java匹配IP正则表达式

/**
	 * 判断是否为合法IP
	 * @return the ip
	 */
	public boolean isboolIp(String ipAddress)
	{
        String ip = "([1-9]|[1-9]//d|1//d{2}|2[0-4]//d|25[0-5])(//.(//d|[1-9]//d|1//d{2}|2[0-4]//d|25[0-5])){3}"; 
        Pattern pattern = Pattern.compile(ip); 
        Matcher matcher = pattern.matcher(ipAddress); 
        return matcher.matches(); 
	}