SpringBoot Cannot configure LocalResolver bean in Sprint Boot 3.1.0

Using Spring Boot 3.1.0, I cannot create a bean named "localeResolver" with type LocalResolver. When application starts, I get the following:

The bean 'localeResolver', defined in class path resource [path/to/MyConfiguration.class], could not be registered. A bean with that name has already been defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class] and overriding is disabled.

And I'm defining LocaleResolver bean like that:

@Configuration
@EnableConfigurationProperties({SomePropertiesClasses})
public class MyConfiguration {
    private final MyClass myClass;

    public MessagesConfiguration(MyClass myClass) {
        this.myClass = myClass;
    }

    @Bean
    public LocaleResolver localeResolver() {
        // ...
    }
}

Without setting spring.main.allow-bean-definition-overriding=true I want to define a LocaleResolver bean.

Note: I don't have @EnableWebMvc annotation in my code.

Comment From: wilkinsona

Thanks for the report. Unfortunately, I cannot reproduce the behavior that you have described. When defining a bean named localeResolver the auto-configured bean with the same name backs off:

  WebMvcAutoConfiguration.EnableWebMvcConfiguration#localeResolver:
      Did not match:
         - @ConditionalOnMissingBean (names: localeResolver; SearchStrategy: all) found beans named localeResolver (OnBeanCondition)

If you would like us to spend some more time investigating, please spend some time providing a complete yet minimal sample that reproduces the problem. You can share it with us by pushing it to a separate repository on GitHub or by zipping it up and attaching it to this issue.

Comment From: snturk

I checked my project and noticed that it was a dependency-related issue. Couldn't solve it at the moment but it was not a bug about this project.