Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private cn.itcast.crm.service.BaseDictService cn.itcast.crm.controller.CustomerController.baseDictService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [cn.itcast.crm.service.BaseDictService] 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)}严重: StandardWrapper.Throwableorg.springframework.beans.factory.BeanCreationException: Error creating bean with name 'customerController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private cn.itcast.crm.service.BaseDictService cn.itcast.crm.controller.CustomerController.baseDictService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [cn.itcast.crm.service.BaseDictService] 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)}
解决问题的思路:
1.如果您使用注释进行配置,则可能会缺少cn.itcast.crm.service.BaseDictService实现的注释(@Service或@Component等)。
2.如果您使用(仅)xml,您可能会错过BaseDictService实现的<bean>定义。
3.如果您使用注释并且实现注释正确,请检查扫描实现所在的包
(检查各自组件的自动扫描组件<context:component-scan base-package = “XXXX”)
或者(Spring自动扫描<context:annotation-config/>)
4.代码有无错误:例子如下,Service类实现接口具有相同申明方法的Mapper接口,都会导致Spring无法识别相应的bean:
public interface BaseDictMapper { //根据类别代码查询数据 List<BaseDict> queryBaseDictByDictTypeCode(String dictTypeCode);}
根据类别代码查询数据 List<BaseDict> queryBaseDictByDictTypeCode(String dictTypeCode);}
public interface BaseDictService { //根据类别代码查询 List<BaseDict> queryBaseDictByDictTypeCode(String dictTypeCode);}
public class BaseDictServiceImpl implements BaseDictMapper { //错误:应该实现为BaseDictService @Autowired private BaseDictMapper baseDictMapper; @Override public List<BaseDict> queryBaseDictByDictTypeCode(String dictTypeCode) { List<BaseDict> list = this.baseDictMapper.queryBaseDictByDictTypeCode(dictTypeCode); return list; }}