The Spring MVC web application context is configured in springmvcsrcmainwebappWEB-INF jboss-as-spring-mvc-context.xml. In addition to adding the org.jboss.springmvc.controller package for auto-detection, support for processing requests using the controller methods annotated with @RequestMapping is configured with the <mvc:annotation-driven /> declaration. Add support for the annotation-based transaction manager; the CatalogDao interface's persist method is annotated with @Transactional. Add a view resolver bean for the org.springframework.web.servlet.view.InternalResourceViewResolver class. It is a best practice to add the view templates, such as catalog.jsp, within the WEB-INF directory so that only the controller has access to them. Add a bean property prefix with the /WEB-INF/views value to resolve the view templates. The jboss-as-spring-mvc-context.xml file is listed in the following code:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
<context:component-scan base-package="org.jboss.springmvc.controller" />
<mvc:annotation-driven />
<!-- Add JPA support -->
<bean id="emf" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="loadTimeWeaver">
<bean class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver" />
</property>
</bean>
<!-- Add Transaction support -->
<bean id="txManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="emf" />
</bean>
<!-- Use @Transaction annotations for managing transactions -->
<tx:annotation-driven transaction-manager="txManager" />
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/" />
<property name="suffix" value=".jsp" />
</bean>
<mvc:resources mapping="/static/**" location="/" />
<mvc:default-servlet-handler />
</beans>The Spring MVC provides two levels of application contexts, the root application context for application-level services and a servlet application context for the servlet-level beans and services. The /META-INF/spring/applicationContext.xml file is configured in web.xml is the root-level application context, and /WEB-INF/jboss-as-spring-mvc-context.xml is the context for DispatcherServlet. The servlet context configuration overrides the root context for beans with the same name.