define an applicationContext

Hi,

As newbie, i've a question about an xml that's use for all the application?
For example, now i'm using internationalization on each context

here is a context containing internationalization and mapped with my page user

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
  xmlns:context="http://www.springframework.org/schema/context"
  xsi:schemaLocation="
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org
/schema/context/spring-context-3.0.xsd">

<bean id="messageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
    	<property name="basenames">
			<list>
				<value>classpath:locale/message</value>
			</list>
		</property>
   		<property name="defaultEncoding" value="UTF-8"/>
	</bean>
 
 	<bean id="localeResolver"
		class="org.springframework.web.servlet.i18n.SessionLocaleResolver">
		<property name="defaultLocale" value="fr" />
	</bean>
	<mvc:interceptors>    
        
    	<bean  class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor">    
        	<property name="paramName" value="lang" />    
    	</bean>   
	</mvc:interceptors>
	
  <context:component-scan base-package="com.starterSpring.controller.user" />
  <mvc:resources mapping="/resources/**"
                 location="/resources/" />
  <mvc:annotation-driven />
  
  <bean id="jacksonMessageConverter" class="org.springframework.http.converter.json
.MappingJacksonHttpMessageConverter"></bean>
  <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
	<property name="messageConverters">
	  <list>
	    <ref bean="jacksonMessageConverter"/>
	  </list>
	</property>
  </bean>
  
  <bean
    class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/WEB-INF/jsp/user/" />
    <property name="suffix" value=".jsp" />
  </bean>
 
</beans>

An other question about internationalization, how can i know the choosing language in my controller?

thanks for you help