服务器监控功能（3种方案）

- - - 一、Actuator监控
    - - 1. 添加依赖
      - 2. application.yaml配置
      - 3. 启动项目，访问
    - 二、SpringBoot Admin（单体）
    - - 1. Admin Server 端
      - 2. Admin Client 端
    - 三、OSHI
    - - 1. pom.xml依赖
      - 2. 接口返回数据
      - 3. 代码

一、Actuator监控

Actuator是Springboot提供的用来对应用系统进行自省和监控的功能模块，借助于Actuator开发者可以很方便地对应用系统某些监控指标进行查看、统计等。

部署简单、直接调接口拿值、数据较分散，需处理

1. 添加依赖


	org.springframework.boot
	spring-boot-starter-actuator

2. application.yaml配置

#actuator监控配置
 management:
 	endpoints:
 		web:
   			exposure:
     			#默认值访问health,info端点  用*可以包含全部端点
     			include: '*'
     		#配置路径
        	base-path: /system/actuator
  	endpoint:
    	health:
      		#获得健康检查中所有指标的详细信息
      		show-details: always

3. 启动项目，访问

以下显示的路径，都是可以被健康检查的指标

其中谷歌浏览器显示格式为 JSON，是因为下载了 JSON-handle 插件

访问路径：项目路径+actuator配置路径：
Actuator健康项：

二、SpringBoot Admin（单体）

可监控的信息包含：应用状态、内存、线程、堆栈等等，比较全面的监控了 Spring Boot 应用的整个生命周期。

在Spring Boot Actuator的基础上提供简洁的可视化WEB UI

SpringBoot Admin 分为服务端(spring-boot-admin-server)和客户端(spring-boot-admin-client)，客户端就是指需要被监控的应用端（项目启动位置）

1. Admin Server 端

新建一个项目模块，项目依赖


    de.codecentric
    spring-boot-admin-starter-server
    2.1.0
 
 
    org.springframework.boot
    spring-boot-starter-web

application.yaml 配置文件

# 配置tomcat访问端口
server:
  port: 8000

启动类

import de.codecentric.boot.admin.server.config.EnableAdminServer;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.Configuration;


@Configuration
@EnableAutoConfiguration
@EnableAdminServer
public class AdminServerApplication {

    public static void main(String[] args) {
        SpringApplication.run(AdminServerApplication.class, args);
    }
}

访问浏览器 http://localhost:8000

2. Admin Client 端

在原本项目基础上，添加依赖


    
      de.codecentric
      spring-boot-admin-starter-client
      2.1.0
    
    
      org.springframework.boot
      spring-boot-starter-web

配置文件

# 配置访问端口
server:
  port: 20211
spring:
  application:
    name: Admin Client
  # 配置AdminServer的地址
  boot:
    admin:
      client:
        url: http://localhost:8000
# 打开客户端的监控
management:
  endpoints:
    web:
      exposure:
        include: *

客户端启动类

@SpringBootApplication
public class AdminClientApplication {
  public static void main(String[] args) {
    SpringApplication.run(AdminClientApplication.class, args);
  }
}

先启动服务端，再启动客户端

启动 Client 端，Admin 服务端会自动检查到客户端的变化，并展示其应用

页面会展示被监控的服务列表，点击详项目名称会进入此应用的详细监控信息

三、OSHI

基于JNA的免费的本地操作系统和Java的硬件信息库，可以跨平台，获取监控信息简单

1. pom.xml依赖


	com.github.oshi
     oshi-core
     5.6.0

2. 接口返回数据 3. 代码

Controller

import com.lzby.tqj.dto.AjaxResult;
import com.lzby.tqj.entity.Server;
import io.swagger.*;
import org.springframework.web.bind.annotation.*;


@CrossOrigin(origins = "*", maxAge = 3600)
@Api(tags = "系统-服务器监控")
@RestController
@RequestMapping("/monitor/server")
public class ServerController {

    @ApiOperation(value = "获得服务器相关信息", notes = "获得服务器相关信息")
    @PostMapping(value = "/getInfo")
    public AjaxResult getInfo() throws Exception {
        Server server = new Server();
        server.copyTo();
        return AjaxResult.success(server);
    }
}

entity - Server

package com.lzby.tqj.entity;

import com.lzby.tqj.common.IpUtils;
import com.lzby.tqj.common.util.Arith;
import com.lzby.tqj.entity.server.*;
import oshi.*;

import java.net.InetAddress;

import java.util.*;


public class Server {
    private static final int OSHI_WAIT_SECOND = 1000;

