Spring MVC with multiple view resolvers

Question

I tried to use 2 view resolvers:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans     
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <context:component-scan base-package="com.evgeni.dfr.controller" />

    <context:annotation-config />
    <mvc:annotation-driven />

    <bean id="viewResolver"
        class="org.springframework.web.servlet.view.UrlBasedViewResolver">
        <property name="cache" value="false" />
        <property name="viewClass" value="com.evgeni.drf.faces.FacesView" />
        <property name="prefix" value="/WEB-INF/pages/" />
        <property name="suffix" value=".xhtml" />

        <property name="order" value="1" />
    </bean>

    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix">
            <value>/WEB-INF/views/</value>
        </property>
        <property name="suffix">
            <value>.jsp</value>
        </property>
        <property name="order" value="0" />
    </bean>
</beans>

The application always uses only the one with the lowest order and not the other. In the current case if my controller return "someView" the app will respond with The requested resource (/MyProject/WEB-INF/views/someView.jsp) is not available. even if there is "pages/someView.xhtml".

Spring version - 3.2.3

Edit: If I have 2 methods in controller and methodA returns "viewA" and methodB returns "viewB". And we have viewA.jsp in 'views' folder and viewB.xhtml in 'pages'.

Case1: UrlBasedViewResolver -> order=1,InternalResourceViewResolver -> order=2

methodA -> The requested resource (/MyProject/WEB-INF/pages/viewA.xhtml) is not available.;

methodB -> OK

Case2: UrlBasedViewResolver -> order=2,InternalResourceViewResolver -> order=1

methodA -> OK ;

methodB -> `The requested resource (/MyProject/WEB-INF/views/viewB.jsp) is not available.`;

Logbook

Answer 1

I think you misunderstood the order priority. The ViewResolver with the highest order is the last resolver in the chain. Since you gave the InternalResourceViewResolver an order of 0, it will be the first resolver in the chain and the InternalResourceViewResolver will resolve the view whatever view name is returned. So, if you want multiple resolvers, the InternalResourceViewResolver must be the resolver with the highest order.

Change the InternalResourceViewResolver order value to 2 :

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans     
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <context:component-scan base-package="com.evgeni.dfr.controller" />

    <context:annotation-config />
    <mvc:annotation-driven />

    <bean id="viewResolver"
        class="org.springframework.web.servlet.view.UrlBasedViewResolver">
        <property name="cache" value="false" />
        <property name="viewClass" value="com.evgeni.drf.faces.FacesView" />
        <property name="prefix" value="/WEB-INF/pages/" />
        <property name="suffix" value=".xhtml" />
        <property name="order" value="1" />
    </bean>

    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix">
            <value>/WEB-INF/views/</value>
        </property>
        <property name="suffix">
            <value>.jsp</value>
        </property>
        <property name="order" value="2" />
    </bean>
</beans>

EDIT :

After checking the javadoc, it seems that these two resolvers cannot be chained since the InternalResourceViewResolver is a UrlBasedViewResolver (InternalResourceViewResolver extends UrlBasedViewResolver). Both resolver always match the returned value. I think you will need something custom to be able to do this.

Midinette

Check my edit. What is your use case. Why are you using those two UrlBasedViewResolver. – Midinette

Answer 2

Chage order in InternalResourceViewResolver from 0 to 1. InternalResourceViewResolver must have largest order (lower priority)

Phalanstery

As I explained only the view resolver with the lower order is available. If I do that the app will always search for view in 'pages' with suffix = xhtml and will throw an error if one is not found there... – Logbook