MULE how to calculate number of days between two dates in dataweave

Question

I have two dates in JSON response "startDate": "2017-04-30", "EndDate": "2017-05-27",

they are transformed in dataweave as dates. I need to calculate number of days between those two dates. Is there any function in dataweave to do it? Thanks

Answer 1

Here you go:

  {
     "diff": ((payload.start_date as :date) - (payload.end_date as :date)).days
   }

Answer 2

建议使用MEL全局函数并使用ChronoUnit.DAYS.between(startDate.toInstant(), endDate.toInstant())

Answer 3

Adding to the answer by @Dinesh , The returned object from subtracting dates is a duration object which you can perform different methods on it. More about Duration class

Answer 4

%dw 2.0 output application/json

fun getDiffDays(date1: String, date2: String) = ( (date1 as Date) - (date2 as Date)).days

---

{

"diff4":        getDiffDays("2021-10-04", "2020-10-04"),

}