iputil2

/**
     * excludeAType=true ���Թ���A���127��ͷ��IP��ַ�����ⵥ��A06D18683
     * @param strIp
     * @param excludeAType
     * @return
     */
    public static long ipToLong(String strIp, boolean excludeAType)
    {
        if (!ipValid(strIp, excludeAType))
        {
            return 0;
        }
        int result = 0;
        try
        {
            InetAddress addr = InetAddress.getByName(strIp);
            byte[] bas = addr.getAddress();
            result |= ((short) (bas[0] & 0x00ff) << 24);
            result |= ((short) (bas[1] & 0x00ff) << 16);
            result |= ((short) (bas[2] & 0x00ff) <<;
            result |= (short) (bas[3] & 0x00ff);

            long ret = result >>> 1;
            ret = ret << 1;
            ret |= (result << 31) >>> 31;

            return ret;
        }
        catch (UnknownHostException e)
        {
            logger.error(e.getMessage(), e);
        }
        return 0L;
    }

    public static String longToIP(Long longIp)
    {
        // StringBuffer sbIp = new StringBuffer();
        // sbIp.append(longIp >>> 24);
        // sbIp.append(".");
        // sbIp.append((longIp & 0x00FFFFFF) >>> 16);
        // sbIp.append(".");
        // sbIp.append((longIp & 0x0000FFFF) >>>;
        // sbIp.append(".");
        // sbIp.append(longIp & 0x000000FF);
        // return sbIp.toString();
        if (longIp == null || longIp <= 0)
        {
            return "";
        }
        ByteBuffer buf = ByteBuffer.allocate(4);
        int ret = (int) (longIp & 0x00000000ffffffff);
        buf.putInt(ret);
        InetAddress addr = null;
        String ipAddress = "";
        try
        {
            addr = InetAddress.getByAddress(buf.array());
            ipAddress = addr.getHostAddress();
        }
        catch (UnknownHostException e)
        {
            logger.error(e.getMessage(), e);
        }
        return ipAddress;
    }

    /**
     * ������ķ�����ͬ��ֻ�Dz���ΪLong
     * @param ip
     * @return
     */
    public static boolean ipValid(Long ip)
    {
        String ips = longToIpStd(ip);
        return ipValid(ips);
    }