got declared spring beans in an other spring bean

@Component

public class IServiceCollection {

@Resource
private IService service1;
@Resource
private IService service2;
@Resource
private IService service3;
@Resource
private IService service4;
@Resource
private IService service5;

public List<IService> getAllServices(){
    List<IService>  iServiceList =  new ArrayList<IService>();

    iServiceList.add(service1);
    iServiceList.add(service2);
    return iServiceList;
}

}

in IServiceCollection i will ref lots of IService bean like :service1,servvice2,i wanna get all of the service in method getAllServices().

how can i add all the services to the list automatically ? not like the code below.