I know how to customize the default ObjectMapper bean. But for one specific Controller/endpoint, I'd like to use a different objectmapper. How can I do this?
I think my question is similar to this one but there are no answers yet. Happy to get an answer there and mark this as duplicate
There's a good solution by @xerx593 linked in the question's comments but I took a different approach for mine because I was returning a generic Map<String,Object> graphql return type and I didn't feel comfortable changing the media-type or applying the object mapper to all Map's. I prefer their solution for the general case as it's more elegant
I simply serialized the return object as a string and returned it.
For example, I turned something like this
@GetMapping(produces = MediaType.APPLICATION_JSON_VALUE)
public Foo getFoo() {
return new Foo();
}
to something like this
private ObjectMapper customMapper = ...;
@GetMapping(produces = MediaType.APPLICATION_JSON_VALUE)
public String getFoo() {
return customMapper.writeValueAsString(new Foo());
}