Question

我用scala编写的简单spring mvc控制器有问题：

@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"
  }
}

当我尝试访问/hello.html时，我收到了异常：

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)

但是当我删除@Transactional注释时 - 一切正常!! Spring无法找到带有两个注释的请求映射？我的applicationContext.xml片段：

 <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/>

修改

使用动态代理应用事务方面，它阻止Spring MVC访问目标类上的@RequestMapping注释解决方案：

    <tx:annotation-driven proxy-target-class="true"/>

Answer 1

尝试将<context:annotation-config />添加到applicationContext.xml，看看是否能解决问题。

Answer 2

声明以下bean。这应该解决问题

<bean id="simpleHandler" class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>

一旦找到根本原因，

会更新你的信息。

Spring MVC中没有适配器的适配器

2 个答案: