SpringBoot 封装Windows 性能监控

整体项目结构：

BlueSky 的pom.xml 文件：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>com.zzg</groupId>
	<artifactId>BuleSky</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>pom</packaging>

	<!--springboot 父类 -->
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.1.0.RELEASE</version>
	</parent>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<java.version>1.8</java.version>
	</properties>

	<dependencies>
		<!--springboot 依赖web -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<!--springboot 依赖test -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
		</dependency>
		<!--springboot 依赖devtool -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-devtools</artifactId>
		</dependency>
		<!--lombak 集成 -->
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<version>1.18.0</version>
		</dependency>
		<!--apache common 工具包 -->
		<dependency>
			<groupId>commons-net</groupId>
			<artifactId>commons-net</artifactId>
			<version>3.6</version>
		</dependency>
		 <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.8.1</version>
        </dependency>
	</dependencies>
	<modules>
		<module>common-ssh</module>
		<module>common-ftp</module>
		<module>common-fastdfs</module>
		<module>common-monitor-windows</module>
		<module>common-monitor_linux</module>
		<module>common-elasticsearch</module>
	</modules>
</project>

common-monitor-windows 项目结构：

Application.java

package com.zzg.common;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class Application {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		SpringApplication.run(Application.class, args);
	}

}

Cpu.java

package com.zzg.common.entity;


import com.zzg.common.util.Arith;

import lombok.Getter;
import lombok.Setter;

public class Cpu {
	/**
     * 核心数
     */
	@Getter
	@Setter
    private int cpuNum;

    /**
     * CPU总的使用率
     */
	@Setter
    private double total;

    /**
     * CPU系统使用率
     */
	@Setter
    private double sys;

    /**
     * CPU用户使用率
     */
	@Setter
    private double used;

    /**
     * CPU当前等待率
     */
	@Setter
    private double wait;

    /**
     * CPU当前空闲率
     */
	@Setter
    private double free;


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

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

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

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

Jvm.java

package com.zzg.common.entity;

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

import lombok.Getter;
import lombok.Setter;


/**
 * 虚拟机相关设置
 * @author zzg
 *
 */
public class Jvm {
	/**
     * 当前JVM占用的内存总数(M)
     */
	@Setter
    private double total;

    /**
     * JVM最大可用内存总数(M)
     */
	@Setter
    private double max;

    /**
     * JVM空闲内存(M)
     */
	@Setter
    private double free;

    /**
     * JDK版本
     */
	@Getter
	@Setter
    private String version;

    /**
     * JDK路径
     */
	@Getter
	@Setter
    private String home;

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

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

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

    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();
    }

    /**
     * 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());
    }
}

Mem.java

package com.zzg.common.entity;

import com.zzg.common.util.Arith;

import lombok.Setter;

/**
 * 内存相关信息
 * @author zzg
 *
 */
public class Mem {
	/**
     * 内存总量
     */
	@Setter
    private double total;

    /**
     * 已用内存
     */
	@Setter
    private double used;

    /**
     * 剩余内存
     */
	@Setter
    private double free;

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

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

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

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

Sys.java

package com.zzg.common.entity;

import lombok.Getter;
import lombok.Setter;

/**
 * 系统相关信息
 * @author zzg
 *
 */
public class Sys {
	/**
     * 服务器名称
     */
	@Getter
	@Setter
    private String computerName;

    /**
     * 服务器Ip
     */
	@Getter
	@Setter
    private String computerIp;

    /**
     * 项目路径
     */
	@Getter
	@Setter
    private String userDir;

    /**
     * 操作系统
     */
	@Getter
	@Setter
    private String osName;

    /**
     * 系统架构
     */
	@Getter
	@Setter
    private String osArch;		
}

SysFile.java

package com.zzg.common.entity;

import lombok.Getter;
import lombok.Setter;

/**
 * 系统文件相关信息
 * @author zzg
 *
 */
public class SysFile {
	 /**
     * 盘符路径
     */
	@Getter
	@Setter
    private String dirName;

    /**
     * 盘符类型
     */
	@Getter
	@Setter
    private String sysTypeName;

