midware-base/midware-util/src/main/java/midware/util/helper/IpHelper.java

package midware.util.helper;

import java.net.Inet4Address;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;

public class IpHelper {
    public static String getIp4(){
        String hostIP="";
        try {
            Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
            while (networkInterfaces.hasMoreElements()) {
                NetworkInterface ni = networkInterfaces.nextElement();
                Enumeration<InetAddress> nias = ni.getInetAddresses();
                while (nias.hasMoreElements()) {
                    InetAddress ia = nias.nextElement();
                    if (!ia.isLinkLocalAddress() && !ia.isLoopbackAddress() && ia instanceof Inet4Address) {
                        hostIP=ia.getHostAddress();
                    }
                }
            }
        } catch (SocketException e) {
            e.printStackTrace();
        }
        return hostIP;
    }

    public static String getMac() {
        String mac = "";
        try {
            Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
            while (networkInterfaces.hasMoreElements()) {
                NetworkInterface ni = networkInterfaces.nextElement();
                if (ni.isLoopback() || ni.isVirtual() || !ni.isUp()) continue;
                boolean ip4 = false;
                Enumeration<InetAddress> nias = ni.getInetAddresses();
                while (nias.hasMoreElements()) {
                    InetAddress ia = nias.nextElement();
                    if (!ia.isLinkLocalAddress() && !ia.isLoopbackAddress() && ia instanceof Inet4Address) {
                        ip4 = true;
                    }
                }
                if (!ip4) continue;
                byte[] macByte = ni.getHardwareAddress();
                if (macByte == null) continue;
                StringBuilder buf = new StringBuilder();
                for (byte aMac : macByte) {
                    buf.append(String.format("%02X-", aMac));
                }
                if (buf.length() > 0) {
                    buf.deleteCharAt(buf.length() - 1);
                    mac = buf.toString();
                    break;
                }
            }
        } catch (SocketException e) {
            e.printStackTrace();
        }
        return mac;
    }
}