如何使用Java 8库将UTC日期时间转换为另一个时区?

然后将LocalDateTime分区为UTC，然后使用 ZonedDateTime.withZoneSameInstant .DateTimeFormatter formatter = new DateTimeFormatterBuilder() .append(DateTimeFormatter.ISO_LOCAL_DATE) .appendLiteral(' ') .append(DateTimeFormatter.ISO_LOCAL_TIME) .toFormatter();LocalDateTime localDateTime = LocalDateTime.parse("2031-04-25 18:30:00", formatter);ZoneId calcuttaZone = ZoneId.of("Asia/Calcutta");ZonedDateTime calcuttaZonedDateTime = localDateTime.atZone(ZoneOffset.UTC) .withZoneSameInstant(calcuttaZone);final Timestamp rawDateTime = Timestamp.valueOf("2031-04-25 18:30:00");final ZoneId zoneId = ZoneId.of("Asia/Calcutta");final ZonedDateTime zonedDateTime = ZonedDateTime.ofInstant( Instant.ofEpochMilli(rawDateTime.getTime()), zoneId); // here we are getting output as 2031-04-25T18:30+05:30[Asia/Calcutta]final ZonedDateTime zonedDateTime1 = ZonedDateTime.of(rawDateTime.toLocalDateTime(), zoneId);// here we are getting output as 2031-04-25T18:30+05:30[Asia/Calcutta]But I want to get the converted date time as 2031-04-26 00:00:00+5:30 as my timestamp value is in the UTC Timezone.Please help. 解决方案 First, you should not use Timestamp. You can use DateTimeFormatter to parse into a LocalDateTime.You then zone that LocalDateTime to UTC before converting to the Calcutta zone with ZonedDateTime.withZoneSameInstant.DateTimeFormatter formatter = new DateTimeFormatterBuilder() .append(DateTimeFormatter.ISO_LOCAL_DATE) .appendLiteral(' ') .append(DateTimeFormatter.ISO_LOCAL_TIME) .toFormatter();LocalDateTime localDateTime = LocalDateTime.parse("2031-04-25 18:30:00", formatter);ZoneId calcuttaZone = ZoneId.of("Asia/Calcutta");ZonedDateTime calcuttaZonedDateTime = localDateTime.atZone(ZoneOffset.UTC) .withZoneSameInstant(calcuttaZone); 这篇关于如何使用Java 8库将UTC日期时间转换为另一个时区?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！