Configuration for jackson to ignore unknown properties by default

[leocwolter]

I would like to avoid adding the annotation @JsonIgnoreProperties(ignoreUnknown = true) on every class, is it possible to add a configuration for that purpose?

I was thinking of something like:

spring.jackson.default-property-ignore=ignore_unknown

[philwebb]

@leocwolter Can you use a Jackson2ObjectMapperBuilderCustomizer bean and call mixIn(Object.class, MixinAnnotations.class) to do this?

[philwebb]

Oh wait. I misread your initial comment. I think we set ignoreUnknown for unknown properties by default. Can you share a sample that shows what you're trying to do?

[philwebb]

See #1237. We do have DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES defaulting to false already.

[agogs]

You can use spring.jackson.deserialization.fail-on-unknown-properties=false

[jlous]

The spring default and spring override do not apply to the objectmapper Hibernate uses. Customising parsing for json columns in spring is still impenetrable magic.

[wilkinsona]

Prior to Hibernate 6 (which is not yet supported), I don't think Hibernate uses Jackson. To double-check, I prepped Hibernate's 5.6.9 tag and found no occurrences of jackson.

If you think there's something that Spring Boot should be configuring with the main ObjectMapper, please open a new issue and we can take a look. We'll need to know exactly where that ObjectMapper is being used. A small sample that reproduces the problem you're facing is the ideal way to show us.

[jlous]

Ok. I just saw a way of making hibernate use spring's objectmapper (https://stackoverflow.com/questions/66656772/use-jackson-objectmapper-configured-by-spring-boot-in-hibernate) so I assumed it used a similar one by default.

I do wish there was a simple way to achieve this with regular spring configs

[wilkinsona]

The person who asked that question is using Hibernate Types, a library that builds on top of Hibernate. Boot knows nothing about it so it isn't something that we can configure automatically.