Previously, the auto-configured JsonMapper would back off when any
type of ObjectMapper was defined. Updating this was missed as part
of the move to Jackson 3 where both Boot and Framework now intend to
use the more specific JsonMapper type.
This commit updates the condition such that a JsonMapper will still
be auto-configured when any other type of ObjectMapper is definied.
It will now only back off when a JsonMapper bean is defined.
Closes gh-47379
Remove spring-boot-json-test module and spread code between
`spring-boot-test`, `spring-boot-test-autoconfigure` and JSON
technology modules.
See gh-46356
See gh-47322
The spring.jackson.read and spring.jackson.write properties are
JSON-specific. To make this more clear, this commit moves them
beneath spring.jackson.json. This also paves the way for
spring.jackson.cbor and spring.jackson.xml properties for CBOR- and
XML-specific settings should we add auto-configuration for XMLMapper
and/or CBORMapper in the future.
Closes gh-47328
Prior to this commit, Spring Boot would use Framework's
`Jackson2ObjectMapperBuilder` to configure the `ObjectMapper` instance.
This builder would configure the `ProblemDetail` mixin automatically.
With the introduction of Jackson 3.x support, Spring Framework removed
its builder in favor of the native Jackson builder. As a result, the
mixin is not registered with the `JsonMapper` aymore.
This commit ensures that the mixin is registered if the `ProblemDetail`
class is present in the classpath.
Closes gh-47298
Andy Wilkinson
Phillip Webb
Brian Clozel
Moritz Halbritter