如何获取“今天”的日期/时间范围在Java中使用Joda日期/时间库？

问题描述

假设这是您如何获得的当前时间：

  DateTime now = new DateTime（）; 
  

如何计算变量的值 dateTimeAtStartOfToday 和 dateTimeAtEndOfToday ？

我想要做的是生成一些SQL来查找所有事务发生在 startOfToday 和 endOfToday 之间。

解决方案

我会使用：

  LocalDate today = now.toLocalDate（）; 
 LocalDate tomorrow = today.plusDays（1）; 
 
 DateTime startOfToday = today.toDateTimeAtStartOfDay（now.getZone（））; 
 DateTime startOfTomorrow = tomorrow.toDateTimeAtStartOfDay（now.getZone（））; 
  

然后检查 startOfToday< = time< startOfTomorrow 在任何特定的时间。

当然，它部分取决于数据库中存储的内容以及您感兴趣的时区in。

Assuming this is how you get the current time in Joda time:

DateTime now = new DateTime();

How do you calculate values for the variables dateTimeAtStartOfToday and dateTimeAtEndOfToday?

What I'm trying to do is generate some SQL to do a lookup of all transactions that have occurred between the startOfToday and endOfToday.

解决方案

I would use:

LocalDate today = now.toLocalDate();
LocalDate tomorrow = today.plusDays(1);

DateTime startOfToday = today.toDateTimeAtStartOfDay(now.getZone());
DateTime startOfTomorrow = tomorrow.toDateTimeAtStartOfDay(now.getZone());

Then check if startOfToday <= time < startOfTomorrow for any particular time.

Of course, it partly depends on exactly what's stored in the database - and what time zone you're interested in.

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