常用时间处理

获取上周时间段

 LocalDate localDate = LocalDate.now();
        localDate = localDate.plusDays(-1);
        LocalDate startTime = localDate.with(DayOfWeek.MONDAY);
        LocalDate endTime = localDate.with(DayOfWeek.SUNDAY);

LocalDate转Date
1）使用ZonedDateTime将LocalDate转换为Instant。
2）使用from（）方法从Instant对象获取Date的实例

 ZoneId zoneId = ZoneId.systemDefault();
        LocalDate localDate = LocalDate.now();
        ZonedDateTime zdt = localDate.atStartOfDay(zoneId);

        Date date = Date.from(zdt.toInstant());