    /**
     * 文件类型
     */
	@Getter
	@Setter
    private String typeName;

    /**
     * 总大小
     */
	@Getter
	@Setter
    private String total;

    /**
     * 剩余大小
     */
	@Getter
	@Setter
    private String free;

    /**
     * 已经使用量
     */
	@Getter
	@Setter
    private String used;

    /**
     * 资源的使用率
     */
	@Getter
	@Setter
    private double usage;
}

Server.java

package com.zzg.common.server;

import java.io.Serializable;
import java.net.UnknownHostException;
import java.util.LinkedList;
import java.util.List;
import java.util.Properties;

import com.zzg.common.entity.Cpu;
import com.zzg.common.entity.Jvm;
import com.zzg.common.entity.Mem;
import com.zzg.common.entity.Sys;
import com.zzg.common.entity.SysFile;
import com.zzg.common.util.Arith;
import com.zzg.common.util.IpUtils;

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

public class Server implements Serializable {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	private static final int OSHI_WAIT_SECOND = 1000;

	/**
	 * CPU相关信息
	 */
	@Getter
	@Setter
	private Cpu cpu = new Cpu();

	/**
	 * 內存相关信息
	 */
	@Getter
	@Setter
	private Mem mem = new Mem();

	/**
	 * JVM相关信息
	 */
	@Getter
	@Setter
	private Jvm jvm = new Jvm();

	/**
	 * 服务器相关信息
	 */
	@Getter
	@Setter
	private Sys sys = new Sys();

	/**
	 * 磁盘相关信息
	 */
	@Getter
	@Setter
	private List<SysFile> sysFiles = new LinkedList<SysFile>();
	

	 public void copyTo() throws Exception {
	        SystemInfo si = new SystemInfo();
	        HardwareAbstractionLayer hal = si.getHardware();

	        setCpuInfo(hal.getProcessor());

	        setMemInfo(hal.getMemory());

	        setSysInfo();

	        setJvmInfo();

	        setSysFiles(si.getOperatingSystem());
	    }

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

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

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

	    /**
	     * 设置Java虚拟机
	     */
	    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"));
	    }

	    /**
	     * 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(Arith.mul(Arith.div(used, total, 4), 100));
	            sysFiles.add(sysFile);
	        }
	    }

	    /**
	     * 字节转换
	     *
	     * @param size 字节大小
	     * @return 转换后值
	     */
	    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);
	        }
	    }
}

Arith.java

package com.zzg.common.util;

import java.math.BigDecimal;

/**
 * 精度计算工具
 * @author zzg
 *
 */
public class Arith {
	 /**
     * 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 Arith() {
    }

    /**
     * 提供精确的加法运算。
     *
     * @param v1 被加数
     * @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 被减数
     * @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 被乘数
     * @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
     * 小数点以后10位，以后的数字四舍五入。
     *
     * @param v1 被除数
     * @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参数指
     * 定精度，以后的数字四舍五入。
     *
     * @param v1    被除数
     * @param v2    除数
     * @param scale 表示表示需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 (BigDecimal.ZERO.compareTo(b1.multiply(b2)) == 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     需要四舍五入的数字
     * @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();
    }
}

DateUtils.java

package com.zzg.common.util;

import java.lang.management.ManagementFactory;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.apache.commons.lang3.ObjectUtils;
import org.apache.commons.lang3.time.DateFormatUtils;

/**
 * 时间工具类
 * @author zzg
 *
 */
public class DateUtils extends org.apache.commons.lang3.time.DateUtils {
	public static final String YYYY = "yyyy" ;

    public static final String YYYY_MM = "yyyy-MM" ;

    public static final String YYYY_MM_DD = "yyyy-MM-dd" ;

    public static final String YYYYMMDDHHMMSS = "yyyyMMddHHmmss" ;

    public static final String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss" ;

    private static String[] parsePatterns = {
            YYYY_MM_DD , YYYY_MM_DD_HH_MM_SS , "yyyy-MM-dd HH:mm" , YYYY_MM ,
            "yyyy/MM/dd" , "yyyy/MM/dd HH:mm:ss" , "yyyy/MM/dd HH:mm" , "yyyy/MM" ,
            "yyyy.MM.dd" , "yyyy.MM.dd HH:mm:ss" , "yyyy.MM.dd HH:mm" , "yyyy.MM"};

