如何使用 ZonedDateTime 或 Java 8 将任何日期时间转换为 UTC
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How to convert any Date time to UTC using ZonedDateTime or Java 8
提问by Bilal Shah
I am trying to convert date 06-12-2015 02:10:10 PMfrom default zone to UTC using ZonedDateTime.
我正在尝试使用 将日期06-12-2015 02:10:10 PM从默认区域转换为 UTC ZonedDateTime。
LocalDateTime localDateTime = LocalDateTime.ofInstant(date.toInstant(), ZoneId.systemDefault());
ZonedDateTime utc = ZonedDateTime.of(localDateTime, ZoneOffset.UTC);
but utcreturns 2015-12-06T14:10:10Zinstead of 06-12-2015 09:10:10 AM
但utc返回2015-12-06T14:10:10Z而不是06-12-2015 09:10:10 AM
How can I convert date from default zone to UTC? The answer given hereconvert current time to UTC.
如何将日期从默认区域转换为 UTC？此处给出的答案将当前时间转换为 UTC。
采纳答案by Elliott Frisch
You can use ZonedDateTime.ofInstant(Instant, ZoneId)where the second parameter is UTC(the instant knows the local offset). Something like,
您可以使用ZonedDateTime.ofInstant(Instant, ZoneId)第二个参数所在的位置UTC（即刻知道本地偏移量）。就像是，
String source = "06-12-2015 02:10:10 PM";
String pattern = "MM-dd-yyyy hh:mm:ss a";
DateFormat sdf = new SimpleDateFormat(pattern);
try {
Date date = sdf.parse(source);
ZonedDateTime zdt = ZonedDateTime.ofInstant(date.toInstant(), ZoneId.of("UTC"));
System.out.println(zdt.format(DateTimeFormatter.ofPattern(pattern)));
} catch (ParseException e) {
e.printStackTrace();
}
And I get (corresponding to my local zone offset)
我得到（对应于我的本地区域偏移量）
06-12-2015 06:10:10 PM
