code: public static int timeToSecond(String timeStr) {
  		if (StrUtil.isEmpty(timeStr)) {
  			return 0;
  		}
  
  		final List<String> hms = StrUtil.splitTrim(timeStr, StrUtil.C_COLON, 3);
  		int lastIndex = hms.size() - 1;
  
  		int result = 0;
  		for (int i = lastIndex; i >= 0; i--) {
  			result += Integer.parseInt(hms.get(i)) * Math.pow(60, (lastIndex - i));
  		}
  		return result;
  	}
docs: HH:mm:ss 时间格式字符串转为秒数<br>
  参考：https://github.com/iceroot
  
  @param timeStr 字符串时分秒(HH:mm:ss)格式
  @return 时分秒转换后的秒数
  @since 3.1.2