    /**
     * 获取当前Date型日期
     *
     * @return Date() 当前日期
     */
    public static Date getNowDate() {
        return new Date();
    }

    /**
     * 获取当前日期, 默认格式为yyyy-MM-dd
     *
     * @return String
     */
    public static String getDate() {
        return dateTimeNow(YYYY_MM_DD);
    }

    public static final String getTime() {
        return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
    }

    public static final String dateTimeNow() {
        return dateTimeNow(YYYYMMDDHHMMSS);
    }

    public static final String dateTimeNow(final String format) {
        return parseDateToStr(format, new Date());
    }

    public static final String dateTime(final Date date) {
        return parseDateToStr(YYYY_MM_DD, date);
    }

    public static final String parseDateToStr(final String format, final Date date) {
        if(ObjectUtils.allNotNull(date)){
            return new SimpleDateFormat(format).format(date);
        }
        return null;
    }


    /**
     * 日期路径 即年/月/日 如2018/08/08
     */
    public static final String datePath() {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyy/MM/dd");
    }

    /**
     * 日期路径 即年/月/日 如20180808
     */
    public static final String dateTime() {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyyMMdd");
    }

    /**
     * 日期型字符串转化为日期 格式
     */
    public static Date parseDate(Object str) {
        if (str == null) {
            return null;
        }
        try {
            return parseDate(str.toString(), parsePatterns);
        } catch (ParseException e) {
            return null;
        }
    }

    /**
     * 获取服务器启动时间
     */
    public static Date getServerStartDate() {
        long time = ManagementFactory.getRuntimeMXBean().getStartTime();
        return new Date(time);
    }

    /**
     * 计算两个时间差
     */
    public static String getDatePoor(Date endDate, Date nowDate) {
        long nd = (long)1000 * 24 * 60 * 60;
        long nh = (long)1000 * 60 * 60;
        long nm = (long)1000 * 60;
        // 获得两个时间的毫秒时间差异
        long diff = endDate.getTime() - nowDate.getTime();
        // 计算差多少天
        long day = diff / nd;
        // 计算差多少小时
        long hour = diff % nd / nh;
        // 计算差多少分钟
        long min = diff % nd % nh / nm;
        // 计算差多少秒//输出结果
        return day + "天" + hour + "小时" + min + "分钟" ;
    }
}

IpUtils.java

package com.zzg.common.util;

import java.net.InetAddress;
import java.net.UnknownHostException;
import javax.servlet.http.HttpServletRequest;


import lombok.extern.slf4j.Slf4j;

@Slf4j
public class IpUtils {
	public static final String LOCAL_IP="127.0.0.1";
	
	 private IpUtils(){
	        throw new IllegalStateException("Utility class");
	    }
	    public static String getIpAddr(HttpServletRequest request) {
	        String unknown = "unknown";
	        if (request == null) {
	            return unknown;
	        }
	        String ip = request.getHeader("x-forwarded-for");
	        if (ip == null || ip.length() == 0 || unknown.equalsIgnoreCase(ip)) {
	            ip = request.getHeader("Proxy-Client-IP");
	        }
	        if (ip == null || ip.length() == 0 || unknown.equalsIgnoreCase(ip)) {
	            ip = request.getHeader("X-Forwarded-For");
	        }
	        if (ip == null || ip.length() == 0 || unknown.equalsIgnoreCase(ip)) {
	            ip = request.getHeader("WL-Proxy-Client-IP");
	        }
	        if (ip == null || ip.length() == 0 || unknown.equalsIgnoreCase(ip)) {
	            ip = request.getHeader("X-Real-IP");
	        }

	        if (ip == null || ip.length() == 0 || unknown.equalsIgnoreCase(ip)) {
	            ip = request.getRemoteAddr();
	        }

