如何获取基于语言环境的带时区的数据时间模式？ [英] How to get the data time pattern with time zone based on the locale?

问题描述

以下代码是我已经拥有的代码：

The following code is what I already have:

DateFormat f = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT, Java_Locale);
SimpleDateFormat sf = (SimpleDateFormat) f;
String pattern = sf.toPattern();

使用上面的代码，我可以根据语言环境获得正确的日期/时间模式。例如：对于美国英语， M / d / yy h：mm a，对于中文， yy-Md ah：mm。

With the above code, I am able to get the PROPER date/time pattern based on the locale. For example: "M/d/yy h:mm a" for US English, "yy-M-d ah:mm" for Chinese.

但是，此模式不有时区信息。我希望能够将时区添加到模式中。例如，对于英语， M / d / yy h：mm a z，但我不想为其他语言环境指定模式。我希望根据给定的语言环境获得带有时区的正确模式，其他语言环境类似于 M / d / yy h：mm az。

However, this pattern does not have the time zone information. I hope to be able to add time zone into the pattern. For example, "M/d/yy h:mm a z" for English, but I don't want to specify the pattern for other locales. I hope to get the proper pattern with time zone based on a given locale, something similar to "M/d/yy h:mm a z" for other locales.

I使用Java 8。

I use Java 8.

推荐答案

DateFormat f = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.FULL, Java_Locale);

Full 时间样式包括时区。

The FULL time style includes the time zone. This will make the time more complex, though.

注意：仅在模式字符串中添加 z 不会总是准确的。例如，阿拉伯语语言环境将时区置于日期和时间之间：

Note: just adding a z to the pattern string is not always accurate. For instance, Arabic language locales put the time zone between the date and time:

Locale Java_Locale = Locale.forLanguageTag("ar");
DateFormat f = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.FULL, Java_Locale);
SimpleDateFormat sf = (SimpleDateFormat) f;
String pattern = sf.toPattern(); // "dd/MM/yy z hh:mm:ss a"

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