春季4中没有任何类型的合格Bean

Question

Currently I'm facing an issue in Autowire configuration between controller and the service layer.

Log

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.ults.hrms.service.EmployeeService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}

Controller

@Controller
@RequestMapping("/")
public class AppController extends ConvertReqDataToJSON {

    final static Logger logger = Logger.getLogger(AppController.class);

    /* creating bean definition in Spring container(DI) */

    @Autowired
    EmployeeService employeService;

    @RequestMapping(value = { "/listuser" }, method = RequestMethod.GET)
    public @ResponseBody List<Employe> listUsers() throws Exception {

        return employeService.findAllUsers();
    }
}

Service

@Service
public class EmployeeService extends GenericDaoImpl<Employe>{

    public List<Employe> findAllUsers() throws Exception {
        return findAllUsers();
    }
}
GenericDao

@SuppressWarnings("unchecked")
@Transactional
@Repository
public abstract class GenericDaoImpl<T> implements IGenericDao<T> {

    protected Class<T> entityClass;

    @Autowired
    private SessionFactory sessionFactory;

public T findAll() throws Exception{
        Criteria criteria =sessionFactory.getCurrentSession().createCriteria(getEntityClass()).addOrder(Order.asc("firstName"));
        criteria.setResultTransformer(Criteria.DISTINCT_ROOT_ENTITY);
        return (T) criteria.list();
    }
}

Autowiring doesnt work for some reason... " No qualifying bean of type com.ults.hrms.service.EmployeeService .

I've tried with different combinations of @Component and @Transactional too.

Sorry for a lot of code, but I don't know what can cause that error anymore.

Answer 1

The root cause of No qualifying bean of type [com.ults.hrms.service.EmployeeService] is that the autowired property name is not correct..

change

@Autowired
EmployeeService employeService;

to

@Autowired
EmployeeService employeeService ;

Answer 2

You can do like this

@Service("employeService")
public class EmployeeService extends GenericDaoImpl<Employe>{

    public List<Employe> findAllUsers() throws Exception {
        return findAllUsers();
    }
}

@Service***("employeService")*** this allows you to choose the name you are going to use while autowiring