java获取网卡MAC地址
摘自网络
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | Enumeration<NetworkInterface> ni = NetworkInterface.getNetworkInterfaces(); while(ni.hasMoreElements()){ NetworkInterface netI = ni.nextElement(); byte[] mac = netI.getHardwareAddress(); if(netI.isUp() && netI != null && mac != null && mac.length == 6){ StringBuffer sb = new StringBuffer(); for(byte b : mac){ //与11110000作按位与运算以便读取当前字节高4位 sb.append(Integer.toHexString((b & 240) >> 4)); //与00001111作按位与运算以便读取当前字节低4位 sb.append(Integer.toHexString(b & 15)); sb.append("-"); } sb.deleteCharAt(sb.length()-1); return sb.toString().toUpperCase(); } } |
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