datetime - Java 8 LocalDateTime ZonedDateTime 无法解析带时区的日期

Question

我正在尝试使用 Java 8 新日期模式而不是 Joda，但我遇到了以下问题:

两个都

ZonedDateTime.parse("02/05/16 11:51.12.083 +04:30", DateTimeFormatter.ofPattern("dd/MM/yy HH:mm.ss.SSS Z"))

和

LocalDateTime.parse("02/05/16 11:51.12.083 +04:30", DateTimeFormatter.ofPattern("dd/MM/yy HH:mm.ss.SSS Z"))

抛出“java.time.format.DateTimeParseException”异常。
尽管

org.joda.time.DateTime.parse("02/05/16 11:51.12.083 +04:30", DateTimeFormat.forPattern("dd/MM/yy HH:mm.ss.SSS Z"))

工作正常。

异常的原因是:

java.time.format.DateTimeParseException: Text '02/05/16 11:51.12.083 +04:30' could not be parsed at index 22

难道我做错了什么？

Answer 1

如果您阅读 the javadoc of DateTimeFormatter ，您将找到详细说明如何使用 Z 的部分。抵消(强调我的):

Offset Z: This formats the offset based on the number of pattern letters. One, two or three letters outputs the hour and minute, without a colon, such as '+0130'. The output will be '+0000' when the offset is zero. Four letters outputs the full form of localized offset, equivalent to four letters of Offset-O. The output will be the corresponding localized offset text if the offset is zero. Five letters outputs the hour, minute, with optional second if non-zero, with colon. It outputs 'Z' if the offset is zero. Six or more letters throws IllegalArgumentException.

所以使用 5 Z s 将按预期工作:

ZonedDateTime.parse("02/05/16 11:51.12.083 +04:30",
                    DateTimeFormatter.ofPattern("dd/MM/yy HH:mm.ss.SSS ZZZZZ"));

请注意，您可以通过以下方式获得类似的结果:

z

zz

zzz

zzzz

xxx

XXX

xxxxx

XXXXX