ContentNegotiatingViewResolver with multiple mediaTypes

I want my restful server to support both json & xml data mapping - currently I am using the JacksonToJson Serializer for the json conversions - how would I define a xml serializer for the same data objects that are used in the json conversion?
my servelt.xml looks like this:

Code:

---

<mvc:annotation-driven />
        <bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
                <property name="mediaTypes">
                          <map>
                          <entry key="json" value="application/json"/>
                      </map>       
                </property> 
                <property name="viewResolvers">
                        <list>
                                <bean class="org.springframework.web.servlet.view.BeanNameViewResolver"/>
                                <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
                                  <property name="viewClass" value="org.springframework.web.servlet.view.JstlView">    </property>
                                  <property name="prefix" value="/WEB-INF/jsp/"/>
                                  <property name="suffix" value=".jsp"/>
                                </bean>
                        </list>
                </property>
        </bean>

---

Thanks