import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

/**

* 在java查询中获取  MACA 地址

*/

public class GetMACAddress {

public static void main(String[] args) {

System.out.println(getWindowsMACAddress());

System.out.println(getUnixMACAddress());

}

/**

* 获取widnows网卡的mac地址

* @return mac地址

*/

public static String getWindowsMACAddress() {

String mac = null;

BufferedReader bufferedReader = null;

Process process = null;

try {

process = Runtime.getRuntime().exec("ipconfig /all");// windows下的命令，显示信息中包含有mac地址信息

bufferedReader = new BufferedReader(new InputStreamReader(

process.getInputStream()));

String line = null;

int index = -1;

while ((line = bufferedReader.readLine()) != null) {

index = line.toLowerCase().indexOf("physical address");// 寻找标示字符串[physical address]

if (index >= 0) {

index = line.indexOf(":");// 寻找":"的位置

if (index >= 0) {

mac = line.substring(index + 1).trim();//  取出mac地址并去除2边空格

}

break;

}

}

} catch (IOException e) {

e.printStackTrace();

} finally {

try {

if (bufferedReader != null) {

bufferedReader.close();

}

} catch (IOException e1) {

e1.printStackTrace();

}

bufferedReader = null;

process = null;

}

return mac;

}

/**

* 获取unix网卡的mac地址

* 非windows的系统默认调用本方法获取.如果有特殊系统请继续扩充新的取mac地址方法.

* @return mac地址

*/

public static String getUnixMACAddress() {

String mac = null;

BufferedReader bufferedReader = null;

Process process = null;

try {

process = Runtime.getRuntime().exec("ifconfig eth0");// linux下的命令，一般取eth0作为本地主网卡 显示信息中包含有mac地址信息

bufferedReader = new BufferedReader(new InputStreamReader(

process.getInputStream()));

String line = null;

int index = -1;

while ((line = bufferedReader.readLine()) != null) {

index = line.toLowerCase().indexOf("hwaddr");// 寻找标示字符串[hwaddr]

if (index >= 0) {// 找到了

mac = line.substring(index + "hwaddr".length() + 1).trim();//  取出mac地址并去除2边空格

break;

}

}

} catch (IOException e) {

e.printStackTrace();

} finally {

try {

if (bufferedReader != null) {

bufferedReader.close();

}

} catch (IOException e1) {

e1.printStackTrace();

}

bufferedReader = null;

process = null;

}

return mac;

}

}