Set JSON View Resolver with Spring 4

<bean id="contentNegotiationManager" class="org.springframework.web.accept.ContentNegotiationManagerFactoryBean">
       <property name="favorPathExtension" value="false" />
       <property name="favorParameter" value="true" />
       <property name="parameterName" value="mediaType" />
       <property name="ignoreAcceptHeader" value="false"/>
       <property name="useJaf" value="false"/>
       <property name="defaultContentType" value="application/json" />

       <property name="mediaTypes">
            <map>
                <entry key="json"  value="application/json" />
            </map>
        </property>
</bean>

<bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver" p:order="1">

<property name="contentNegotiationManager" ref="contentNegotiationManager" />
<property name="defaultViews">
<list>
<bean class="org.springframework.web.servlet.view.json.MappingJackson2JsonView" />
</list>
</property>
</bean>