java ipToLong longToString

package com.lhy.algorithm;

public class IP2Long {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
		String ip = "218.26.210.6";
		
		System.out.println(ipToLong(ip));
		
		long t = ipToLong(ip);
		
		System.out.println(longToString(t));

	}
	
	public static long ipToLong(String ip){
		long ips = 0l;
		String[] ipArr = ip.split("\\.");
		
		for(int i=0; i<4; i++){
			ips = ips<<8|Integer.parseInt(ipArr[i]);
		}
		
		return ips;
	}
	
	public static String longToString(long number){
		String ip="";
		
		for(int i=3;i>=0;i--){
			long tmp = number>>(8*i);
			ip+=String.valueOf((tmp & 0xff));
			if(i!=0){
				ip+=".";
			}
		}
		return ip;
	}

}

 输出：3659190790

            218.26.210.6