使用 JodaTime 获取上周的星期一

Get Monday of last week with JodaTime

我需要得到上周的星期一,例如

Today is 28/11/18 (wednesday)

I need get 19/11/18 (monday)

我知道我可以通过

获得本周的星期一
val monday = DateTime().withDayOfWeek(DateTimeConstants.MONDAY)

我明白了!

DateTime().withWeekOfWeekyear(
                 DateTime().weekOfWeekyear-1)
          .withDayOfWeek(DateTimeConstants.MONDAY)

我只需要得到一年中的第几周减去一周就可以了