Spring Boot: Configuration Class is simply ignored and not loaded

Question

I have the following @Configuration class on the classpath of a few of my @SpringBootApplications:

@Configuration @Import({MainConfig.class, RestConfig.class}) public class ApiConfig {      @Bean     @Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE)     public Client client() throws ExecutionException, InterruptedException {         return service.create(Client.class);     }  } 

I have two services that use this config (with differently named Client classes).

Service 1 starts correctly and loads this config. I can see during start up that a bean of type ApiConfig was eagerly initialized.

Service 2 starts incorrectly: the above configuration class is simply ignored and not initialized.

The services are started in separate JVMs.

Ther services have nearly identical, very small application.properties files:

spring.application.name=xxx-api server.port=0 eureka.name=xxx.api # Only for reading properties from a central location context.initializer.classes=com.package.contextClass 

I'm not even sure what kind of additional information I could write into the question. I have been going through logs for a couple of hours now and see no discernible difference, simply that it plainly ignores my @Configuration class.

Has anyone had this issue before?

Answer 1

The @SpringBootApplication annotation (or, more precisely the inferred @ComponentScan annotation) by default only scans the classpath next to and below the annotated class.

So, your configuration class must be placed next to or in a sub package of you Application class.