JAVA获取IP和Mac地址

获取IP地址可以使用Java的InetAddress类，示例代码如下：

import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.UnknownHostException;

public class IPMacAddress {
    public static void main(String[] args) {
        try {
            InetAddress ip = InetAddress.getLocalHost();
            System.out.println("IP地址：" + ip.getHostAddress());

            NetworkInterface network = NetworkInterface.getByInetAddress(ip);

            byte[] mac = network.getHardwareAddress();

            System.out.print("MAC地址：");

            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < mac.length; i++) {
                sb.append(String.format("%02X%s", mac[i], (i < mac.length - 1) ? "-" : ""));
            }
            System.out.println(sb.toString());

        } catch (UnknownHostException e) {

            e.printStackTrace();

        } catch (SocketException e) {

            e.printStackTrace();

        }
    }
}

获取Mac地址需要使用Java的NetworkInterface类，示例代码如下：

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

public class MacAddress {
    public static void main(String[] args) {
        try {
            Enumeration<NetworkInterface> networks = NetworkInterface.getNetworkInterfaces();
            while (networks.hasMoreElements()) {
                NetworkInterface network = networks.nextElement();
                byte[] mac = network.getHardwareAddress();
                if (mac != null) {
                    System.out.print("MAC地址：");
                    StringBuilder sb = new StringBuilder();
                    for (int i = 0; i < mac.length; i++) {
                        sb.append(String.format("%02X%s", mac[i], (i < mac.length - 1) ? "-" : ""));
                    }
                    System.out.println(sb.toString());
                }
            }
        } catch (SocketException e) {
            e.printStackTrace();
        }
    }
}