我正在尝试编写一个简单的实用工具方法,将一个整数天添加到Joda时间 instant.这是我的第一次尝试. @H_404_2@/** * Adds a number of days specified to the instant in time specified. * * @param instant - the date to be added to * @param numberOfDaysToAdd - the number of days to be added to the instant specified * @return an instant that has been incremented by the number of days specified */ public static Instant addNumberOfDaysToInstant(final Instant instant,final int numberOfDaysToAdd) { Days days = Days.days(numberOfDaysToAdd); Interval interval = new Interval(instant,days); return interval.getEnd().toInstant(); }

这在大多数情况下都可以正常工作,除非您考虑添加天数的示例,这会使您跨越BST / GMT边界.这是一个小例子.

@H_404_2@public class DateAddTest {

/ **
*用于输入和输出的区域
* /
private static final DateTimeZone ZONE = DateTimeZone.forId(“Europe / London”);

@H_404_2@/** * Formatter used to translate Instant objects to & from strings. */ private static final DateTimeFormatter FORMATTER = DateTimeFormat.forPattern(DATE_FORMAT).withZone(ZONE); /** * Date format to be used */ private static final String DATE_FORMAT = "dd/MM/yyyy"; public static void main(String[] args) { DateTime dateTime = FORMATTER.parseDateTime("24/10/2009"); Instant toAdd = dateTime.toInstant(); Instant answer = JodaTimeUtils.addNumberOfDaysToInstant(toAdd,2); System.out.println(answer.toString(FORMATTER)); //25/10/2009 }

}

我认为这个问题是因为间隔没有考虑到它已越过bst边界的事实.任何更好的实现方法的想法将不胜感激.