Spring MVC annotation error "No adapter for handler - Does your handler implement a supported interface like Controller?"

I have an existing Spring MVC apps written in 2.5.

I wanted to use the new annotation controller. I somewhat see that it is really flexible and would answer my other needs.

My problem is, it seems I cannot mix them both.

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframewo开发者_运维知识库rk.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-2.5.xsd">

    <context:component-scan
            base-package="com.test.web" />

    <bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" />
    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />

    <!-- Controller Mappings Here -->
    <bean id="homeController" class="com.test.web.HomeController">
        <property name="cacheSeconds" value="120" />
    </bean> 

    //other plain old spring mvc controller

When I ran my app and hit the home page, I get below error:

javax.servlet.ServletException: No adapter for handler [com.test.web.HomeController@cca07b]: Does your handler implement a supported interface like Controller?

I am not sure but I think something is conflicting. This is a fairly large Spring MVC apps and I don't want to change those modules that were working already using the old Spring Base Controller.

My goal is to only use the annotation controller on my new enhancement.

You don't need to declare DefaultAnnotationHandlerMapping and AnnotationMethodHandlerAdapter. The context has these registered by default, along with adapters for old-style controllers.

When you declare them explicitly like this, the default ones are removed, and the context will only support the ones you declare.