java.time.LocalDate.getDayOfWeek()到java.util.Calendar.get(DAY_OF_WEEK)

问题描述

我正在使用最近的java.time包，尤其是 LocalDate的星期几获取.

I am using the recent java.time package and in particular the day of week getter of LocalDate.

我得到一个很好的 DayOfWeek 枚举调用LocalDate.getDayOfWeek()时.

I get a nice DayOfWeek enum when calling LocalDate.getDayOfWeek().

但是，我的代码应该与使用日历工作日的整数值(即从代码Calendar.get(DAY_OF_WEEK)获得的)的应用程序的某些较早部分兼容.

However, my code should be compatible with some older part of the application that uses the integer value of a Calendar weekday, i.e. obtained from the code Calendar.get(DAY_OF_WEEK).

很显然，在DayOfWeek枚举中， SUNDAY值是7 ，在日历DAY_OF_WEEK"字段中， SUNDAY值为1 .

Obviously, in the DayOfWeek enum, SUNDAY value is 7, and in Calendar DAY_OF_WEEK field, SUNDAY value is 1.

那么，我必须选择哪种才能将其转换为另一种?我应该将java.util.Date中的LocalDate转换为Calendar吗?

So, what choices do I have to convert one into another? Should I convert the LocalDate in java.util.Date and then into a Calendar?

推荐答案

WeekFields 类(用于 LocalDate.get() ):

int sundayBasedDow = date.get(WeekFields.SUNDAY_START.dayOfWeek());

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