You have to code to an interface, and not to the concrete class/implementation. Spring doesn't inject an object of your class, but in place injects a proxy to your class. This is needed for Aspect Oriented Programming (AOP). The proxy implements the interfaces that your class implements, but is not an instance of your class. Just code to the interface, and your problem should be solved (I guess). Another thing that might solve the problem is to add the following line to your bean definition
Of course you'll need to add the aop name-space to your XML file. As I have said that the second solution might solve the problem, but I do not guarantee this. We have used this to solve a similar problem with DWR, but that's another story.
It looks like you already have an interface for the ActorModelService (which probably extends IService<DefaultActorModel, Long>).
If so, you should make the ActorModelService class implement the IActorModelService (so it will have the same interace as your declared service bean).
And then use: