JAVA MAC 比较大小

2个MAC

String mac_1="AAAAAAAAAAAA";

String mac_1="AAAAAAAAAAAB";

方法一：

int a = 0;

a = mac_1.compareTo(mac_2);

如果a>0 则 mac_1的16进制> mac_2的16进制 反之相反。

方法二：

字符转换成Long类型进行比较

Long mac_1_16 = Long.parseLong(mac_1, 16);

Long mac_2_16 = Long.parseLong(mac_1, 16);

mac_1_16和mac_2_16 直接比较即可。

下面是一个网络设备mac地址判断是不是在某一个范围之类的例子：

只展示接口功能，希望有些人可以用的着，就不详细说明了

public boolean checkEnbMacInRange(String macRangeStr, String enbMac) throws IOException {
        boolean inRange = false;
        List<String> licenseRangelist = getMacOuiSectionList(macRangeStr.toUpperCase());
        enbMac.replace(":", "").toUpperCase();
        String macOuiRange = licenseRangelist.get(0);
        String macOuiEnb = enbMac.substring(0, 6);
        logger.info("macOuiRange : " + macOuiRange);
        logger.info("macOuiEnb : " + macOuiEnb);
        Long enbMacSequenceLong = null;
        if (macOuiRange.equals(macOuiEnb)) {
            String enbMacSequenceStr = enbMac.substring(6, enbMac.length());
            enbMacSequenceLong = Long.parseLong(enbMacSequenceStr, 16);

            for (int i = 1; i < licenseRangelist.size(); i++) {
                String rangeStart = licenseRangelist.get(i).substring(0, 6);
                String rangeEnd = licenseRangelist.get(i).substring(6, 12);
                //方法 二
                Long rangeStartLong16 = Long.parseLong(rangeStart, 16);
                Long rangeSEndLong16 = Long.parseLong(rangeEnd, 16);
                logger.info("rangeStart : " + rangeStartLong16);
                logger.info("rangeSEnd : " + rangeSEndLong16);
                logger.info("enbMac : " + enbMacSequenceLong);
                if (rangeStartLong16 <= enbMacSequenceLong && enbMacSequenceLong <= rangeSEndLong16) {
                    logger.info("true===="  );
                    inRange = true;
                    break;
                }
                //方法 一
                int a = 0;
                int b = 0;
                a = enbMacSequenceStr.compareTo(rangeStart);
                b = enbMacSequenceStr.compareTo(rangeEnd);
                logger.info("a = " + a );
                logger.info("b = " + b );
                if (a >= 0 && b <= 0) {
                    logger.info("true===="  );
                    inRange = true;
                    break;
                }
            }
        }
        return inRange;
    }

    /**
     * 拼装mac区间信息提供文件信息展示
     *
     * @param macRangeStr
     * @return
     * @throws IOException
     */
    public String getMacSectionStr(String macRangeStr) throws IOException {
        List<String> licenseRangelist = getMacOuiSectionList(macRangeStr);
        StringBuilder macSection = new StringBuilder();
        String macOuiRange = licenseRangelist.get(0).toUpperCase();
        for (int i = 1; i < licenseRangelist.size(); i++) {
            String rangeStart = licenseRangelist.get(i).substring(0, 6);
            String rangeEnd = licenseRangelist.get(i).substring(6, 12);
            macSection.append(macOuiRange).append(rangeStart);
            macSection.append("-");
            macSection.append(macOuiRange).append(rangeEnd);
            macSection.append(",");
        }
        macSection.deleteCharAt(macSection.length() - 1);
        return macSection.toString();
    }

    /**
     * 获取mac规则中的OUI,和mac区间范围信息
     *
     * @param macRangeStr
     * @return
     * @throws IOException
     */
    public List<String> getMacOuiSectionList(String macRangeStr) throws IOException {
        List<String> licenseRangelist = new ArrayList<String>();
        if (CommMethod.isNotEmpty(macRangeStr)) {
            String MAC_OUI = macRangeStr.substring(0, 6);
            String MACListStr = macRangeStr.substring(9, macRangeStr.length());
            macRangeStr = MAC_OUI + "," + MACListStr;
            String[] macArray = macRangeStr.split(",");
            licenseRangelist = Arrays.asList(macArray);
        }
        return licenseRangelist;
    }