如何在Java中的UTC + 0中获取日期? [英] How to get Date in UTC+0 in Java?
问题描述
我正在使用以下代码以ISO-8601格式获取日期。对于UTC,返回的值不包含偏移量。 ),zoneId);
返回dateTime.format(DateTimeFormatter.ISO_OFFSET_DATE_TIME);
对于其他时间格式,返回的响应如下:
2016-10-30T17:00:00-07:00
如果UTC返回的值是:
2016-10-30T17:00:00Z
我希望它是:
2016-10-30T17:00:00 + 00: 00
注意:请勿使用UTC-0,因为-00:00不符合ISO8601。
当偏移量为零时,内置格式化程序使用 Z
。 Z
是 Zulu
的缩写,表示 UTC 。
您必须使用自定义格式程序,并使用 java.time.format.DateTimeFormatterBuilder
为偏移量为零时设置自定义文本:
DateTimeFormatter fmt = new DateTimeFormatterBuilder ()
//日期和时间,使用内置的
.append(DateTimeFormatter.ISO_LOCAL_DATE_TIME)
//附加偏移量,当偏移量为零时设置 -00:00
.appendOffset( + HH:MM, -00:00)
//创建格式化程序
.toFormatter();
System.out.println(dateTime.format(fmt));
这将打印:
2016-10-30T17:00:00-00:00
仅提醒您, -00:00
不是符合ISO8601 。该标准仅允许 Z
和 +00:00
(以及变体 +0000
和 +00
),当偏移量为零时。
如果要 +00:00
,只需将上面的代码更改为:
DateTimeFormatter fmt = new DateTimeFormatterBuilder ()
//日期和时间,使用内置的
.append(DateTimeFormatter.ISO_LOCAL_DATE_TIME)
//附加偏移量
.appendPattern( xxx)
//创建格式化程序
.toFormatter();
此格式化程序将产生输出:
2016-10-30T17:00:00 + 00:00
I am using the following code to get the date in ISO-8601 format. For UTC the value returned does not contain offset.
OffsetDateTime dateTime = OffsetDateTime.ofInstant(
Instant.ofEpochMilli(epochInMilliSec), zoneId);
return dateTime.format(DateTimeFormatter.ISO_OFFSET_DATE_TIME);
For other time formats the response returned looks like:
2016-10-30T17:00:00-07:00
In case of UTC the value returned is:
2016-10-30T17:00:00Z
I want it to be:
2016-10-30T17:00:00+00:00
Note: Do not use UTC-0 as -00:00 is not ISO8601 compliant.
The built-in formatter uses Z
when the offset is zero. The Z
is short for Zulu
and means UTC.
You'll have to use a custom formatter, using a java.time.format.DateTimeFormatterBuilder
to set a custom text for when the offset is zero:
DateTimeFormatter fmt = new DateTimeFormatterBuilder()
// date and time, use built-in
.append(DateTimeFormatter.ISO_LOCAL_DATE_TIME)
// append offset, set "-00:00" when offset is zero
.appendOffset("+HH:MM", "-00:00")
// create formatter
.toFormatter();
System.out.println(dateTime.format(fmt));
This will print:
2016-10-30T17:00:00-00:00
Just reminding that -00:00
is not ISO8601 compliant. The standard allows only Z
and +00:00
(and the variations +0000
and +00
) when the offset is zero.
If you want +00:00
, just change the code above to:
DateTimeFormatter fmt = new DateTimeFormatterBuilder()
// date and time, use built-in
.append(DateTimeFormatter.ISO_LOCAL_DATE_TIME)
// append offset
.appendPattern("xxx")
// create formatter
.toFormatter();
This formatter will produce the output:
2016-10-30T17:00:00+00:00
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