java - localeChangeInterceptor does not work -

i have standard configuration, kept editing many times, checked other questions on final configuration people had issues resolved, no result me. whenever firing requests like:

http://localhost:8080/appname/?lang=es_mx

or

http://localhost:8080/appname?lang=es_mx not resolve correct locale, nothing.

<bean id="messagesource" class="org.springframework.context.support.reloadableresourcebundlemessagesource">         <property name="basename" value="/web-inf/messages" />     </bean>       <bean id="localeresolver" class="org.springframework.web.servlet.i18n.sessionlocaleresolver"></bean>        <mvc:interceptors>         <bean class="org.springframework.web.servlet.i18n.localechangeinterceptor">             <property name="paramname" value="lang" />         </bean>     </mvc:interceptors> 

i know default locale resolver headers work messageresource , .jsp configuration correct, since set 1 browser explicitly have es_mx locale , resolves acceptheaderlocaleresolver correctly.

does have way handler mappings defined?

@requestmapping(value = "/", method = requestmethod.get) public string home( model model, locale locale, httpservletrequest hr) {      string header = hr.getheader("user-agent");     model.addattribute("header", header);     string contextpath = hr.getcontextpath();     model.addattribute("contextpath", contextpath);      return "index"; } 

god spent time on this...please help

i solved placing interceptor servlet-context.xml instead of other config. trying figure out why in servlet-context.xml works , in dedicated config doesn't, insights valuable ! :-) i not accepting answer, since not explain why. please explain me why case(and test - ideally resulting in interceptor being placed in custom config).

for in trouble try this:

<interceptors>         <beans:bean             class="org.springframework.web.servlet.i18n.localechangeinterceptor"             p:paramname="lang" /> </interceptors> 

inside servlet-context.xml

needs namespace:

 xmlns:p="http://www.springframework.org/schema/p"  

sessionlocaleresolver seems not care location , works in custom config location too.