Java获取本机的mac地址

 public String getLocalMac() {
        try {
            InetAddress inetAddress = InetAddress.getLocalHost();
            //获取网卡，获取地址
            byte[] mac = NetworkInterface.getByInetAddress(inetAddress).getHardwareAddress();
            StringBuffer sb = new StringBuffer();
            for (int i = 0; i < mac.length; i++) {
                if (i != 0) {
                    sb.append("-");
                }
                //字节转换为整数
                int temp = mac[i] & 0xff;
                String str = Integer.toHexString(temp);
                if (str.length() == 1) {
                    sb.append("0" + str);
                } else {
                    sb.append(str);
                }
            }
            return sb.toString();
        } catch (Exception exception) {
        }
        return null;
    }

Java获取本地ip地址

 public String getLocalName() throws UnknownHostException {
        String ip="";
        try {
            InetAddress addr = InetAddress.getLocalHost();
            ip = addr.getHostAddress();
        }catch (Exception e){

        }
        return ip;
    }