It could be a problem with the view resolver order, if you want to give priority to tiles view resolver then add order property for the view resolvers
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
<property name="order" value="2"/>
</bean>
<bean id="TilesViewResolver" class="org.springframework.web.servlet.view.ResourceBundleViewResolver" p:basename="views" p:order="1"/>