txk
2018-08-12 16:56
Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'demoService': Unsatisfied dependency expressed through field 'userDao'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.dao.UserDao' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
NoSuchBeanDefinitionException:No qualifying bean of type 'com.dao.UserDao' available
com.dao.UserDao类型的Bean不可用,说明Spring在其IOC容器中找不到该类型的Bean,所以当demoService依赖UserDao时就会出错,可能是UserDao没有加@Component交给Spring IOC容器托管。
可能不太正确,只是根据报错信息猜的,希望对你有帮助。
探秘Spring AOP
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