推断给定的IP地址是否是内网IP

/**
 * 推断给定的IP地址是否是内网IP
 *
 * @author GaoHuanJie
 */
public class Test{

	public boolean isInnerIP(String ipAddress){/*推断是否是内网IP*/
	    boolean isInnerIp = false;//默认给定IP不是内网IP
	    long ipNum = getIpNum(ipAddress);
	    /**
	     * 私有IP：A类  10.0.0.0    -10.255.255.255
	     *       B类  172.16.0.0  -172.31.255.255
	     *       C类  192.168.0.0 -192.168.255.255
	     *       D类   127.0.0.0   -127.255.255.255(环回地址)
	     **/
	    long aBegin = getIpNum("10.0.0.0");
	    long aEnd = getIpNum("10.255.255.255");
	    long bBegin = getIpNum("172.16.0.0");
	    long bEnd = getIpNum("172.31.255.255");
	    long cBegin = getIpNum("192.168.0.0");
	    long cEnd = getIpNum("192.168.255.255");
	    long dBegin = getIpNum("127.0.0.0");
	    long dEnd = getIpNum("127.255.255.255");
	    isInnerIp = isInner(ipNum,aBegin,aEnd) || isInner(ipNum,bBegin,bEnd) || isInner(ipNum,cBegin,cEnd) || isInner(ipNum,dBegin,dEnd);
	    return isInnerIp;
	}

	private long getIpNum(String ipAddress) {/*获取IP数*/
		String [] ip = ipAddress.split("\\.");
		long a = Integer.parseInt(ip[0]);
		long b = Integer.parseInt(ip[1]);
		long c = Integer.parseInt(ip[2]);
		long d = Integer.parseInt(ip[3]);
		long ipNum = a * 256 * 256 * 256 + b * 256 * 256 + c * 256 + d;
		return ipNum;
	}   

	private boolean isInner(long userIp,long begin,long end){
		return (userIp>=begin) && (userIp<=end);
	} 

	public static void main(String[] args) {
		if (new Test().isInnerIP("22.8.129.60")) {//172.16.0.119
			System.out.println("该IP地址为内网IP！

");
		} else {
			System.out.println("该IP地址为外网IP！");
		}
	}
}