抛出异常
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'adminService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private pers.zww.grad.dao.IAdminDao pers.zww.grad.service.impl.AdminServiceImpl.adminDao; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [pers.zww.grad.dao.IAdminDao] 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), @org.springframework.beans.factory.annotation.Qualifier(value=adminDao)}
此为自动生成的Mapper,我加了注解@Repository
package pers.zww.grad.dao;
import org.springframework.stereotype.Repository;
import pers.zww.grad.vo.Admin;
@Repository("adminDao")
public interface IAdminDao {
int deleteByPrimaryKey(String id);
int insert(Admin record);
int insertSelective(Admin record);
Admin selectByPrimaryKey(String id);
int updateByPrimaryKeySelective(Admin record);
int updateByPrimaryKey(Admin record);
Integer getCountByName(String name);
Integer getCountByNameAndPass(String name,String password);
}
这是Service里面注入
package pers.zww.grad.service.impl;
、、、
@Service("adminService")
public class AdminServiceImpl implements IAdminService {
@Autowired
@Qualifier("adminDao")
private IAdminDao adminDao;
@Override
public int deleteByPrimaryKey(String id) {
// TODO Auto-generated method stub
return 0;
}
配置文件都已扫描过了,而且相关mybatis的如下:
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!-- 自动扫描mapping.xml文件 -->
<property name="mapperLocations" value="classpath:pers/zww/grad/mapping/*.xml"></property>
</bean>
<!-- DAO接口所在包名,Spring会自动查找其下的类 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="pers.zww.grad.dao" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean>
自动扫描的包有没有加进去
<!-- 对web包中的所有类进行扫描,以完成Bean创建和自动依赖注入的功能 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="typeAliasesPackage">
<value>
pers.zww.grad.vo
</value>
</property>
<!-- 自动扫描mapping.xml文件 -->
<property name="mapperLocations" value="classpath:pers/zww/grad/mapping/*.xml"></property>
</bean>
你的注解加到实现类中,不要加接口类
@Repository("adminDao")为什么注解在接口上呢
<context:component-scan base-package="pers.zww.grad.*">
只写pers.zww.grad试下,我自己的工程加上.*后就报找不到bean了,可能是不支持这样写。
另外@Autowired默认按照类型注入,可以不指定bean的名称。
估计是包扫描的问题吧,,
问题已解决,谢谢大家。
大哥你这个问题解决了么,我遇到了,求教
我也想知道,我的也是不能注入呢,不是不需要实现么