Dwr3+Spring2.5消息推送报Error

使用http://127.0.0.1:8080/huyiqu/dwr对生成的messagePush.js进行测试时，Dwr能正确生成messagePush.js，但不能访问里面的public void sendMessageAuto(String recvCustomerId,String message)方法，访问就弹出框Error!但我不用spring配置Dwr却可以消息推送。代码如下： 
<dwr> 
    <allow> 
         <create javascript="messagePush" creator="spring"> 
            <param name="beanName value="messagePush"></param> 
         </create> 
       <!-- 
         <create creator="new" javascript="messagePush"> 
            <param name="class" value="com.huyiqu.service.message.impl.MessagePushImpl"/> 
         </create> 
       --> 
      </allow> 
</dwr> 
spring配置： 
<bean id="messagePush" class="com.huyiqu.service.message.impl.MessagePushImpl"> 
</bean> 
web.xml配置： 
<!-- dwr start --> 
<servlet> 
<servlet-name>dwr-invoker</servlet-name> 
<servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class> 
  <init-param>      
    <param-name>config</param-name>         
    <!-- 如果有多个用","分开 -->           
    <param-value>/WEB-INF/dwr.xml</param-value>        
</init-param> 
<init-param> 
<param-name>crossDomainSessionSecurity</param-name> 
<param-value>false</param-value> 
</init-param> 
<init-param> 
<param-name>allowScriptTagRemoting</param-name> 
<param-value>true</param-value> 
</init-param> 
<init-param> 
<param-name>classes</param-name> 
<param-value>java.lang.Object</param-value> 
</init-param> 
<init-param> 
<param-name>activeReverseAjaxEnabled</param-name> 
<param-value>true</param-value> 
</init-param> 
<init-param> 
<param-name>initApplicationScopeCreatorsAtStartup</param-name> 
<param-value>true</param-value> 
</init-param> 
<init-param> 
<param-name>maxWaitAfterWrite</param-name> 
<param-value>1000</param-value> 
</init-param> 
<init-param> 
<param-name>debug</param-name> 
<param-value>true</param-value> 
</init-param> 
<init-param> 
<param-name>logLevel</param-name> 
<param-value>WARN</param-value> 
</init-param> 
</servlet> 
<servlet-mapping> 
<servlet-name>dwr-invoker</servlet-name> 
<url-pattern>/dwr/*</url-pattern> 
</servlet-mapping> 
<!-- dwr end --> 
麻烦各位大手能帮忙看下，这是什么问题，我找半天了。。谢谢 
springdwrjavascript