multiple packages in context:component-scan, spring config

Question

How can I add multiple packages in spring-servlet.xml file in context:component-scan element?

I have tried

<context:component-scan base-package="z.y.z.service" base-package="x.y.z.controller" /> 

and

<context:component-scan base-package="x.y.z.service, x.y.z.controller" /> 

and

<context:component-scan base-package="x.y.z.service" /> <context:component-scan base-package="x.y.z.controller" /> 

but got error:

org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [x.y.z.dao.daoservice.LoginDAO] found for dependency: 

Answer 1

The following approach is correct:

<context:component-scan base-package="x.y.z.service, x.y.z.controller" />  

Note that the error complains about x.y.z.dao.daoservice.LoginDAO, which is not in the packages mentioned above, perhaps you forgot to add it:

<context:component-scan base-package="x.y.z.service, x.y.z.controller, x.y.z.dao" />  

Answer 2

Annotation Approach

@ComponentScan({ "x.y.z", "x.y.z.dao" })