OffsetDateTime-打印偏移量而不是Z [英] OffsetDateTime - print offset instead of Z

问题描述

我有此代码:

String date = "2019-04-22T00:00:00+02:00";

OffsetDateTime odt = OffsetDateTime
      .parse(date, DateTimeFormatter.ISO_OFFSET_DATE_TIME)                             
      .withOffsetSameInstant(ZoneOffset.of("+00:00"));

System.out.println(odt);

此打印:2019-04-21T22:00Z

如何打印2019-04-21T22:00+00:00?用偏移量代替Z.

How can I print 2019-04-21T22:00+00:00? With offset instead of Z.

推荐答案

在标准库中，没有任何静态DateTimeFormatter执行此操作. 它们默认为Z或GMT.

None of the static DateTimeFormatters do this in the standard library. They either default to Z or GMT.

要获得无偏移的+00:00，您将必须构建自己的DateTimeFormatter.

To achieve +00:00 for no offset, you will have to build your own DateTimeFormatter.

ZonedDateTime now = ZonedDateTime.now(ZoneId.of("UTC"));

DateTimeFormatter dateTimeFormatter = new DateTimeFormatterBuilder()
        .append(ISO_LOCAL_DATE_TIME) // use the existing formatter for date time
        .appendOffset("+HH:MM", "+00:00") // set 'noOffsetText' to desired '+00:00'
        .toFormatter();

System.out.println(now.format(dateTimeFormatter)); // 2019-12-20T17:58:06.847274+00:00

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