格式化DateTime时如何应用时区？ [英] How to apply timezone when formatting DateTime?

问题描述

我有一个日期时间作为 2011-01-11 01:51:10 ，时区为 America / Los_Angeles

I have a datetime as 2011-01-11 01:51:10 and timezone as America/Los_Angeles

我想获得此值的本地化日期时间。这就是我所做的。

I want to get a localised date time for this value. This is what I do

val formatter1: DateTimeFormatter = DateTimeFormatter.ofPattern("y-M-d H:m:s");
val m1: LocalDateTime = LocalDateTime.parse("2011-01-11 01:51:10", formatter1);
println("DateTime: " + m1.atZone(ZoneId.of("America/Los_Angeles")))

我获得的值是

DateTime: 2011-01-11T01:51:10-08:00[America/Los_Angeles]

如何将其转换为本地化的datetime与 -08：00 偏移应用于它，没有 [America / Los_Angeles] ？

How do I convert it into localized datetime with -08:00 offset applied to it and no [America/Los_Angeles]?

推荐答案

您首先必须指定您解析的时间在哪个时区，然后指定另一个转换为。

You first have to specify which timezone that the time which you have parsed is in. Then specify an other one to convert into.

DateTimeFormatter formatter1 = DateTimeFormatter.ofPattern("y-M-d H:m:s");
LocalDateTime m1 = LocalDateTime.parse("2011-01-11 01:51:10", formatter1);
ZonedDateTime z1 = m1.atZone(ZoneId.of("UTC"));
ZonedDateTime z2 = z1.withZoneSameInstant(ZoneId.of("America/Los_Angeles"));

System.out.println(z2.format(DateTimeFormatter.ISO_LOCAL_DATE_TIME));

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