Java 如何将 ZonedDateTime 格式化为字符串？
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How to format a ZonedDateTime to a String?
提问by mFeinstein
I want to convert a ZonedDateTimeto a Stringin the format of ("dd/MM/yyyy - hh:mm"). I know this is possible in Joda-Time other types, just using their toString("dd/MM/yyyy - hh:mm")....But this doesn't work with ZonedDateTime.toString().
我想将转换ZonedDateTime为String以格式("dd/MM/yyyy - hh:mm")。我知道这在 Joda-Time 其他类型中是可能的，只需使用它们的toString("dd/MM/yyyy - hh:mm")....但这不适用于ZonedDateTime.toString().
How can I format a ZonedDateTimeto a String?
如何ZonedDateTime将 a格式化为 a String？
EDIT:
编辑：
I tried to print the time in another timezone and the result appears to be the same always:
我试图在另一个时区打印时间，结果似乎总是一样的：
ZonedDateTime date = ZonedDateTime.now();
ZoneId la = ZoneId.of("America/Los_Angeles");
ZonedDateTime date2 = date.of(date.toLocalDateTime(), la);
// 24/02/2017 - 04:53
System.out.println(DateTimeFormatter.ofPattern("dd/MM/yyyy - hh:mm").format(date));
// same result as the previous one
// 24/02/2017 - 04:53
System.out.println(DateTimeFormatter.ofPattern("dd/MM/yyyy - hh:mm").format(date2));
And I am not in the same timezone as Los Angeles.
而且我和洛杉矶不在同一个时区。
EDIT 2:
编辑2：
Found how to change the timezones:
找到了如何更改时区：
// Change this:
ZonedDateTime date2 = date.of(date.toLocalDateTime(), la); // incorrect!
// To this:
ZonedDateTime date2 = date.withZoneSameInstant(la);
采纳答案by reos
You can use java.time.format.DateTimeFormatter. https://docs.oracle.com/javase/8/docs/api/java/time/format/DateTimeFormatter.html
您可以使用 java.time.format.DateTimeFormatter。 https://docs.oracle.com/javase/8/docs/api/java/time/format/DateTimeFormatter.html
Here there is an example
这里有一个例子
ZonedDateTime date = ZonedDateTime.now();
System.out.println(DateTimeFormatter.ofPattern("dd/MM/yyyy - hh:mm").format(date));
回答by Tony Fraser
Many thanks for above. Here it is in scala where localDateTime.now always Zulu/UTC time.
非常感谢以上。这是在 Scala 中的 localDateTime.now 总是祖鲁语/UTC 时间。
import java.time.format.DateTimeFormatter
import java.time.LocalDateTime
import java.time.ZoneId
val ny = ZoneId.of("America/New_York")
val utc = ZoneId.of("UTC")
val dateTime = LocalDateTime.now.atZone(utc)
val nyTime = DateTimeFormatter.
ofPattern("yyyy-MMM-dd HH:mm z").
format(dateTime.withZoneSameInstant(ny))
