How to configure multi-module projects in Spring without repeating yml config file props?

Question

I have three projects. Proj 3 depends on Proj 2 and Proj 2 depends on Proj 1. Each project uses Spring Boot and is configured with yml files. I don't want to repeat the yml configuration of Proj 1 in Proj 2. Likewise, I don't want to repeat the in yml config of Proj 2 and Proj 1 in Proj 3.

How can this be done? As far as I know, I can only have one application.yml file (in use) across all three project.

Answer 1

I tried to change my .properties to .yml and It works for me.

@Configuration
public class AppConfig {

    @Profile("staging")
    @Bean
    public static PropertySourcesPlaceholderConfigurer properties() {
        PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer = new PropertySourcesPlaceholderConfigurer();
        YamlPropertiesFactoryBean yaml = new YamlPropertiesFactoryBean();
        yaml.setResources(new ClassPathResource("common-staging.yml"));
        propertySourcesPlaceholderConfigurer.setProperties(yaml.getObject());
        return propertySourcesPlaceholderConfigurer;
    }
}