java获取网卡的mac地址

来源：互联网发布：信息的概念是什么知乎编辑：程序博客网时间：2024/05/17 00:12
为了项目的安全，有时候需要得到电脑的唯一码，比如：网卡的mac地址。和大家分享一下，下面是项目中用到的工具类：
import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.net.InetAddress;import java.net.NetworkInterface;public class MacAddressAPI {    /**     * 获取当前操作系统名称. return 操作系统名称 例如:windows xp,linux 等.     */    public static String getOSName() {        return System.getProperty("os.name").toLowerCase();    }    /**     * 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 {            // linux下的命令，一般取eth0作为本地主网卡            process = Runtime.getRuntime().exec("ifconfig eth0");            // 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) {                // 寻找标示字符串[hwaddr]                index = line.toLowerCase().indexOf("hwaddr");                if (index >= 0) {// 找到了                    // 取出mac地址并去除2边空格                    mac = line.substring(index + "hwaddr".length() + 1).trim();                    break;                }            }        }        catch (IOException e) {            System.out.println("unix/linux方式未获取到网卡地址");        }        finally {            try {                if (bufferedReader != null) {                    bufferedReader.close();                }            }            catch (IOException e1) {                e1.printStackTrace();            }            bufferedReader = null;            process = null;        }        return mac;    }    /**     * 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 {            // windows下的命令，显示信息中包含有mac地址信息            process = Runtime.getRuntime().exec("ipconfig /all");            bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()));            String line = null;            int index = -1;            while ((line = bufferedReader.readLine()) != null) {                // 寻找标示字符串[physical                index = line.toLowerCase().indexOf("physical address");                if (index >= 0) {// 找到了                    index = line.indexOf(":");// 寻找":"的位置                    if (index >= 0) {                        // 取出mac地址并去除2边空格                        mac = line.substring(index + 1).trim();                    }                    break;                }            }        }        catch (IOException e) {            System.out.println("widnows方式未获取到网卡地址");        }        finally {            try {                if (bufferedReader != null) {                    bufferedReader.close();                }            }            catch (IOException e1) {                e1.printStackTrace();            }            bufferedReader = null;            process = null;        }        return mac;    }    /**     * windows 7 专用 获取MAC地址     *      * @return     * @throws Exception     */    public static String getWindows7MACAddress() {        StringBuffer sb = new StringBuffer();        try {            // 获取本地IP对象            InetAddress ia = InetAddress.getLocalHost();            // 获得网络接口对象（即网卡），并得到mac地址，mac地址存在于一个byte数组中。            byte[] mac = NetworkInterface.getByInetAddress(ia).getHardwareAddress();            // 下面代码是把mac地址拼装成String            for (int i = 0; i < mac.length; i++) {                // 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);            }        }        catch (Exception ex) {            System.out.println("windows 7方式未获取到网卡地址");        }        return sb.toString();    }    /**     * 获取MAC地址     *      * @param argc     *            运行参数.     * @throws Exception     */    public static String getMACAddress() {        // windows        String mac = getWindowsMACAddress();        // windows7        if (isNull(mac)) {            mac = getWindows7MACAddress();        }        // unix        if (isNull(mac)) {            mac = getUnixMACAddress();        }        if (!isNull(mac)) {            mac = mac.replace("-", "");        }        else {            mac = "ABCDEFGHIJ";        }        return mac.toLowerCase();    }    public static boolean isNull(Object strData) {        if (strData == null || String.valueOf(strData).trim().equals("")) {            return true;        }        return false;    }    public static void main(String[] args) {        System.out.println(getWindows7MACAddress());    }}
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