@JsonFormat(shape = Shape.POJO) does not work for java.util.Map serialization via property annotation #5405
Description
(note: split off from #1419 )
So, although Class/default-config to serialize Maps works, doing the same via property annotation doesn't.
Following:
static class Bean476Container
{
@JsonFormat(shape=JsonFormat.Shape.POJO)
public Map<String, Object> stuff;
}
will not use "POJO" style serialization.
Activity
Refactor Map-part of test #1419 into #5405
Update test file for #5405 (#5446)
Fix FasterXML#5405, @jsonformat(shape = Shape.POJO) does not work for…
JacksonJang commentedon Dec 1, 2025
I just submitted the PR.
I was considering branching based on the shape (POJO or OBJECT), but ended up using empty instead.
I wasn’t completely sure which approach would be better, so I pushed it.
Fix FasterXML#5405: Apply property-level JsonFormat overrides for cac…
Fix FasterXML#5405: @jsonformat(shape = Shape.POJO) does not work for…