获取Java上日期的上周日期范围

Question

假设我有一个日期2013年6月20日

我如何获得上周的日期范围，即6月9日至6月15日。

此外，如果日期是2013年6月2日

范围应为26月1日至6月

Answer 1

这是基于Java Calendar的解决方案

    Date date = new Date();
    Calendar c = Calendar.getInstance();
    c.setTime(date);
    int i = c.get(Calendar.DAY_OF_WEEK) - c.getFirstDayOfWeek();
    c.add(Calendar.DATE, -i - 7);
    Date start = c.getTime();
    c.add(Calendar.DATE, 6);
    Date end = c.getTime();
    System.out.println(start + " - " + end);

输出

Mon Jun 10 13:22:01 EEST 2013 - Sun Jun 16 13:22:01 EEST 2013

它是本地化的，在我的Locale周从星期一开始

Answer 2

Java 8版本

final ZonedDateTime input = ZonedDateTime.now();
System.out.println(input);
final ZonedDateTime startOfLastWeek = input.minusWeeks(1).with(DayOfWeek.MONDAY);
System.out.println(startOfLastWeek);
final ZonedDateTime endOfLastWeek = startOfLastWeek.plusDays(6);
System.out.println(endOfLastWeek);

Answer 3

您可以使用JodaTime获得更清晰的解决方案。使用JodaTime，您可以执行以下操作：

final DateTime input = new DateTime();
System.out.println(input);
final DateMidnight startOfLastWeek = 
           new DateMidnight(input.minusWeeks(1).withDayOfWeek(DateTimeConstants.MONDAY));
System.out.println(startOfLastWeek);
final DateMidnight endOfLastWeek = startOfLastWeek.plusDays(6);
System.out.println(endOfLastWeek);

Answer 4

试试这个

public static void main(String[] args)
    {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(new Date());
        System.out.println("First Day : " + SampleDateLimit.firstDayOfLastWeek(calendar).getTime());
        System.out.println("Last Day : " + SampleDateLimit.lastDayOfLastWeek(calendar).getTime());
    }

    public static Calendar firstDayOfLastWeek(Calendar c)
    {
        c = (Calendar) c.clone();
        // last week
        c.add(Calendar.WEEK_OF_YEAR, -1);
        // first day
        c.set(Calendar.DAY_OF_WEEK, c.getFirstDayOfWeek());
        return c;
    }

    public static Calendar lastDayOfLastWeek(Calendar c)
    {
        c = (Calendar) c.clone();
        // first day of this week
        c.set(Calendar.DAY_OF_WEEK, c.getFirstDayOfWeek());
        // last day of previous week
        c.add(Calendar.DAY_OF_MONTH, -1);
        return c;
    }