public String getTotal() {
        return total;
    }

    public void setTotal(String total) {
        this.total = total;
    }

    public String getFree() {
        return free;
    }

    public void setFree(String free) {
        this.free = free;
    }

    public String getUsed() {
        return used;
    }

    public void setUsed(String used) {
        this.used = used;
    }

    public double getUsage() {
        return usage;
    }

    public void setUsage(double usage) {
        this.usage = usage;
    }
}

内存echarts：

public class MenModel {

    private String name;

    private String value;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getValue() {
        return value;
    }

    public void setValue(String value) {
        this.value = value;
    }
}

服务器相关信：

import oshi.SystemInfo;
import oshi.hardware.CentralProcessor;
import oshi.hardware.CentralProcessor.TickType;
import oshi.hardware.GlobalMemory;
import oshi.hardware.HardwareAbstractionLayer;
import oshi.software.os.FileSystem;
import oshi.software.os.OSFileStore;
import oshi.software.os.OperatingSystem;
import oshi.util.Util;

import java.net.UnknownHostException;
import java.util.*;

/**
 * 服务器相关信
 */
public class ServerInfomation {

    private static final int OSHI_WAIT_SECOND = 1000;
    /**
     * CPU相关信息
     */
    private SysCpu sysCpu = new SysCpu();
    /**
     * 內存相关信息
     */
    private SysMem sysMem = new SysMem();
    /**
     * JVM相关信息
     */
    private SysJvm sysJvm = new SysJvm();
    /**
     * 服务器相关信
     */
    private SysBaseInfo sysBaseInfo = new SysBaseInfo();
    /**
     * 磁盘相关信息
     */
    private List<SysFile> sysFiles = new LinkedList<SysFile>();

    private List<MenModel> memNameList=new ArrayList<>();


    public SysCpu getCpu() {
        return sysCpu;
    }

    public void setCpu(SysCpu sysCpu) {
        this.sysCpu = sysCpu;
    }

    public SysMem getMem() {
        return sysMem;
    }

    public void setMem(SysMem mem) {
        this.sysMem = mem;
    }

    public SysJvm getJvm() {
        return sysJvm;
    }

    public void setJvm(SysJvm sysJvm) {
        this.sysJvm = sysJvm;
    }

    public SysBaseInfo getSys() {
        return sysBaseInfo;
    }

    public void setSys(SysBaseInfo sysBaseInfo) {
        this.sysBaseInfo = sysBaseInfo;
    }

    public List<SysFile> getSysFiles() {
        return sysFiles;
    }

    public void setSysFiles(List<SysFile> sysFiles) {
        this.sysFiles = sysFiles;
    }

    public List<MenModel> getMemNameList() {
        return memNameList;
    }

    public void setMemNameList(List<MenModel> memNameList) {
        this.memNameList = memNameList;
    }


    public void getSysInfo() throws Exception {
        SystemInfo si = new SystemInfo();
        HardwareAbstractionLayer hal = si.getHardware();
        setCpuInfo(hal.getProcessor());
        setMemInfo(hal.getMemory());
        setSysInfo();
        setJvmInfo();
        setSysFiles(si.getOperatingSystem());
        setMenEcharts(getMem());
    }

    private void setMenEcharts(SysMem sysMem) {
        double free = sysMem.getFree();
        double used = sysMem.getUsed();
        double total = sysMem.getTotal();
        MenModel menModel=new MenModel();
        menModel.setName("总内存(G)");
        menModel.setValue(total+"");
        MenModel menModel1=new MenModel();
        menModel1.setName("已用内存(G)");
        menModel1.setValue(used+"");
        MenModel menModel2=new MenModel();
        menModel2.setName("剩余内存(G)");
        menModel2.setValue(free+"");

        memNameList.add(menModel);
        memNameList.add(menModel1);
        memNameList.add(menModel2);
    }

