using @EnableSpringDataWebSupport with spring-data-rest results in BeanDefinitionOverrideException

[zyro23]

adding @EnableSpringDataWebSupport in a project that uses spring-boot-starter-data-rest results in a BeanDefinitionOverrideException preventing application startup.

context: i want to use PageSerializationMode.VIA_DTO. while that "just worked" by default with spring-data-commons 3.3.0, from 3.3.1 on we have to add @EnableSpringDataWebSupport(pageSerializationMode = EnableSpringDataWebSupport.PageSerializationMode.VIA_DTO) explicitly (due to #3101).

sample app (boot-3.3.1-SNAPSHOT, spring-data-bom-2024.0.1-SNAPSHOT, spring-data-commons-3.3.1-SNAPSHOT at the time of writing) will be referenced asap.

2024-06-15T10:28:59.121+02:00  INFO 26728 --- [demo] [           main] com.example.demo.DemoApplication         : Starting DemoApplication using Java 21.0.1 with PID 26728 [...]
2024-06-15T10:28:59.123+02:00  INFO 26728 --- [demo] [           main] com.example.demo.DemoApplication         : No active profile set, falling back to 1 default profile: "default"
2024-06-15T10:28:59.450+02:00  WARN 26728 --- [demo] [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.support.BeanDefinitionOverrideException: Invalid bean definition with name 'pageableResolver' defined in class path resource [org/springframework/data/rest/webmvc/config/RepositoryRestMvcConfiguration.class]: Cannot register bean definition [Root bean: class [null]; scope=; abstract=false; lazyInit=null; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.data.rest.webmvc.config.RepositoryRestMvcConfiguration; factoryMethodName=pageableResolver; initMethodNames=null; destroyMethodNames=[(inferred)]; defined in class path resource [org/springframework/data/rest/webmvc/config/RepositoryRestMvcConfiguration.class]] for bean 'pageableResolver' since there is already [Root bean: class [null]; scope=; abstract=false; lazyInit=null; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.data.web.config.HateoasAwareSpringDataWebConfiguration; factoryMethodName=pageableResolver; initMethodNames=null; destroyMethodNames=[(inferred)]; defined in class path resource [org/springframework/data/web/config/HateoasAwareSpringDataWebConfiguration.class]] bound.
2024-06-15T10:28:59.455+02:00  INFO 26728 --- [demo] [           main] .s.b.a.l.ConditionEvaluationReportLogger : 

Error starting ApplicationContext. To display the condition evaluation report re-run your application with 'debug' enabled.
2024-06-15T10:28:59.468+02:00 ERROR 26728 --- [demo] [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

The bean 'pageableResolver', defined in class path resource [org/springframework/data/rest/webmvc/config/RepositoryRestMvcConfiguration.class], could not be registered. A bean with that name has already been defined in class path resource [org/springframework/data/web/config/HateoasAwareSpringDataWebConfiguration.class] and overriding is disabled.

Action:

Consider renaming one of the beans or enabling overriding by setting spring.main.allow-bean-definition-overriding=true

[quaff]

spring-projects/spring-boot#39797 is trying to fix this.