java怎样获得本地MAC地址

最新推荐文章于 2025-03-02 14:26:04 发布

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最新推荐文章于 2025-03-02 14:26:04 发布

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本文介绍了如何通过Java代码实现获取当前操作系统的名称以及Unix和Windows系统下的网卡MAC地址。

public class UserMac {
    /**
     * 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 {
            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;
    }

    /**
     * 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) {// 找到了
                    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;
    }

//获得本机MAC信息
public static String getUserMac(){
    String os = getOSName();
        if(os.startsWith("windows")){
           //本地是windows
          return getWindowsMACAddress();
        }else{
             //本地是非windows系统一般就是unix
     return getUnixMACAddress();
        }
}

public static void main(String args[]){
System.out.println(getUserMac());
}
}