是否可以创建多个同名的 spring bean（来自不同的接口）？

Question

I'm trying to create the following structure:

public interface A {string calculateA(){....}}

@Service("policy1")
public class APolicy1 implements A {
  @Override
  public String calculateA(){...}
}

@Service("policy2")
public class APolicy2 implements A {
  @Override
  public String calculateA(){...}
}

and another interface

 public interface B{string calculateB(){....}}

@Service("policy1")
public class BPolicy1 implements B{
  @Override
  public String calculateB(){...}
}

@Service("policy2")
public class BPolicy2 implements B{
  @Override
  public String calculateB(){...}
}

and the classes that uses these beans:

@service
@Primary
public class Arouter implements A{
   @Autowired
   Map<String, A> AServices;

   @Autowired
   PolicyResolver policyResolver;

   @Override
   public String calculateA(){
     String policy = policyResolver.getPolicy();
     AServices.get(policy).CalculateA();
}

@service
@Primary
public class Brouter Implements B{
   @Autowired
   Map<String, B> AServices;

   @Autowired
   PolicyResolver policyResolver;

   @Override
   public String calculateB(){
     String policy = policyResolver.getPolicy();
     AServices.get(policy).CalculateB();
}

note: the idea here is to delegate to the correct business logic by some kind of policy for example, if i'm running in policy a context and need to trigger Service B, then the router will call BPolicy2 method.

but I'm getting:

org.springframework.context.annotation.ConflictingBeanDefinitionException: Annotation-specified bean name 'policy1' for bean class [...apackage.APolicy1] conflicts with existing, non-compatible bean definition of same name and class [...bpackage.BPolicy1]

I would expect that since these are different bean types I would be able to give them the same name

edit: I have a solution: add a prefix to the beans the name and the routers will add the prefix to the policyResolver return value, but I'm it's less elegant

Answer 1

@qualifier annotation can be used to differentiate between different beans.

Here is a link with small example of @qualifier annotation usage in Spring :

https://memorynotfound.com/handling-multiple-autowire-dependencies-with-spring-qualifier/