Q:

Controller exclusion does not work

I have 2 artifacts which are included to main project. The first one contains package "com.parent.controller". The second - "com.child.controller". 
Each package contains one contoller - ParentController and ChildContoller, respectively. Both of them have the same RequestMapping (for example just "/abc"). Also I have included exlude filter for ParentController. But in any case I have an exception:
java.lang.IllegalStateException: Ambiguous mapping. How to fix it?
@SpringBootConfiguration
@EnableAutoConfiguration
@EntityScan(basePackages = {"com.parent", "com.child"})
@ComponentScan(basePackages = {"com.parent", "com.child"}, excludeFilters = {
    @ComponentScan.Filter(type = FilterType.CUSTOM, classes = TypeExcludeFilter.class),
    @ComponentScan.Filter(type = FilterType.CUSTOM, classes = AutoConfigurationExcludeFilter.class),
    @ComponentScan.Filter(type = FilterType.REGEX, pattern = "com\\.parent\\..*Controller"),
    @ComponentScan.Filter(type = FilterType.ASSIGNABLE_TYPE, classes = ParentController.class)
})

UPD 1. The packages hierarchy:    
- com
  - parent
    - controller
      - ParentController
    - service
    - dao
    - entity
  - child
    - controller
      - ChildController
    - service
    - dao
    - entity

A:

Don't scan com.parent root package. Scan each sub package separately, like com.parent.entities.  Won't need the exclude then.
If that doesn't work, post the parent and child package hierarchy for specific instructions.

