JodaTime - 如何获取当前时间的UTC时间
JodaTime - 如何获取当前时间的UTC时间
我想要获取当前的UTC时间。我目前的做法是(仅用于测试目的):
DateTime dt = new DateTime(); DateTimeZone tz = DateTimeZone.getDefault(); LocalDateTime nowLocal = new LocalDateTime(); DateTime nowUTC = nowLocal.toDateTime(DateTimeZone.UTC); Date d1 = nowLocal.toDate(); Date d2 = nowUTC.toDate(); L.d("tz: " + tz.toString()); L.d("local: " + d1.toString()); L.d("utc: " + d2.toString());
- `d1`是我的本地时间,没问题
- `d2`是我的本地时间加1,但应该是减1...
我的本地时区是UTC+1(根据调试输出和此处列表:https://www.joda.org/joda-time/timezones.html)...
我如何正确地从一个时区转换到另一个时区(包括毫秒表示)?
编辑
我需要日期/毫秒...不是关于正确显示时间...
编辑2
现在,在评论和答案的帮助下,我尝试了以下代码:
DateTimeZone tz = DateTimeZone.getDefault(); DateTime nowLocal = new DateTime(); LocalDateTime nowUTC = nowLocal.withZone(DateTimeZone.UTC).toLocalDateTime(); DateTime nowUTC2 = nowLocal.withZone(DateTimeZone.UTC); Date dLocal = nowLocal.toDate(); Date dUTC = nowUTC.toDate(); Date dUTC2 = nowUTC2.toDate(); L.d(Temp.class, "------------------------"); L.d(Temp.class, "tz : " + tz.toString()); L.d(Temp.class, "local : " + nowLocal + " | " + dLocal.toString()); L.d(Temp.class, "utc : " + nowUTC + " | " + dUTC.toString()); // <= WORKING SOLUTION L.d(Temp.class, "utc2 : " + nowUTC2 + " | " + dUTC2.toString());
输出结果为:
tz : Europe/Belgrade local : 2015-01-02T15:31:38.241+01:00 | Fri Jan 02 15:31:38 MEZ 2015 utc : 2015-01-02T14:31:38.241 | Fri Jan 02 14:31:38 MEZ 2015 utc2 : 2015-01-02T14:31:38.241Z | Fri Jan 02 15:31:38 MEZ 2015
我希望本地日期显示15点,UTC日期显示14点...
目前,这个方法似乎可行...
----- 编辑3 - 最终解决方案 -----
希望这是一个好的解决方案...我认为它考虑了我得到的所有提示...
DateTimeZone tz = DateTimeZone.getDefault(); DateTime nowUTC = new DateTime(DateTimeZone.UTC); DateTime nowLocal = nowUTC.withZone(tz); // 这将生成不同的日期!!!正是我想要的! Date dLocal = nowLocal.toLocalDateTime().toDate(); Date dUTC = nowUTC.toLocalDateTime().toDate(); L.d("tz : " + tz.toString()); L.d("local : " + nowLocal + " | " + dLocal.toString()); L.d("utc : " + nowUTC + " | " + dUTC.toString());
输出结果为:
tz : Europe/Belgrade local : 2015-01-03T21:15:35.170+01:00 | Sat Jan 03 21:15:35 MEZ 2015 utc : 2015-01-03T20:15:35.170Z | Sat Jan 03 20:15:35 MEZ 2015