Spring individual context not inheriting root context - spring-mvc

Question

I have two context xml resides in WEB-INF folder; applicationContext.xml and app-servlet.xml. I declare this in app-servlet.xml
<context:component-scan base-package="com.training.hibernate.controller"/>
and this in applicationContext.xml
<context:component-scan base-package="com.training.hibernate.services"/>
<context:component-scan base-package="com.training.hibernate.dao"/>
I got this error
BeanCreationException: Error creating bean with name 'personController': Injection of autowired dependencies failed;
If I move the component scanning of services and dao in app-servlet.xml, I got no error. I assume the app-servlet.xml is not inheriting the applicationContext.xml
This is my web.xml
<?xml version="1.0" encoding="ISO-8859-1" ?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
version="2.4">
<display-name>Spring Web Application</display-name>
<servlet>
<servlet-name>app</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>app</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>

Answer 1

Here is some direction I can help you with to clarify different contexts. There are two main contexts usually in a Spring based web app :
Application Context : The context which contains the beans like services,dao etc.
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
classpath:spring-config/applicationContext.xml
</param-value>
</context-param>
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
And then there is dispatcher servlet's context. This contains web specific beans . This context has access to beans defined via ContextLoaderListener above.
<servlet>
<servlet-name>app</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>
classpath:spring-config/app-servlet.xml
</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
Please verify, you have got this right.