    // CPU相关信息
    private Cpu cpu = new Cpu();

    // 內存相关信息
    private Mem mem = new Mem();

    // JVM相关信息
    private Jvm jvm = new Jvm();

    // 服务器相关信息
    private Sys sys = new Sys();

    // 磁盘相关信息
    private List sysFiles = new linkedList();

    public Cpu getCpu() {
        return cpu;
    }

    public void setCpu(Cpu cpu) {
        this.cpu = cpu;
    }

    public Mem getMem() {
        return mem;
    }

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

    public Jvm getJvm() {
        return jvm;
    }

    public void setJvm(Jvm jvm) {
        this.jvm = jvm;
    }

    public Sys getSys() {
        return sys;
    }

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

    public List getSysFiles() {
        return sysFiles;
    }

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

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

    
    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;
        cpu.setCpuNum(processor.getLogicalProcessorCount());
        cpu.setTotal(totalCpu);
        cpu.setSys(cSys);
        cpu.setUsed(user);
        cpu.setWait(iowait);
        cpu.setFree(idle);
    }

    
    private void setMemInfo(GlobalMemory memory) {
        mem.setTotal(memory.getTotal());
        mem.setUsed(memory.getTotal() - memory.getAvailable());
        mem.setFree(memory.getAvailable());
    }

    
    private void setSysInfo() {
        Properties props = System.getProperties();
        sys.setComputerName(getHostName());
        sys.setComputerIp(getHostIp());
        sys.setOsName(props.getProperty("os.name"));
        sys.setOsArch(props.getProperty("os.arch"));
        sys.setUserDir(props.getProperty("user.dir"));
    }

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

    
    private void setSysFiles(OperatingSystem os) {
        FileSystem fileSystem = os.getFileSystem();
        List 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(Arith.mul(Arith.div(used, total, 4), 100));
            sysFiles.add(sysFile);
        }
    }

    
    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);
        }
    }
    
    public static String getHostIp() {
        try {
            return InetAddress.getLocalHost().getHostAddress();
        } catch (UnknownHostException e) {
        }
        return "127.0.0.1";
    }

    public static String getHostName() {
        try {
            return InetAddress.getLocalHost().getHostName();
        } catch (UnknownHostException e) {
        }
        return "未知";
    }
}

entity - Cpu

package com.lzby.tqj.entity.server;

import com.lzby.tqj.common.util.Arith;


public class Cpu
{
    // 核心数
    private int cpuNum;

    // CPU总的使用率
    private double total;

    // CPU系统使用率
    private double sys;

    // CPU用户使用率
    private double used;

    // CPU当前等待率
    private double wait;

    // CPU当前空闲率
    private double free;

    public int getCpuNum(){
        return cpuNum;
    }

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

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

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

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

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

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

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

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

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

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

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

entity - Mem

package com.lzby.tqj.entity.server;

import com.lzby.tqj.common.util.Arith;


public class Mem{
    // 内存总量
    private double total;

    // 已用内存
    private double used;

    // 剩余内存
    private double free;

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

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

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

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

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

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

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

entity - Jvm

package com.lzby.tqj.entity.server;

import java.lang.management.ManagementFactory;
import com.lzby.tqj.common.util.Arith;
import com.lzby.tqj.common.util.DateUtils;


public class Jvm{
    // 当前JVM占用的内存总数(M)
    private double total;

    // JVM最大可用内存总数(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 Arith.div(total, (1024 * 1024), 2);
    }

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

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

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

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

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

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

    public double getUsage(){
        return Arith.mul(Arith.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 DateUtils.parseDateToStr(DateUtils.YYYY_MM_DD_HH_MM_SS, DateUtils.getServerStartDate());
    }

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

entity - Jvm

package com.lzby.tqj.entity.server;

import lombok.Data;


@Data
public class Sys{
    
    // 服务器名称
    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;
}

工具类 Arith

package com.lzby.tqj.common.util;

import java.math.BigDecimal;
import java.math.RoundingMode;


public class Arith{

    
    private static final int DEF_DIV_SCALE = 10;

    
    private Arith(){}

    
    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();
    }

    
    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();
    }

    
    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, RoundingMode.HALF_UP).doublevalue();
    }

    
    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, RoundingMode.HALF_UP).doublevalue();
    }
}

服务器监控功能（3种方案）

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