I have a problem or possibly I found a bug in Spring Boot. I am not sure at the moment. I have a project with the following dependencies
- spring-boot-starter-thymeleaf
- spring-boot-starter-web
- spring-boot-starter-actuator
- spring-boot-starter-mail
- spring-cloud-starter-bus-amqp
- spring-cloud-starter-config
- spring-cloud-starter-eureka
I want to use a messageSource in my Thymeleaf templates and so I set the following in my application.yml:
spring:
messages:
basename: de/mycompany/messages/message
and placed a message.properties and a message_de.properties in the above package. But the replacing did not work. So I debugged MessageSourceAutoConfiguration and found, that the @Conditional(ResourceBundleCondition.class) did work. It found my Resources and returned true. So I let print the debug report and found, that it says
MessageSourceAutoConfiguration
- Bundle found for spring.messages.basename: de/mycompany/messages/message (MessageSourceAutoConfiguration.ResourceBundleCondition)
- @ConditionalOnMissingBean (types: org.springframework.context.MessageSource; SearchStrategy: all) found the following [messageSource] (OnBeanCondition)
So there is another messageSource Bean already defined, but i wondered where it did come from. So i investigated further and found the following log output:
AnnotationConfigEmbeddedWebApplicationContext : Unable to locate MessageSource with name 'messageSource': using default [org.springframework.context.support.DelegatingMessageSource@60df7989]
In fact it comes from the class AbstractApplicationContext in method initMessageSource (around line 622). There it checks for a bean with name "messageSource" and if it doesn't find one, it creates the above mentioned DelegatingMessageSource.
Am I missing something? Do I have to do something to get the MessageSourceAutoConfiguration happen before this AbstractApplicationContext stuff? Or is this really a bug?
For myself I fixed it by simply creating the messageSource myself as a @Bean, but using the AutoConfiguration would be far smarter :)
Greetings Christian
