String 转化成 LocalDateTime类 出现的问题

		 LocalDateTime now = LocalDateTime.now();
        final DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("yyyy-MM-dd w hh:mm:ss");
        final String format = now.format(dateTimeFormatter);
        System.out.println(format);
        final LocalDateTime parse = LocalDateTime.parse(format, dateTimeFormatter);

运行会出现

java.time.DateTimeException: Unable to obtain LocalTime from TemporalAccessor: {MilliOfSecond=0, NanoOfSecond=0, HourOfAmPm=9, MicroOfSecond=0, SecondOfMinute=57, MinuteOfHour=34},ISO resolved to 2020-04-13 of type java.time.format.Parsed

原因是因为时间格式中的小时 hh 采用12小时，反解析时不知道上午还是下午，改成 "yyyy-MM-dd w hh:mm:ss a"或者采用24小时制“yyyy-MM-dd w HH:mm:ss”
tips：年用YYYY格式也会出现异常