E ae minha gente.
Achei meio chato integrar o spring mvc com o dwr.
Como não achei uma solução rapida, vai uma solução.
No meu web.xml ta assim:
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>*.html</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>/dwr/*</url-pattern>
</servlet-mapping>
no spring-servlet.xml
<?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:jee="http://www.springframework.org/schema/jee"
xmlns:dwr="http://www.directwebremoting.org/schema/spring-dwr"
xsi:schemaLocation="
http://www.directwebremoting.org/schema/spring-dwr http://www.directwebremoting.org/schema/spring-dwr-2.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.0.xsd">
<dwr:controller id="dwrController" debug="true" />
<bean id="handlerMapping"
class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="alwaysUseFullPath" value="true"/>
<property name="mappings">
<props>
<prop key="/dwr/**/*">dwrController</prop>
</property>
</bean>
</beans>
Assim, consigo acessar a pagina de teste do dwr digitando url completa http://localhost/meuSite/dwr/index.html.
Atenção: não funciona http://localhost/meuSite/dwr/
t+