生成可执行jar

pom.xml：

"1.0" encoding="UTF-8"?>
<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>4.0.0modelVersion>
 
    <groupId>org.examplegroupId>
    <artifactId>ServerInfoPrintartifactId>
    <version>1.0-SNAPSHOTversion>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.pluginsgroupId>
                <artifactId>maven-compiler-pluginartifactId>
                <configuration>
                    <source>8source>
                    <target>8target>
                configuration>
            plugin>
        plugins>
    build>
 
 
project>

 Boot.java：

import os.AbstractServerInfo;
import os.LinuxServerInfo;
import os.WindowsServerInfo;
 
import java.util.List;
 
public class Boot {
 
    public static void printServerInfo() throws Exception {
        String osName = System.getProperty("os.name").toLowerCase();
        AbstractServerInfo serverInfo;
        //根据不同操作系统类型选择不同的数据获取方法
        if (osName.startsWith("windows")) {
            serverInfo = new WindowsServerInfo();
        } else if (osName.startsWith("linux")) {
            serverInfo = new LinuxServerInfo();
        }else{//其他服务器类型
            serverInfo = new LinuxServerInfo();
        }
        System.out.println( "server info:" );
        System.out.println( "macAddress list:" );
        List macAddressList = serverInfo.getMacAddress();
        if( macAddressList == null ){
            return;
        }
        for( String macAddress:macAddressList ){
            System.out.println( "   " + macAddress );
        }
    }
    public static void main(String[] args) throws Exception {
        printServerInfo();
    }
}

AbstractServerInfo.java：

package os;
 
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
 
public abstract class AbstractServerInfo {
 
    /**
     * 获取Mac地址
     */
    public abstract List getMacAddress() throws Exception;
 
    /**
     * 获取当前服务器所有符合条件的InetAddress
     */
    protected List getLocalAllInetAddress() throws Exception {
        List result = new ArrayList<>(4);
 
        // 遍历所有的网络接口
        for (Enumeration networkInterfaces = NetworkInterface.getNetworkInterfaces(); networkInterfaces.hasMoreElements(); ) {
            NetworkInterface iface = (NetworkInterface) networkInterfaces.nextElement();
            // 在所有的接口下再遍历IP
            for (Enumeration inetAddresses = iface.getInetAddresses(); inetAddresses.hasMoreElements(); ) {
                InetAddress inetAddr = (InetAddress) inetAddresses.nextElement();
 
                //排除LoopbackAddress、SiteLocalAddress、LinkLocalAddress、MulticastAddress类型的IP地址
                if (!inetAddr.isLoopbackAddress() /*&& !inetAddr.isSiteLocalAddress()*/
                        && !inetAddr.isLinkLocalAddress() && !inetAddr.isMulticastAddress()) {
                    result.add(inetAddr);
                }
            }
        }
        return result;
    }
 
    /**
     * 获取某个网络接口的Mac地址
     */
    protected String getMacByInetAddress(InetAddress inetAddr) {
        try {
            byte[] mac = NetworkInterface.getByInetAddress(inetAddr).getHardwareAddress();
            StringBuffer stringBuffer = new StringBuffer();
 
            for (int i = 0; i < mac.length; i++) {
                if (i != 0) {
                    stringBuffer.append("-");
                }
 
                //将十六进制byte转化为字符串
                String temp = Integer.toHexString(mac[i] & 0xff);
                if (temp.length() == 1) {
                    stringBuffer.append("0" + temp);
                } else {
                    stringBuffer.append(temp);
                }
            }
            return stringBuffer.toString().toUpperCase();
        } catch (SocketException e) {
            e.printStackTrace();
        }
        return null;
    }
}

 LinuxServerInfo.java：

package os;
 
import java.net.InetAddress;
import java.util.List;
import java.util.stream.Collectors;
 
public class LinuxServerInfo extends AbstractServerInfo {
 
    @Override
    public List getMacAddress() throws Exception {
        List result = null;
 
        //1. 获取所有网络接口
        List inetAddresses = getLocalAllInetAddress();
 
        if (inetAddresses != null && inetAddresses.size() > 0) {
            //2. 获取所有网络接口的Mac地址
            result = inetAddresses.stream().map(this::getMacByInetAddress).distinct().collect(Collectors.toList());
        }
 
        return result;
    }
}

WindowsServerInfo.java：

package os;
 
import java.net.InetAddress;
import java.util.List;
import java.util.stream.Collectors;
 
public class WindowsServerInfo extends AbstractServerInfo {
 
    @Override
    public List getMacAddress() throws Exception {
        List result = null;
 
        //1. 获取所有网络接口
        List inetAddresses = getLocalAllInetAddress();
 
        if (inetAddresses != null && inetAddresses.size() > 0) {
            //2. 获取所有网络接口的Mac地址
            result = inetAddresses.stream().map(this::getMacByInetAddress).distinct().collect(Collectors.toList());
        }
 
        return result;
    }
}

步骤：

        cmd
        cd E:\git\ServerInfoPrint
        mvn  clean
        mvn install
        cd E:\git\ServerInfoPrint\target\classes
        jar cvf ServerInfoPrinter.jar ./
        打开 ServerInfoPrinter.jar  中的 META-INF/MANIFEST.MF 文件，在最后面添加一行"Main-Class: Boot"
        java -jar ServerInfoPrinter.jar