Question

目前我在控制器和服务层之间的Autowire配置中遇到了问题。

日志

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)}

控制器

@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();
    }
}

服务

@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();
    }
}

自动装配由于某种原因无效......“No qualifying bean of type com.ults.hrms.service.EmployeeService。

我也试过了@Component和@Transactional的不同组合。

很抱歉有很多代码，但我不知道会导致该错误的原因。

Answer 1

No qualifying bean of type [com.ults.hrms.service.EmployeeService]的根本原因是autowired属性名称不正确..

更改

@Autowired
EmployeeService employeService;

到

@Autowired
EmployeeService employeeService ;

Answer 2

你可以这样做

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

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

@Service ***（＆＃34; employeService＆＃34;）***这允许您选择在自动装配时使用的名称

在Spring 4中没有类型的限定bean

2 个答案: