将ip转化成10进制数，10进制数转换成ip

	/**
	 *IPUtil 
	 *getIp10,将xxx.xxx.xx.x类型的IP转换成10进制的long型串
	*/
	public static long getIp10(String ip) {   
        long ip10 = 0;   
        String[] ss = ip.trim().split("\\.");   
        for (int i = 0; i < 4; i++) {   
            ip10 += Math.pow(256, 3 - i) * Integer.parseInt(ss[i]);   
        }   
  
        return ip10;   
    }
	
	/**
	 *IPUtil 
	 *getIp,将long型串转换成xxx.xxx.xx.x型的IP
	*/
	public static String getIp(long ip10) {   
	        String ip = "";   
	        long temp = 0;   
	        for (int i = 3; i >= 0; i--) {   
	            temp = ip10 / (long) Math.pow(256, i) % 256;   
	            if (i == 3) {   
	                ip = ip + temp;   
	            } else {   
	                ip = ip + "." + temp;   
	            }   
	        }   
	        return ip;   
	 }