以小时为单位获取两个日期之间的差额 [英] Get the difference between two dates in hours

问题描述

我正在尝试计算两个joda日期之间的时差.

I'm trying to calculate the hour difference between two joda dates.

val d1 = getDateTime1()
val d2 = getDateTime2()

这是我所做的:

# attemp1
val hours = Hours.hoursBetween(d1, d2) // error - types mismatch

# attempt2
val p = Period(d1, d2, PeriodType.hours()) // error - there is such a constructor
p.getHours

那我该怎么做?

推荐答案

getDateTime1的类型应为org.joda.time.DateTime.

这没关系:

val d1: org.joda.time.DateTime = DateTime.now
val d2: org.joda.time.DateTime = DateTime.nextMonth

val hours = Hours.hoursBetween(d1, d2)
// org.joda.time.Hours = PT672H

对于Period，没有工厂方法apply，您应该使用new创建Period:

There is no factory method apply for Period, you should use new to create Period:

val p = new Period(d1, d2, PeriodType.hours())
// org.joda.time.Period = PT672H

如果您使用的是 nscala-时间，则也可以使用方法to来得到Interval，然后将其转换为Period:

If you are using nscala-time you could also use method to to get Interval and than convert it to Period:

d1 to d2 toPeriod PeriodType.hours
// org.joda.time.Period = PT672H

(d1 to d2).duration.getStandardHours
// Long = 672

也尝试sbt clean.

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