获取IP、mac等信息

　　主要是通过NetworkInterface类实现。现在一个机器，一般会有多个IP，多个网卡。

 

　　其次，Runtime.getRuntime().exec可以用来调用系统命令。

 

　　下面贴个代码：

package networkInterface;



import java.io.BufferedReader;

import java.io.InputStreamReader;

import java.net.InetAddress;

import java.net.NetworkInterface;

import java.util.Enumeration;



/**

 * 获取ip & mac 地址

 * 

 * <br>===============</br> <br>

 * 

 * @author [email protected]</br>

 * @createDate 2015年7月7日</br> 

 * <br>================</br>

 */

public class NetworkInterfaceTest {



    private static void windowsCommand() throws Exception {

        String command = "ipconfig /all";

        Process p = Runtime.getRuntime().exec(command);



        BufferedReader inn = new BufferedReader(new InputStreamReader(p.getInputStream()));

        // Pattern pattern = Pattern.compile(".*Physical Addres.*: (.*)");



        StringBuilder sb = new StringBuilder();

        while (true) {

            String line = inn.readLine();

            System.out.println(line);

            if (line == null) {

                break;

            }

            sb.append(line+"\n");



            /*

             * Matcher mm = pattern.matcher(line); if (mm.matches()) { System.out.println(mm.group(1)); }

             */

        }

        System.out.println(sb.toString());

    }



    private static void ip() throws Exception {

        InetAddress ip = InetAddress.getLocalHost();

        System.out.println("Current IP address : " + ip.getHostAddress());

    }



    private static void interfaces() throws Exception {

        Enumeration<NetworkInterface> networks = NetworkInterface.getNetworkInterfaces();

        while (networks.hasMoreElements()) {

            NetworkInterface network = networks.nextElement();

            byte[] mac = network.getHardwareAddress();



            if (mac != null) {

                System.out.print("Current MAC address : ");



                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());

            }

        }

    }



    public static void main(String[] args) throws Exception {

        ip();

        interfaces();



        windowsCommand();

    }

}