Spring Couldn't autowired,there is more than one bean of `` type

Spring is confused between the 2 beans you have declared in you configuration class so you can use @Qualifier annotation along with @Autowired to remove the confusion by specifying which exact bean will be wired, apply these modifications on your configuration class

@Configuration
public class SpringConfig {
    @Bean(name="clazzImplA")
    public BaseInterface clazzImplA(){
        return new ClazzImplA();
    }

    @Bean(name="clazzImplB")
    public BaseInterface clazzImplB(){
        return new ClazzImplB();
    }
}

then at @autowired annotation

@Service
@SpringApplicationConfiguration(SpringConfig.class)
public class AutowiredClazz {
    @Autowired
    @Qualifier("the name of the desired bean")
    private BaseInterface baseInterface;

    private AutowiredClazz(BaseInterface baseInterface){
        this.baseInterface = baseInterface;
    }
}

This can not be solved by using spring framework only. You mentioned that based on some logic you need a instance of BaseInterface. This use case can be solved using Factory Pattern. Create A Bean which is actually a factory for BaseInterface

@Component
public class BaseInterfaceFactory{

  @Autowired
  @Qualifier("clazzImplA")
  private BaseInterface baseInterfaceA;

  @Autowired
  @Qualifier("clazzImplb")
  private BaseInterface baseInterfaceB;

  public BaseInterface getInstance(parameters which will decides what type of instance you want){
    // your logic to choose Instance A or Instance B
    return baseInterfaceA or baseInterfaceB
  }

}

Configuration (Shamelessly copied from another comment)

@Configuration
public class SpringConfig {
    @Bean(name="clazzImplA")
    public BaseInterface clazzImplA(){
        return new ClazzImplA();
    }

    @Bean(name="clazzImplB")
    public BaseInterface clazzImplB(){
        return new ClazzImplB();
    }
}

Service class

@Service
@SpringApplicationConfiguration(SpringConfig.class)
public class AutowiredClazz {
    @Autowired
    private BaseInterfaceFactory factory;

    public void someMethod(){
       BaseInterface a = factory.getInstance(some parameters);
       // do whatever with instance a
    }
}