I'm using spring MVC (spring version 1.2.1) , i want to use dwr(1.4.1) in my application. I've just configured my application as :

web.xml
    <servlet>
        <servlet-name>dwr-invoker</servlet-name>
        <display-name>DWR Servlet</display-name>
        <servlet-class>uk.ltd.getahead.dwr.DWRServlet</servlet-class>
        <init-param>
           <param-name>debug</param-name>
           <param-value>true</param-value>
        </init-param>
      </servlet>

   <servlet>
      <servlet-name>mainServlet</servlet-name>
      <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
      <load-on-startup>1</load-on-startup>
   </servlet>


    <servlet-mapping>
      <servlet-name>mainServlet</servlet-name>
      <url-pattern>dwr/*</url-pattern>
    </servlet-mapping>



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applicationContext.xml

   <bean id="stateDAO" class="com.realdevelopment.videonary.dao.specific.StateDAO">
      <property name="sessionFactory">
         <ref bean="TECSSessionFactory"/>
      </property>
   </bean>



   <bean id="ajaxUtils" class="com.realdevelopment.videonary.web.utils.AjaxUtils">
          <property name="stateDAO">
              <ref bean="stateDAO"/>
          </property>
      </bean>
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application_servlet.xml

   <bean id="dwrController" class="org.springframework.web.servlet.mvc.ServletWrappingController">
        <property name="servletClass">
            <value>uk.ltd.getahead.dwr.DWRServlet</value>
            <!--<value>org.directwebremoting.servlet.DwrServlet</value>-->
        </property>
        <property name="initParameters">
            <props>
                <prop key="debug">true</prop>
            </props>
        </property>
    </bean>

   <bean id="mainUrlHandler" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
      <property name="alwaysUseFullPath" value="true"/>
      <property name="mappings">
         <props>
            ..............
              ..............
            ..............
           <prop key="dwr/**/*">dwrController</prop>
             <prop key="dwr/**/*">dwrController</prop>
              <prop key="**/*.js">dwrController</prop>
              <prop key="exec/*">dwrController</prop>

         </props>
      </property>
      <property name="interceptors">
         <list>
            <ref bean="clickStreamInterceptor"/>
            <ref bean="openSessionInViewInterceptor"/>
            <ref bean="mainMenuHighlighterInterceptor"/>
            <ref bean="userMenuHighlighterInterceptor"/>
            <ref bean="adminMenuHighlighterInterceptor"/>
         </list>
      </property>
   </bean>


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dwr.xml 
<?xml version="1.0" encoding="UTF-8"?>
http://www.getahead.ltd.uk/dwr/dwr10.dtd">

<dwr>
    <allow>
      <convert
              converter="bean"
              match="com.realdevelopment.videonary.web.utils.AjaxUtils"/>

      <create
              creator="spring"
              javascript="ajaxUtils" class = "uk.ltd.getahead.dwr.create.SpringCreator" >
          <include method="getStateList"/>
          <param name="beanName" value="ajaxUtils"/>
         <!-- nothing's going to change if i comment this line--> 
       <param name="location" value="/WEB-INF/applicationContext.xml"/>

      </create>
  </allow>

</dwr>