How to set @PropertySource with value read from VM argument maven spring boot

How to set @PropertySource with value read from VM argument maven spring boot

The VM options that I use -Dprofile.active=t1

To run the application : mvn exec: java -Dprofile.active=t1

My intention is to make use of the profile.active value to dynamically select the properties file.

In order to resolve ${...} placeholders in definitions or @Value annotations using properties from a PropertySource, one must register a PropertySourcesPlaceholderConfigure

@SpringBootApplication@PropertySource
("classpath:/conf/${profile.active}.properties")
public class SpringExternalWsApplication {

   public static void main(String[] args) {
      //Setting the default properties     
 propertySourcesPlaceholderConfigurer().setProperties(System.getProperties());      
SpringApplication.run(SpringExternalWsApplication.class, args);      
   }


   @Bean   public static PropertySourcesPlaceholderConfigurer 
propertySourcesPlaceholderConfigurer() {
      PropertySourcesPlaceholderConfigurer 
propertySourcesPlaceholderConfigurer = new 
PropertySourcesPlaceholderConfigurer();      
return propertySourcesPlaceholderConfigurer;   }

}