AOT processing for bean validation fails with `NoClassDefFoundError`

[rkudryashov]

If I use such a config:

the generated project fails with:

2024-11-22T10:33:43.774+03:00  INFO 21892 --- [demo] [           main] com.example.demo.DemoApplicationKt       : Starting DemoApplicationKt using Java 21.0.1 with PID 21892 (...)
2024-11-22T10:33:43.776+03:00  INFO 21892 --- [demo] [           main] com.example.demo.DemoApplicationKt       : No active profile set, falling back to 1 default profile: "default"
2024-11-22T10:33:44.027+03:00  INFO 21892 --- [demo] [           main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2024-11-22T10:33:44.037+03:00  INFO 21892 --- [demo] [           main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 5 ms. Found 0 JPA repository interfaces.
Exception in thread "main" java.lang.NoClassDefFoundError: org/reactivestreams/Publisher
        at java.base/java.lang.Class.getDeclaredFields0(Native Method)
        at java.base/java.lang.Class.privateGetDeclaredFields(Class.java:3473)
        at java.base/java.lang.Class.getDeclaredFields(Class.java:2542)
        at org.hibernate.validator.internal.util.privilegedactions.GetDeclaredFields.run(GetDeclaredFields.java:30)
        at org.hibernate.validator.internal.util.privilegedactions.GetDeclaredFields.run(GetDeclaredFields.java:17)
        at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.run(AnnotationMetaDataProvider.java:602)
        at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.getFieldMetaData(AnnotationMetaDataProvider.java:217)
        at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.retrieveBeanConfiguration(AnnotationMetaDataProvider.java:130)
        at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.getBeanConfiguration(AnnotationMetaDataProvider.java:121)
        at org.hibernate.validator.internal.metadata.BeanMetaDataManagerImpl.getBeanConfigurationForHierarchy(BeanMetaDataManagerImpl.java:234)
        at org.hibernate.validator.internal.metadata.BeanMetaDataManagerImpl.createBeanMetaData(BeanMetaDataManagerImpl.java:201)
        at org.hibernate.validator.internal.metadata.BeanMetaDataManagerImpl.getBeanMetaData(BeanMetaDataManagerImpl.java:165)
        at org.hibernate.validator.internal.engine.ValidatorImpl.getConstraintsForClass(ValidatorImpl.java:316)
        at org.springframework.validation.beanvalidation.BeanValidationBeanRegistrationAotProcessor$BeanValidationDelegate.processAheadOfTime(BeanValidationBeanRegistrationAotProcessor.java:125)
        at org.springframework.validation.beanvalidation.BeanValidationBeanRegistrationAotProcessor$BeanValidationDelegate.lambda$processAheadOfTime$0(BeanValidationBeanRegistrationAotProcessor.java:170)
        at org.springframework.util.ReflectionUtils.doWithFields(ReflectionUtils.java:728)
        at org.springframework.util.ReflectionUtils.doWithFields(ReflectionUtils.java:707)
        at org.springframework.validation.beanvalidation.BeanValidationBeanRegistrationAotProcessor$BeanValidationDelegate.processAheadOfTime(BeanValidationBeanRegistrationAotProcessor.java:150)
        at org.springframework.validation.beanvalidation.BeanValidationBeanRegistrationAotProcessor$BeanValidationDelegate.processAheadOfTime(BeanValidationBeanRegistrationAotProcessor.java:110)
        at org.springframework.validation.beanvalidation.BeanValidationBeanRegistrationAotProcessor.processAheadOfTime(BeanValidationBeanRegistrationAotProcessor.java:75)
        at org.springframework.beans.factory.aot.BeanDefinitionMethodGeneratorFactory.getAotContributions(BeanDefinitionMethodGeneratorFactory.java:155)
        at org.springframework.beans.factory.aot.BeanDefinitionMethodGeneratorFactory.getBeanDefinitionMethodGenerator(BeanDefinitionMethodGeneratorFactory.java:99)
        at org.springframework.beans.factory.aot.BeanDefinitionMethodGeneratorFactory.getBeanDefinitionMethodGenerator(BeanDefinitionMethodGeneratorFactory.java:115)
        at org.springframework.beans.factory.aot.BeanRegistrationsAotProcessor.processAheadOfTime(BeanRegistrationsAotProcessor.java:49)
        at org.springframework.beans.factory.aot.BeanRegistrationsAotProcessor.processAheadOfTime(BeanRegistrationsAotProcessor.java:37)
        at org.springframework.context.aot.BeanFactoryInitializationAotContributions.processAheadOfTime(BeanFactoryInitializationAotContributions.java:82)
        at org.springframework.context.aot.BeanFactoryInitializationAotContributions.getContributions(BeanFactoryInitializationAotContributions.java:69)
        at org.springframework.context.aot.BeanFactoryInitializationAotContributions.<init>(BeanFactoryInitializationAotContributions.java:52)
        at org.springframework.context.aot.BeanFactoryInitializationAotContributions.<init>(BeanFactoryInitializationAotContributions.java:47)
        at org.springframework.context.aot.ApplicationContextAotGenerator.lambda$processAheadOfTime$0(ApplicationContextAotGenerator.java:58)
        at org.springframework.context.aot.ApplicationContextAotGenerator.withCglibClassHandler(ApplicationContextAotGenerator.java:67)
        at org.springframework.context.aot.ApplicationContextAotGenerator.processAheadOfTime(ApplicationContextAotGenerator.java:53)
        at org.springframework.context.aot.ContextAotProcessor.performAotProcessing(ContextAotProcessor.java:106)
        at org.springframework.context.aot.ContextAotProcessor.doProcess(ContextAotProcessor.java:84)
        at org.springframework.context.aot.ContextAotProcessor.doProcess(ContextAotProcessor.java:49)
        at org.springframework.context.aot.AbstractAotProcessor.process(AbstractAotProcessor.java:82)
        at org.springframework.boot.SpringApplicationAotProcessor.main(SpringApplicationAotProcessor.java:80)
Caused by: java.lang.ClassNotFoundException: org.reactivestreams.Publisher
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
        at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526)
        ... 37 more

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':processAot'.
> Process 'command '...'' finished with non-zero exit value 1

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
> Get more help at https://help.gradle.org.

BUILD FAILED in 2s
5 actionable tasks: 3 executed, 2 up-to-date

There is no error if I comment out any of the following lines:

implementation("org.springframework.boot:spring-boot-starter-data-jpa")
implementation("org.springframework.boot:spring-boot-starter-validation")

If needed, the repro project is here.

[odrotbohm]

I wonder if we could skip BeanDefinitions with role BeanDefinition.ROLE_INFRASTRUCTURE from the Hibernate Validator scanning, as they're unlikely to carry any validation annotations in the first place.

[hpoettker]

JPA is not required to reproduce the issue. At least, I also see it with spring-boot-starter-jdbc and spring-boot-starter-validation.

The root cause seems to be that the BeanValidationBeanRegistrationAotProcessor processes TransactionInterceptor, which extends TransactionAspectSupport and has field of type ConcurrentMap<Method, ReactiveTransactionSupport>. And the reference to org.reactivestreams.Publisher seems to come from here.

The processor is prepared to just carry on when it encounters a TypeNotPresentException, maybe it should do the same for NoClassDefFoundError: https://github.com/spring-projects/spring-framework/blob/main/spring-context/src/main/java/org/springframework/validation/beanvalidation/BeanValidationBeanRegistrationAotProcessor.java#L133

[sbrannen]

• superseded by Skip runtime hint registration for validation constraint with missing dependencies #33949