Java获取本机IP地址和MAC地址

Java获取本机IP地址和MAC地址

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.UnknownHostException;
import java.util.Date;
import java.util.concurrent.ThreadLocalRandom;

public class Test {
	public static void main(String[] args) {

		InetAddress inet;
		try {
			inet = InetAddress.getLocalHost();
			System.out.println(inet);
			System.out.println(inet.getHostName()); // 名称
			System.out.println(inet.getHostAddress()); // 只获得IP
			byte[] mac = NetworkInterface.getByInetAddress(inet).getHardwareAddress();
			// 下面代码是把mac地址拼装成String
			StringBuilder sb = new StringBuilder();
			for (int i = 0; i < mac.length; i++) {
				if (i != 0) {
					sb.append("-");
				}
				// mac[i] & 0xFF 是为了把byte转化为正整数
				String s = Integer.toHexString(mac[i] & 0xFF);
				sb.append(s.length() == 1 ? 0 + s : s);
			}
			// 把字符串所有小写字母改为大写成为正规的mac地址并返回
			String macAddress = sb.toString().trim().toUpperCase();
			System.out.println(macAddress); // 只获得IP
		} catch (UnknownHostException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (SocketException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

		getMAC();
	}

	public static String getMAC() {
		String mac = null;
		try {
			Process pro = Runtime.getRuntime().exec("cmd.exe /c ipconfig/all");

			InputStream is = pro.getInputStream();
			BufferedReader br = new BufferedReader(new InputStreamReader(is, "GBK"));
			String message = br.readLine();

			int index = -1;
			while (message != null) {
				if ((index = message.indexOf("物理地址")) > 0) {
					mac = message.substring(index + 32).trim();
					break;
				}
				message = br.readLine();
			}
			System.out.println(mac);
			br.close();
			pro.destroy();
		} catch (IOException e) {
			System.out.println("Can't get mac address!");
			return null;
		}
		return mac;
	}

	private static String decodeSpecialWord(String word) {
		String result = "";
		result = word.replace("&", "\\u0026");
		result = result.replace("<", "\\u003C");
		result = result.replace(">", "\\u003E");
		result = result.replace("\"", "\\u0022");
		result = result.replace("'", "\\u0027");
		return result;
	}

	/**
	 * @param max
	 * @return
	 */
	private static int randomData(int max) {
		System.out.println("randomData Start" + new Date(System.currentTimeMillis()));
		int s = ThreadLocalRandom.current().nextInt(3);
		System.out.println(s + "   randomData ENd" + new Date(System.currentTimeMillis()));
		return s;
	}

	/**
	 * 
	 * @param bString
	 * @return 转换为16进制字符串
	 */
	private static String binaryString2hexString(String bString) {
		if (bString == null || bString.equals("") || bString.length() % 8 != 0)
			return null;
		StringBuffer tmp = new StringBuffer();
		int iTmp = 0;
		for (int i = 0; i < bString.length(); i += 4) {
			iTmp = 0;
			for (int j = 0; j < 4; j++) {
				iTmp += Integer.parseInt(bString.substring(i + j, i + j + 1)) << (4 - j - 1);
			}
			tmp.append(Integer.toHexString(iTmp));
		}
		return tmp.toString();
	}

	/**
	 * 
	 * @param hexString
	 * @return 转换为二进制字符串
	 */
	private static String hexString2binaryString(String hexString) {
		if (hexString == null || hexString.length() % 2 != 0)
			return null;
		String bString = "", tmp;
		for (int i = 0; i < hexString.length(); i++) {
			tmp = "0000" + Integer.toBinaryString(Integer.parseInt(hexString.substring(i, i + 1), 16));
			bString += tmp.substring(tmp.length() - 4);
		}
		return bString;
	}

	/**
	 * 10进制转换为16进制字符串
	 * 
	 * @param time
	 * @return
	 */
	private static String getHexString(int time) {
		String hexTime = Integer.toHexString(time);
		if (hexTime.length() == 1) {
			hexTime = "0" + hexTime;
		}
		return hexTime;
	}

	/**
	 * 用于在DB[int, 分钟数]<-->view[String HH:MM]间的转换
	 * 
	 * @param time
	 *            格式为 "hh:mm"
	 * @return
	 */
	private static int getTimeFormat(String time) {
		int hour = 0;
		int min = 0;
		hour = Integer.parseInt(time.substring(0, 2));
		min = Integer.parseInt(time.substring(3, 5));
		return hour * 6 + min / 10;
	}

}