serialize list of dates with Jackson

Question

I'm trying to serialize an Object that contains a List of Dates and i want to serialize to a JSON list of dates (String) in a specific format (yyyy-MM-dd).

private List<Date> executionDates;

will become like:

"executionDates": [
  "2016-07-22",
  "2016-07-23",
  "2016-07-24"
]

It is possible to do it with annotations?

Thanks in advance.

Answer 1

I found the solution. I had to use property contentUsing instead of using in annotation like this:

@JsonSerialize(contentUsing = JsonDateSerializer.class)

contentUsing property is used for collections. From class documentation:

Serializer class to use for serializing contents (elements of a Collection/array, values of Maps) of annotated property. Can only be used on properties (methods, fields, constructors), and not value classes themselves (as they are typically generic).