Autowiring Class Issue (argument type mismatch)

[anyz]

I have a Interface:

public interface IGenericDAO

and a implementing abstract class:

@Repository
public abstract class  GenericDAOImpl implements IGenericDAO

Then there are class that extends the abstract class like:

@Repository
public class ClientDAO extends GenericDAOImpl

When i try to autowire ClientDAO into serverice as below:

@Component
public class ClientServiceImpl implements ClientService{
	private ClientDAO clientDAO;
	@Autowired
	public void setClientDAO(Object clientDAO) {
		this.clientDAO = clientDAO;
	}

It throws exception below:

Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire method: 
public void com.xxx.service.impl.ClientServiceImpl.setClientDao(com.xxx.dao.ClientDAO); 
nested exception is java.lang.IllegalArgumentException: argument type mismatch

[anyz]

Just get it fixed. I aspect applied as:
<aop:aspectj-autoproxy/>

therefore marking it as :
<aop:aspectj-autoproxy proxy-target-class = "true"/>

fixes the issue.

[Enrico Pizzi]

You don't have to force classproxies to resolve this issue.
Just use proper javabean setter specification (make the setter argument match the return type):

private ClientDAO clientDAO;
	@Autowired
	public void setClientDAO(ClientDAO clientDAO) {
		this.clientDAO = clientDAO;
	}

or get rid of the setter altogether and autowire directly on the class variable:

@Autowired
private ClientDAO clientDAO;

[anyz]

I removed all setters and put @Autowired on variables. However this doesn't solve issue until class proxies are applied.