Hi, after updating from a 2.0.x version of jackson to 2.9.2 we faced an issue with the serialization of Map.Entity as reported also here #565. One of the proposed solution to have a backward-compatibility to versions prior to 2.5, as a default, is this one:

ObjectMapper mapper = new ObjectMapper(); mapper.configOverride(Map.Entry.class).setFormat(JsonFormat.Value.forShape(JsonFormat.Shape.OBJECT));

But unluckly is not working. Is there a way to fix that or have a similar solution without using annotations?

Thanks.