JSR validator bean missing if a custom Spring Validator bean is present

This problem occurred after upgrade from Spring Boot 1.5.2 to 1.5.3.

I have some custom Spring validator beans for Spring Data REST while also relying on standard JSR validator in other parts of the application.

After upgrading from Spring Boot 1.5.2 to 1.5.3 there is no longer a JSR validator bean present.

Error:

Bean method 'defaultValidator' in 'DefaultValidatorConfiguration' not loaded because @ConditionalOnMissingBean (types: javax.validation.Validator,org.springframework.validation.Validator; SearchStrategy: all) found beans 'beforeSaveUserValidator', 'beforeCreateGroupValidator', 'beforeCreateUserValidator'

Debug auto configuration:

DefaultValidatorConfiguration#defaultValidator:
      Did not match:
         - @ConditionalOnMissingBean (types: javax.validation.Validator,org.springframework.validation.Validator; SearchStrategy: all) found beans 'beforeSaveUserValidator', 'beforeCreateGroupValidator', 'beforeCreateUserValidator' (OnBeanCondition)

https://github.com/spring-projects/spring-boot/commit/c9561f031c591ca55e028ca66250511c5e62002a changed this behaviour since it does not provide a validator if a Spring validator is present.

Not sure if this is should be considered a bug and I can easily work around this problem and provide this bean myself, but perhaps Spring Boot could create a JSR validator if not present?

[oyvindhorneland]

Superb! Thank you!

[asaarnak]

@snicoll Finally i had time to take a look at this issue and managed to workaround it. We were returning javax.validation.ValidationFactory as bean type so the following condition created new bean defaultValidator.

@ConditionalOnMissingBean(type = { "javax.validation.Validator", "org.springframework.validation.Validator" })

The fix was to return the LocalValidatorFactoryBean type instead of ValidatorFactory. @Bean public LocalValidatorFactoryBean beanValidatorFactory()