本文介绍了在Java中将本地时间戳转换为UTC时间戳的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!
问题描述
我有一个毫秒-since-local-epoch 时间戳,我想将它转换为毫秒-since-UTC-epoch 时间戳.快速浏览一下文档,看起来像这样可以工作:
I have a milliseconds-since-local-epoch timestamp that I'd like to convert into a milliseconds-since-UTC-epoch timestamp. From a quick glance through the docs it looks like something like this would work:
int offset = TimeZone.getDefault().getRawOffset();
long newTime = oldTime - offset;
有没有更好的方法来做到这一点?
Is there a better way to do this?
推荐答案
使用 Calendar
获取本地 Epoch 的偏移量,然后将其添加到本地 epoch 时间戳.
Use a Calendar
to get what the offset was at the local Epoch, then add that to the local-epoch timestamp.
public static long getLocalToUtcDelta() {
Calendar local = Calendar.getInstance();
local.clear();
local.set(1970, Calendar.JANUARY, 1, 0, 0, 0);
return local.getTimeInMillis();
}
public static long converLocalTimeToUtcTime(long timeSinceLocalEpoch) {
return timeSinceLocalEpoch + getLocalToUtcDelta();
}
这篇关于在Java中将本地时间戳转换为UTC时间戳的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持跟版网!
本站部分内容来源互联网,如果有图片或者内容侵犯了您的权益,请联系我们,我们会在确认后第一时间进行删除!