java IP地址互转byte[4]数组

java IP地址互转byte[4]数组
举例IP地址为:192.168.1.24
转为byte[4] : [-64,-88,1,24]

	public static byte[] ipToByteArray(String ip) {
		if (StringUtils.isBlank(ip)) {
			return null;
		}
		String[] split = ip.split("\.");
		byte[] bs = new byte[4];
		for (int i=0; i < split.length; i++) {
			bs[i] = (byte)Integer.parseInt(split[i]);
		}
		return bs;
	}

	public static String byteArrayToIp(byte[] bs) {
		StringBuilder sb = new StringBuilder();
		for (int i=0 ; i < bs.length; i++) {
			if(i != bs.length - 1){
				sb.append(bs[i] & 0xff).append(".");
			}else{
			sb.append(bs[i] & 0xff);
			}
		}
		return sb.toString();
	}