how to set up your spring config to respond to json/xml

json_xml_responder.xml

<!-- Enable annotation scanning. --> 
<context:component-scan base-package="com.matthewjkim.controllers" />
<!-- Map objects to XML. --> 
<bean id="xstreamMarshaller" class="org.springframework.oxm.xstream.XStreamMarshaller" /> 
<bean id="xmlMessageConverter" class="org.springframework.http.converter.xml.MarshallingHttpMessageConverter"> 
  <constructor-arg ref="xstreamMarshaller" /> 
</bean> 
<bean id="jsonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter" />
<!-- Bind the return value of the Rest service to the ResponseBody. -->
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
<property name="messageConverters"> 
<util:list id="beanList"> 
<ref bean="xmlMessageConverter" />
<ref bean="jsonHttpMessageConverter" />
</util:list> 
</property> 
</bean>