Spring MVC：如何从自定义接口实现DAO

Question

我的目的是实现自定义DAO接口，这就是我所做的，但它似乎不起作用。

我的界面：

public interface AbstractDAO<T> { 

    void add(T object); 
    T load(Integer ID); 
    List<T> list(); 
    void update(T object); 
    void delete(Integer ID); 
} 

而且它的实现：

@Repository 
public class AccountDAO implements AbstractDAO<Account> { 

    @Autowired 
    private JdbcTemplate jdbcTemplate; 

    @Transactional 
    public void add(Account object) { 
     ... 
    } 
... 
} 

因为我告诉，这是行不通的，由于春天扫描器无法找到DAO类。

如何让这项工作？没有implements它工作正常。

春扫描仪配置：

<bean ...> 
    <context:component-scan base-package="dao" /> 
    <context:component-scan base-package="tmp" /> 
    <context:component-scan base-package="services" /> 
    <context:component-scan base-package="entities" /> 

    <mvc:resources mapping="/resources/**" location="/resources/" /> 

    <mvc:annotation-driven /> 
    <tx:annotation-driven /> 
    <task:annotation-driven /> 

    <import resource="spring-beans.xml"/> 
</bean> 

错误：

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: 
No qualifying bean of type [dao.AccountDAO] found for dependency: expected 
at least 1 bean which qualifies as autowire candidate for this dependency 

Answer 1

更改DAO实施：

@Repository("accountDAO") 
public class AccountDAO implements AbstractDAO<Account> { 

    @Autowired 
    private JdbcTemplate jdbcTemplate; 

    @Transactional 
    public void add(Account object) { 
     ... 
    } 
    ... 
} 

和使用的DAO像：

@Controller 
@RequestMapping(value = "") 
public class Controller 

    @Autowired 
    @Qualifier("accountDAO") 
    private AbstractDAO accountDAO; 

    ..... 
}