问题
It's odd enough, but I didn't find any result about converting Joda(Time) DateTime to Unix DateTime (or timestamp, whichever is the correct name). How can I do this?
回答1:
Any object that inherits from BaseDateTime (including DateTime) has the method
public long getMillis()
According to the API it:
Gets the milliseconds of the datetime instant from the Java epoch of 1970-01-01T00:00:00Z.
So a working example to get the seconds would simply be:
new DateTime().getMillis() / 1000
For completeness, the definition of the Unix Timestamp according to Wikipedia:
Unix time, or POSIX time, is a system for describing instants in time, defined as the number of seconds that have elapsed since 00:00:00 Coordinated Universal Time (UTC), Thursday, 1 January 1970, not counting leap seconds
回答2:
Java 8 added a new API for working with dates and times. With Java 8 you can use
long unixTimestamp = Instant.now().getEpochSecond();
来源：https://stackoverflow.com/questions/22681348/joda-datetime-to-unix-datetime