SpringMVC: No adapter for handler

Hi, I have problem with simple spring mvc controller written in scala:

Code:

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@Controller
    class HelloWorldController {
   
    implicit def sessionFactory2Session(sf: SessionFactory) = sf.getCurrentSes
    @Autowired
      var sessionFactory: SessionFactory = null
   
    @Transactional
    @RequestMapping(value=Array("/hello.html"),method = Array(RequestMethod.GET,RequestMethod.POST))
    def showHello  = {
   
      val document = new CustomDocument("name","custom")
      sessionFactory.save(document)
      sessionFactory.flush
       
      "helloPage"
      }
    }

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When I tried to access /hello.html I received exception:

Code:

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javax.servlet.ServletException: No adapter for handler: Does your handler implement a supported interface like Controller?
        at org.springframework.web.servlet.DispatcherServlet.getHandlerAdapter(DispatcherServlet.java:951)
        at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:758)
        at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:717)
        at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
        at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)

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But when I removed @Transactional annotation - everything works!!. Spring can't find request mapping with two annotations? My applicationContext.xml fragment:

Code:

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    <bean id="openSessionInViewInterceptor"
          class="org.springframework.orm.hibernate3.support.OpenSessionInViewInterceptor">
        <property name="sessionFactory" ref="sessionFactory"/>
    </bean>
 
    <bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping">
        <property name="interceptors">
            <list><ref bean="openSessionInViewInterceptor"/></list>
        </property>
        <property name="alwaysUseFullPath" value="true" />
    </bean>
    <context:component-scan base-package="scala.hibernate"/>

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

    <!-- for transaction -->
    <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManaager">
          <property name="sessionFactory" ref="sessionFactory"/>
          <property name="dataSource" ref="dataSource"/>
    </bean>
    <tx:annotation-driven/>

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