org.springframework.beans.factory.BeanCreationException_idea nested exception is org.springframework.beans-优快云博客

本文链接：https://blog.youkuaiyun.com/woshimuyi1025/article/details/52016049

本文分析了Spring框架中由于配置错误导致的依赖注入失败问题，具体表现为无法自动装配指定类型的Bean。通过排查发现是由于applicationContext-dao.xml文件中MapperScannerConfigurer的basePackage属性设置不当所致。

Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private cn.yql.mapper.PersonMapperFamily cn.yql.service.impl.PersonServiceImpl.personMapperFamily; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [cn.yql.mapper.PersonMapperFamily] 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)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:514)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:285)
... 37 more

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [cn.yql.mapper.PersonMapperFamily] 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)}

原因:applicationContext-dao.xml中的mapper扫描器配置错误

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<!-- 扫描包路径，如果需要扫描多个包，中间使用半角逗号隔开 -->
		<property name="basePackage" value="cn.yql.mapper"></property>
		<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
	</bean>