如何获取本地化的日期模式字符串?

2022-01-11 00:00:00 datetime internationalization localization java

使用 DateFormat，即我可以将当前日期格式化为短本地化日期，如下所示:

It is quite easy to format and parse Java Date (or Calendar) classes using instance of DateFormat, i.e. I could format current date into short localize date like this:

DateFormat formatter = DateFormat.getDateInstance(DateFormat.SHORT, Locale.getDefault()); String today = formatter.format(new Date());

我的问题是:我需要获取这个本地化的模式字符串(即像 "MM/dd/yy" 之类的东西).这应该是一项微不足道的任务，但我就是找不到提供者...

My problem is: I need to obtain this localized pattern string (i.e. something like "MM/dd/yy"). This should be a trivial task, but I just couldn't find the provider...

推荐答案

For SimpleDateFormat，你调用 toLocalizedPattern()

对于 Java 8 用户:

For Java 8 users:

Java 8 日期时间 API 类似于 Joda-time.为了获得本地化模式，我们可以使用类DateTimeFormatter

The Java 8 Date Time API is similar to Joda-time. To gain a localized pattern we can use class DateTimeFormatter

DateTimeFormatter.ofLocalizedDate(FormatStyle.MEDIUM);

请注意，当您在 LocalDate 上调用 toString() 时，您将获得 ISO-8601 格式的日期

Note that when you call toString() on LocalDate, you will get date in format ISO-8601

请注意，Java 8 中的日期时间 API 受到 Joda Time 的启发，大多数解决方案都可以基于与时间相关的问题.

Note that Date Time API in Java 8 is inspired by Joda Time and most solution can be based on questions related to time.

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