java百分百获取到机器IP地址及MAC码

java百分百获取到机器IP地址及MAC码
已测系统：
windows linux unix
排除127.0.0.1 和 0.0.0.0.1等非正常IP
Java代码

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 class IpUtil {  

    private IpUtil(){}  
    /** 
     * 此方法描述的是：获得服务器的IP地址 
     * @author:  zhangyang33@sinopharm.com 
     * @version: 2014年9月5日 下午4:57:15 
     */  
    public static String getLocalIP() {  
        String sIP = "";  
        InetAddress ip = null;  
        try {  
            boolean bFindIP = false;  
            Enumeration<NetworkInterface> netInterfaces = (Enumeration<NetworkInterface>) NetworkInterface  
                    .getNetworkInterfaces();  
            while (netInterfaces.hasMoreElements()) {  
                if (bFindIP) {  
                    break;  
                }  
                NetworkInterface ni = (NetworkInterface) netInterfaces  
                        .nextElement();  

                Enumeration<InetAddress> ips = ni.getInetAddresses();  
                while (ips.hasMoreElements()) {  
                    ip = (InetAddress) ips.nextElement();  
                    if (!ip.isLoopbackAddress()   
                            && ip.getHostAddress().matches(  
                                    "(\\d{1,3}\\.){3}\\d{1,3}")) {  
                        bFindIP = true;  
                        break;  
                    }  
                }  
            }  
        } catch (Exception e) {  
            OutUtil.error(IpUtil.class, e.getMessage());  
        }  
        if (null != ip) {  
            sIP = ip.getHostAddress();  
        }  
        return sIP;  
    }  

    /** 
     * 此方法描述的是：获得服务器的IP地址(多网卡) 
     * @author:  zhangyang33@sinopharm.com 
     * @version: 2014年9月5日 下午4:57:15 
     */  
    public static List<String> getLocalIPS() {  
        InetAddress ip = null;  
        List<String> ipList = new ArrayList<String>();  
        try {  
            Enumeration<NetworkInterface> netInterfaces = (Enumeration<NetworkInterface>) NetworkInterface  
                    .getNetworkInterfaces();  
            while (netInterfaces.hasMoreElements()) {  
                NetworkInterface ni = (NetworkInterface) netInterfaces  
                        .nextElement();  
                Enumeration<InetAddress> ips = ni.getInetAddresses();  
                while (ips.hasMoreElements()) {  
                    ip = (InetAddress) ips.nextElement();  
                    if (!ip.isLoopbackAddress()   
                            && ip.getHostAddress().matches(  
                                    "(\\d{1,3}\\.){3}\\d{1,3}")) {  
                        ipList.add(ip.getHostAddress());  
                    }  
                }  
            }  
        } catch (Exception e) {  
            OutUtil.error(IpUtil.class, e.getMessage());  
        }  
        return ipList;  
    }  

    /** 
     * 此方法描述的是：获得服务器的MAC地址 
     * @author:  zhangyang33@sinopharm.com 
     * @version: 2014年9月5日 下午1:27:25 
     */  
    public static String getMacId() {  
        String macId = "";  
        InetAddress ip = null;  
        NetworkInterface ni = null;  
        try {  
            boolean bFindIP = false;  
            Enumeration<NetworkInterface> netInterfaces = (Enumeration<NetworkInterface>) NetworkInterface  
                    .getNetworkInterfaces();  
            while (netInterfaces.hasMoreElements()) {  
                if (bFindIP) {  
                    break;  
                }  
                ni = (NetworkInterface) netInterfaces  
                        .nextElement();  
                // ----------特定情况，可以考虑用ni.getName判断  
                // 遍历所有ip  
                Enumeration<InetAddress> ips = ni.getInetAddresses();  
                while (ips.hasMoreElements()) {  
                    ip = (InetAddress) ips.nextElement();  
                    if (!ip.isLoopbackAddress() // 非127.0.0.1  
                            && ip.getHostAddress().matches(  
                                    "(\\d{1,3}\\.){3}\\d{1,3}")) {  
                        bFindIP = true;  
                        break;  
                    }  
                }  
            }  
        } catch (Exception e) {  
            OutUtil.error(IpUtil.class, e.getMessage());  
        }  
        if (null != ip) {  
            try {  
                macId = getMacFromBytes(ni.getHardwareAddress());  
            } catch (SocketException e) {  
                OutUtil.error(IpUtil.class, e.getMessage());  
            }  
        }  
        return macId;  
    }  

    /** 
     * 此方法描述的是：获得服务器的MAC地址(多网卡) 
     * @author:  zhangyang33@sinopharm.com 
     * @version: 2014年9月5日 下午1:27:25 
     */  
    public static List<String> getMacIds() {  
        InetAddress ip = null;  
        NetworkInterface ni = null;  
        List<String> macList = new ArrayList<String>();  
        try {  
            Enumeration<NetworkInterface> netInterfaces = (Enumeration<NetworkInterface>) NetworkInterface  
                    .getNetworkInterfaces();  
            while (netInterfaces.hasMoreElements()) {  
                ni = (NetworkInterface) netInterfaces  
                        .nextElement();  
                // ----------特定情况，可以考虑用ni.getName判断  
                // 遍历所有ip  
                Enumeration<InetAddress> ips = ni.getInetAddresses();  
                while (ips.hasMoreElements()) {  
                    ip = (InetAddress) ips.nextElement();  
                    if (!ip.isLoopbackAddress() // 非127.0.0.1  
                            && ip.getHostAddress().matches(  
                                    "(\\d{1,3}\\.){3}\\d{1,3}")) {  
                        macList.add(getMacFromBytes(ni.getHardwareAddress()));  
                    }  
                }  
            }  
        } catch (Exception e) {  
            OutUtil.error(IpUtil.class, e.getMessage());  
        }  
        return macList;  
    }  

    private static String getMacFromBytes(byte[] bytes) {  
        StringBuffer mac = new StringBuffer();  
        byte currentByte;  
        boolean first = false;  
        for (byte b : bytes) {  
            if (first) {  
                mac.append("-");  
            }  
            currentByte = (byte) ((b & 240) >> 4);  
            mac.append(Integer.toHexString(currentByte));  
            currentByte = (byte) (b & 15);  
            mac.append(Integer.toHexString(currentByte));  
            first = true;  
        }  
        return mac.toString().toUpperCase();  
    }  

}  

原文地址:http://jdkleo.iteye.com/blog/2113782