    /**
     * 设置CPU信息
     */
    private void setCpuInfo(CentralProcessor processor) {
        // CPU信息
        long[] prevTicks = processor.getSystemCpuLoadTicks();
        Util.sleep(OSHI_WAIT_SECOND);
        long[] ticks = processor.getSystemCpuLoadTicks();
        long nice = ticks[TickType.NICE.getIndex()] - prevTicks[TickType.NICE.getIndex()];
        long irq = ticks[TickType.IRQ.getIndex()] - prevTicks[TickType.IRQ.getIndex()];
        long softirq = ticks[TickType.SOFTIRQ.getIndex()] - prevTicks[TickType.SOFTIRQ.getIndex()];
        long steal = ticks[TickType.STEAL.getIndex()] - prevTicks[TickType.STEAL.getIndex()];
        long cSys = ticks[TickType.SYSTEM.getIndex()] - prevTicks[TickType.SYSTEM.getIndex()];
        long user = ticks[TickType.USER.getIndex()] - prevTicks[TickType.USER.getIndex()];
        long iowait = ticks[TickType.IOWAIT.getIndex()] - prevTicks[TickType.IOWAIT.getIndex()];
        long idle = ticks[TickType.IDLE.getIndex()] - prevTicks[TickType.IDLE.getIndex()];
        long totalCpu = user + nice + cSys + idle + iowait + irq + softirq + steal;
        sysCpu.setCpuNum(processor.getLogicalProcessorCount());
        sysCpu.setTotal(totalCpu);
        sysCpu.setSys(cSys);
        sysCpu.setUsed(user);
        sysCpu.setWait(iowait);
        sysCpu.setFree(idle);


    }

    /**
     * 设置内存信息
     */
    private void setMemInfo(GlobalMemory memory) {
        sysMem.setTotal(memory.getTotal());
        sysMem.setUsed(memory.getTotal() - memory.getAvailable());
        sysMem.setFree(memory.getAvailable());
    }

    /**
     * 设置服务器信
     */
    private void setSysInfo() {
        Properties props = System.getProperties();
        sysBaseInfo.setComputerName(IpUtils.getHostName());
        sysBaseInfo.setComputerIp(IpUtils.getHostIp());
        sysBaseInfo.setOsName(props.getProperty("os.name"));
        sysBaseInfo.setOsArch(props.getProperty("os.arch"));
        sysBaseInfo.setUserDir(props.getProperty("user.dir"));
    }

    /**
     * 设置Java虚拟
     */
    private void setJvmInfo() throws UnknownHostException {
        Properties props = System.getProperties();
        sysJvm.setTotal(Runtime.getRuntime().totalMemory());
        sysJvm.setMax(Runtime.getRuntime().maxMemory());
        sysJvm.setFree(Runtime.getRuntime().freeMemory());
        sysJvm.setVersion(props.getProperty("java.version"));
        sysJvm.setHome(props.getProperty("java.home"));
    }

    /**
     * 设置磁盘信息
     */
    private void setSysFiles(OperatingSystem os) {
        FileSystem fileSystem = os.getFileSystem();
        OSFileStore[] fsArray = fileSystem.getFileStores();
        for (OSFileStore fs : fsArray) {
            long free = fs.getUsableSpace();
            long total = fs.getTotalSpace();
            long used = total - free;
            SysFile sysFile = new SysFile();
            sysFile.setDirName(fs.getMount());
            sysFile.setSysTypeName(fs.getType());
            sysFile.setTypeName(fs.getName());
            sysFile.setTotal(convertFileSize(total));
            sysFile.setFree(convertFileSize(free));
            sysFile.setUsed(convertFileSize(used));
            sysFile.setUsage(ArithUtils.mul(ArithUtils.div(used, total, 4), 100));
            sysFiles.add(sysFile);
        }
    }

    /**
     * 字节转换
     *
     * @param size 字节大小
     * @return 转换后
     */
    public String convertFileSize(long size) {
        long kb = 1024;
        long mb = kb * 1024;
        long gb = mb * 1024;
        if (size >= gb) {
            return String.format("%.1f GB", (float) size / gb);
        } else if (size >= mb) {
            float f = (float) size / mb;
            return String.format(f > 100 ? "%.0f MB" : "%.1f MB", f);
        } else if (size >= kb) {
            float f = (float) size / kb;
            return String.format(f > 100 ? "%.0f KB" : "%.1f KB", f);
        } else {
            return String.format("%d B", size);
        }
    }
}

结果：