有没有办法将两种不同的dateTime格式解析为LocalDateTime或Java中的Instant? [英] Is there a way to parse two different dateTime formats into LocalDateTime or Instant in java?

问题描述

对于给定的字符串，我们如何验证两种格式"yyyy-MM-dd"和"yyyy-MM-dd'T'HH:mm:SSX"，可以是两种格式中的任何一种并将其转换为即时还是LocalDateTime?

How can we validate two formats "yyyy-MM-dd" and "yyyy-MM-dd'T'HH:mm:SSX" for a given string which can be of any of the two formats and either convert it to Instant or LocalDateTime?

LocalDateTime dateTime;
    DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd[\'T\'HH:mm:SSX]");
    TemporalAccessor temporalAccessor = formatter.parseBest(now, LocalDateTime::from, LocalDate::from);
    if (temporalAccessor instanceof LocalDateTime) {
      dateTime = (LocalDateTime)temporalAccessor;
    } else {
      dateTime = ((LocalDate)temporalAccessor).atStartOfDay();
    }

使用上述格式时，始终会解析为LocalDate并切分时间部分.

When using the above format it's always resolving to LocalDate and chopping the time part.

推荐答案

将格式更改为"yyyy-MM-dd [\'T \'HH:mm:ssX]"已解决.

Changing the format to "yyyy-MM-dd[\'T\'HH:mm:ssX]" fixed it.

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