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(); }更多推荐
在Java中将本地时间戳转换为UTC时间戳
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