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  • 随机生成MAC地址和IP地址

    随机生成MAC

                //MAC地址分隔符
           private static String SEPARATOR_OF_MAC = "-";
           Random random = new Random();
            //mac数据 String[] macs = { String.format("%02x", 0x52), String.format("%02x", 0x54), String.format("%02x", 0x00), String.format("%02x", random.nextInt(0xff)), String.format("%02x", random.nextInt(0xff)), String.format("%02x", random.nextInt(0xff)) }; String mac = String.join(SEPARATOR_OF_MAC, macs).toUpperCase();

    随机生成IP

        //IP使用数据
        private static final int[][] range = {
                {607649792, 608174079}, // 36.56.0.0-36.63.255.255
                {1038614528, 1039007743}, // 61.232.0.0-61.237.255.255
                {1783627776, 1784676351}, // 106.80.0.0-106.95.255.255
                {2035023872, 2035154943}, // 121.76.0.0-121.77.255.255
                {2078801920, 2079064063}, // 123.232.0.0-123.235.255.255
                {-1950089216, -1948778497}, // 139.196.0.0-139.215.255.255
                {-1425539072, -1425014785}, // 171.8.0.0-171.15.255.255
                {-1236271104, -1235419137}, // 182.80.0.0-182.92.255.255
                {-770113536, -768606209}, // 210.25.0.0-210.47.255.255
                {-569376768, -564133889}, // 222.16.0.0-222.95.255.255
        };
      //实际代码 Random random
    = new Random(); String ip = num2ip(range[index][0] + new Random().nextInt(range[index][1] - range[index][0]));   /** * IP生成工具方法 */ public static String num2ip(int ip) { int[] b = new int[4]; String ipStr = ""; b[0] = (int) ((ip >> 24) & 0xff); b[1] = (int) ((ip >> 16) & 0xff); b[2] = (int) ((ip >> 8) & 0xff); b[3] = (int) (ip & 0xff); ipStr = Integer.toString(b[0]) + "." + Integer.toString(b[1]) + "." + Integer.toString(b[2]) + "." + Integer.toString(b[3]); return ipStr; }
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  • 原文地址:https://www.cnblogs.com/sheng-se/p/14307756.html
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