ip地址 long string转化

package com.lhy;

public class IpUtil {

    public static void main(String[] args) {


        //124.160.217.97
        //49.93.207.191
        String ip = "49.93.207.191";

        System.out.println(ipStrToLong(ip));

        long longIp = 828231615;
        System.out.println(ipLongToStr(longIp));

    }


    public static long ipStrToLong(String strIp){

        String[] arrIp = strIp.split("\\.");
        return (Long.parseLong(arrIp[0])<< 24) + (Long.parseLong(arrIp[1])<<16) + (Long.parseLong(arrIp[2])<<8) + (Long.parseLong(arrIp[3]));
    }

    public static String ipLongToStr(long longIP){
        StringBuffer sb = new StringBuffer();
        sb.append(longIP >>> 24)
                .append(".")
                .append((longIP & 0x00FFFFFF) >>> 16)
                .append(".")
                .append((longIP & 0x00FFFF) >>> 8)
                .append(".")
                .append((longIP & 0x00FF));
        return sb.toString();
    }

}