@Autowired Spring @Component with @ConditionalOnProperty

Can I use @Autowired Spring 4.x @Components with a @ConditionalOnProperty to choose implementations of a Feature based on a featuretoggles.properties file?

public class Controller {
  @Autowired
  private Feature feature;
}

@Component
@ConditionalOnProperty(name = "b", havingValue = "off")
public class A implements Feature {
}

@Component
@ConditionalOnProperty(name = "b", havingValue = "on")
public class B implements Feature {
}

@Configuration
@PropertySource("classpath:featuretoggles.properties")
public class SomeRandomConfig {
}

With a src/main/resources/featuretoggles.properties file:

b = on

(That the name of the toggle "b" and the name of the class "B" match is coincidence; it's not my aim to have these equal, the toggle could have any name.)

This fails to auto-wire feature in the Controller with an UnsatisfiedDependencyException, saying "No qualifying bean of type 'Feature' available: expected at least 1 bean that qualifies as autowire candidate".

I know I can realize this with a @Configuration class that chooses a @Bean depending on the property. But when I do that I have to add a new Configuration class each time I add a feature toggle, and those Configuration classes will be highly similar:

@Configuration
@PropertySource("classpath:featuretoggles.properties")
public class FeatureConfig {

    @Bean
    @ConditionalOnProperty(name = "b", havingValue = "on")
    public Feature useB() {
        return new B();
    }

    @Bean
    @ConditionalOnProperty(name = "b", havingValue = "off")
    public Feature useA() {
        return new A();
    }

}