Implementing Spring MVC Controller using annotation as well as implementing Controller

Question

This may be trivial. But I didn't get any info on this.

Can we have an annotated Controller implementation class and a Controller implementation class that implements Controller interface(or extends AbstractController) in the same web application?

If so what is the way to do it.

I tried writing the following spring context, but the class that implements Controller was never loaded

    <?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:lang="http://www.springframework.org/schema/lang"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd 
    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd  
        http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-3.0.xsd  
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">



    <bean name="/home.htm" class="com.dell.library.web.HomePageController">
        <property name="library" ref="library" />
    </bean>

    <context:component-scan base-package="com.dell.library.web.anot" />
    <mvc:annotation-driven />

    <bean id="viewResolver"
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix">
            <value>/WEB-INF/jsp/</value>
        </property>
        <property name="suffix">
            <value>.jsp</value>
        </property>
    </bean>

</beans>

In my case the HomePageController is never loaded. Is this the right way?

Thanks Dhanush

axtavt · Accepted Answer · 2011-04-14 09:11:26Z

3

<mvc:annotation-driven> effectively disables old controllers. You need to enable them by declaring

<bean class = "org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping" />
<bean class = "org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter" />

UPDATE: Functionality of DispatcherServlet is controlled by sevaral kinds of strategy classes. In particular, HandlerMapping defines a way to map URLs onto controllers, and HandlerAdapter defines a way to perform a call of particular controller.

So, lines above declare strategies that enable mapping URLs onto bean names and calling Controller classes. Actually, there strategies are enabled by default, but only if no other strategies are declared explicitly. Since <mvc:annotation-driven> declares in own strategies explicitly, you need to declare these beans explicitly as well.

Also see DispatcherServlet javadoc.

edited Apr 14, 2011 at 9:11

answered Apr 14, 2011 at 8:43

axtavt

243k42 gold badges518 silver badges486 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Dhanush Gopinath Over a year ago

Thanks. That Worked. What does those two entries do in this case?

Dhanush Gopinath Over a year ago

@Bozho - I could't upvote it since I didn't have enough reputation (15 is needed to upvote). I am a newbie in SO

Bozho Over a year ago

@dhanush yes, I'm aware of that, don't worry. That's why I upvote it :)

Collectives™ on Stack Overflow

Implementing Spring MVC Controller using annotation as well as implementing Controller

1 Answer 1

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related