Finally I got it working by commenting the viewClass line inside the InternalResourceViewResolver.
The final code is as follows:
<!-- JSP View Resolver -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" /> -->
<property name="prefix" value="/pages/" />
<property name="suffix" value=".jsp" />
<property name="order" value="1" />