泛型的依赖注入

准备两个bean

public abstract class baseDao {
    public abstract void save();
}

@Repository
public class RoleDao extends baseDao {
    @Override
    public void save() {
        System.out.println("角色保存 roleDao");
    }
}

@Repository
public class UserDao extends baseDao{
    @Override
    public void save() {
        System.out.println("用户保存 userDao");
    }
}

public class baseService {
    @Autowired
    private baseDao baseDao;
    public void save() {
        baseDao.save();
    }
}

@Service
public class RoleService extends baseService{
}

@Service
public class UserService extends baseService {
}