java - Duration 不支持与类文档相反的 DAYS

Question

在java.time Java 8 及更高版本的框架，Duration类说:

This class models a quantity or amount of time in terms of seconds and nanoseconds. It can be accessed using other duration-based units, such as minutes and hours. In addition, the DAYS unit can be used and is treated as exactly equal to 24 hours, thus ignoring daylight savings effects.

然而，当我调用 get方法并通过 ChronoUnit.DAYS , 抛出异常。

LocalTime start = LocalTime.of ( 0 , 0 , 0 ); // First moment of the day.
LocalTime stop = LocalTime.of ( 2 , 0 , 0 ); // 2 AM.

Duration duration = Duration.between ( start , stop );
long days = duration.get ( ChronoUnit.DAYS );

Exception in thread "main" java.time.temporal.UnsupportedTemporalTypeException: Unsupported unit: Days

我是不是误解了什么，或者滥用了类(class)？

Answer 1

关于 Duration 类的 get 的文档。

Gets the value of the requested unit. This returns a value for each of the two supported units, SECONDS and NANOS. All other units throw an exception.

但是，Duration 类有一个名为 toDays 的方法:

Gets the number of days in this duration. This returns the total number of days in the duration by dividing the number of seconds by 86400. This is based on the standard definition of a day as 24 hours.