	        return "0:0:0:0:0:0:0:1".equals(ip) ? LOCAL_IP : ip;
	    }

	    public static boolean internalIp(String ip) {
	        byte[] addr = textToNumericFormatV4(ip);
	        return internalIp(addr) || LOCAL_IP.equals(ip);
	    }

	    private static boolean internalIp(byte[] addr) {
	        if(addr == null || addr.length<1){
	            return false;
	        }
	        final byte b0 = addr[0];
	        final byte b1 = addr[1];
	        // 10.x.x.x/8
	        final byte section1 = 0x0A;
	        // 172.16.x.x/12
	        final byte section2 = (byte) 0xAC;
	        final byte section3 = (byte) 0x10;
	        final byte section4 = (byte) 0x1F;
	        // 192.168.x.x/16
	        final byte section5 = (byte) 0xC0;
	        final byte section6 = (byte) 0xA8;
	        switch (b0) {
	            case section1:
	                return true;
	            case section2:
	                if (b1 >= section3 && b1 <= section4) {
	                    return true;
	                }else {
	                    return false;
	                }
	            case section5:
	                if(b1 == section6){
	                    return true;
	                }else {
	                    return false;
	                }
	            default:
	                return false;
	        }
	    }

	    /**
	     * 将IPv4地址转换成字节
	     *
	     * @param text IPv4地址
	     * @return byte 字节
	     */
	    public static byte[] textToNumericFormatV4(String text) {
	        byte[] emptyByte = new byte[0];
	        if (text.length() == 0) {
	            return emptyByte;
	        }

	        byte[] bytes = new byte[4];
	        String[] elements = text.split("\\.", -1);
	        try {
	            long l;
	            int i;
	            switch (elements.length) {
	                case 1:
	                    l = Long.parseLong(elements[0]);
	                    if ((l < 0L) || (l > 4294967295L)) {
	                        return emptyByte;
	                    }
	                    bytes[0] = (byte) (int) (l >> 24 & 0xFF);
	                    bytes[1] = (byte) (int) ((l & 0xFFFFFF) >> 16 & 0xFF);
	                    bytes[2] = (byte) (int) ((l & 0xFFFF) >> 8 & 0xFF);
	                    bytes[3] = (byte) (int) (l & 0xFF);
	                    break;
	                case 2:
	                    l = Integer.parseInt(elements[0]);
	                    if ((l < 0L) || (l > 255L)) {
	                        return emptyByte;
	                    }
	                    bytes[0] = (byte) (int) (l & 0xFF);
	                    l = Integer.parseInt(elements[1]);
	                    if ((l < 0L) || (l > 16777215L)) {
	                        return emptyByte;
	                    }
	                    bytes[1] = (byte) (int) (l >> 16 & 0xFF);
	                    bytes[2] = (byte) (int) ((l & 0xFFFF) >> 8 & 0xFF);
	                    bytes[3] = (byte) (int) (l & 0xFF);
	                    break;
	                case 3:
	                    for (i = 0; i < 2; ++i) {
	                        l = Integer.parseInt(elements[i]);
	                        if ((l < 0L) || (l > 255L)) {
	                            return emptyByte;
	                        }
	                        bytes[i] = (byte) (int) (l & 0xFF);
	                    }
	                    l = Integer.parseInt(elements[2]);
	                    if ((l < 0L) || (l > 65535L)) {
	                        return emptyByte;
	                    }
	                    bytes[2] = (byte) (int) (l >> 8 & 0xFF);
	                    bytes[3] = (byte) (int) (l & 0xFF);
	                    break;
	                case 4:
	                    for (i = 0; i < 4; ++i) {
	                        l = Integer.parseInt(elements[i]);
	                        if ((l < 0L) || (l > 255L)) {
	                            return emptyByte;
	                        }
	                        bytes[i] = (byte) (int) (l & 0xFF);
	                    }
	                    break;
	                default:
	                    return emptyByte;
	            }
	        } catch (NumberFormatException e) {
	            return emptyByte;
	        }
	        return bytes;
	    }

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

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