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！");
		}
	}
}