Unable to set deserialization feature

[mozzer39]

I have a problem with setting a deserialization feature in Jackson 3. With Jackson 3 there's a change in behavior while mapping null values into primitive types. I created a configuration class, but unfortunately it's not working and I still get error while deserialization. What am I missing?

@Configuration
public class JsonMapperConfig {

    @Bean
    @Primary
    JsonMapperBuilderCustomizer jacksonCustomizer() {
        return builder -> builder.disable(DeserializationFeature.FAIL_ON_NULL_FOR_PRIMITIVES);
    }
}

The error I'm getting:

Caused by: tools.jackson.databind.exc.MismatchedInputException: Cannot map `null` into type `int` (set DeserializationConfig.DeserializationFeature.FAIL_ON_NULL_FOR_PRIMITIVES to 'false' to allow)
 at [Source: REDACTED (`StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION` disabled); byte offset: #766] (through reference chain: xxx)

[pjfanning]

That JsonMapperBuilderCustomizer is not a Jackson class. Please report this issue to the team that own that class.

I believe it is a spring-boot class.

[JooHyukKim]

In addition to what @pjfanning says, chances are....

Spring is not respecting the config,
Or your not using the instance configured by customizer.

Either way, reporting over at Spring community is your best bet @mozzer39