java - 当前线程中不存在具有范围类型注释 @RequestScoped 的 WebBeans 上下文

Question

我在 TomEE 服务器上使用 OpenJPA。

我构建了我的 .war，将其部署在服务器上，但是当我使用我的应用程序打开页面时，我收到此执行:

javax.servlet.ServletException: WebBeans context with scope type annotation @RequestScoped does not exist within current thread
  javax.faces.webapp.FacesServlet.service(FacesServlet.java:229)
  filters.NoCacheFilter.doFilter(NoCacheFilter.java:42)
  org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:98)
  com.ocpsoft.pretty.PrettyFilter.doFilter(PrettyFilter.java:145)


javax.enterprise.context.ContextNotActiveException: WebBeans context with scope type annotation @RequestScoped does not exist within current thread
  org.apache.webbeans.container.BeanManagerImpl.getContext(BeanManagerImpl.java:351)
  org.apache.webbeans.intercept.NormalScopedBeanInterceptorHandler.getContextualCreationalContext(NormalScopedBeanInterceptorHandler.java:169)
  org.apache.webbeans.web.intercept.RequestScopedBeanInterceptorHandler.getContextualInstance(RequestScopedBeanInterceptorHandler.java:79)
  org.apache.webbeans.intercept.NormalScopedBeanInterceptorHandler.invoke(NormalScopedBeanInterceptorHandler.java:114)
  org.apache.webbeans.intercept.NormalScopedBeanInterceptorHandler.invoke(NormalScopedBeanInterceptorHandler.java:108)
  org.apache.webbeans.conversation.ConversationImpl_$$_javassist_0.isTransient(ConversationImpl_$$_javassist_0.java)
  org.apache.webbeans.jsf.WebBeansPhaseListener.beforePhase(WebBeansPhaseListener.java:106)
  org.apache.myfaces.lifecycle.PhaseListenerManager.informPhaseListenersBefore(PhaseListenerManager.java:77)
  org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:158)
  org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
  javax.faces.webapp.FacesServlet.service(FacesServlet.java:197)
  filters.NoCacheFilter.doFilter(NoCacheFilter.java:42)
  org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:98)
  com.ocpsoft.pretty.PrettyFilter.doFilter(PrettyFilter.java:145)

Answer 1

好的，我找到问题所在了。

首先，我必须阅读启动 TomEE 服务器的日志。我发现我的 EJB 类之一有问题。我用事务管理器注入(inject)资源:

   @Resource
   private UserTransaction userTransaction;

但我忘记通过以下方式注释我的服务 EJB:

@Stateless
@TransactionManagement(TransactionManagementType.BEAN)
public class TaskService {
  ...
}