java实现ip与int的相互转换

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    public void ip2int(){
        String ip = "1.255.255.25";
        String[] split = ip.split("\.");
        int result = 0;
        for (int i = 0; i < split.length; i++) {
            result = result | (Integer.parseInt(split[i]) << (8*i));
        }
        System.out.println(result);
    }

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	public void int2ip(int ip){
        String[] res = new String[4];
        for (int i = 0; i < 4; i++) {
            res[i] = String.valueOf((ip & (255 << (i * 8))) >>> (i * 8));
        }
        System.out.println(String.join(".",res));
    }