JBoss 6 上的 @Stateless 和应用程序启动问题

Question

我创建了一个仅包含一个类的 Java Web 项目。如果我编译 WAR 并将其部署到 JBoss，一切都会正常。但是，如果我将类设置为 @Stateless，JBoss 部署将失败并出现错误。

java.lang.IllegalArgumentException: EntityManagerFactory cannot be null

我（现在）确信我一定做了一些非常愚蠢的事情，但我看不出我的问题是什么。

更新：必须与我所获得的安装有关。在 JBoss 6 的本地安装上运行良好。

更大的 stacke 跟踪引用：

2012-01-28 01:43:54,913 INFO  [org.jboss.ejb3.deployers.JBossASKernel] (HDScanner) installing bean: jboss.j2ee:jar=JanTest.war,name=Service,service=EJB3
2012-01-28 01:43:54,914 INFO  [org.jboss.ejb3.deployers.JBossASKernel] (HDScanner)   with dependencies:
2012-01-28 01:43:54,914 INFO  [org.jboss.ejb3.deployers.JBossASKernel] (HDScanner)   and demands:
2012-01-28 01:43:54,914 INFO  [org.jboss.ejb3.deployers.JBossASKernel] (HDScanner)  jboss-injector:topLevelUnit=JanTest.war,unit=JanTest.war,bean=Service,interceptor=org.jboss.weld.integration.ejb.SessionBeanInterceptor; Required: Described
2012-01-28 01:43:54,914 INFO  [org.jboss.ejb3.deployers.JBossASKernel] (HDScanner)  jboss.ejb:service=EJBTimerService; Required: Described
2012-01-28 01:43:54,914 INFO  [org.jboss.ejb3.deployers.JBossASKernel] (HDScanner)  jboss-injector:topLevelUnit=JanTest.war,unit=JanTest.war,bean=Service,interceptor=org.jboss.weld.integration.ejb.interceptor.Jsr299BindingsInterceptor; Required: Described
2012-01-28 01:43:54,914 INFO  [org.jboss.ejb3.deployers.JBossASKernel] (HDScanner)  jboss-switchboard:appName=JanTest,module=JanTest; Required: Create
2012-01-28 01:43:54,915 INFO  [org.jboss.ejb3.deployers.JBossASKernel] (HDScanner)   and supplies:
2012-01-28 01:43:54,915 INFO  [org.jboss.ejb3.deployers.JBossASKernel] (HDScanner)  jndi:Service
2012-01-28 01:43:54,915 INFO  [org.jboss.ejb3.deployers.JBossASKernel] (HDScanner) Added bean(jboss.j2ee:jar=JanTest.war,name=Service,service=EJB3) to KernelDeployment of: JanTest.war
2012-01-28 01:43:55,175 INFO  [org.jboss.web.tomcat.service.deployers.TomcatDeployment] (HDScanner) deploy, ctxPath=/JanTest
2012-01-28 01:43:55,318 ERROR [org.jboss.kernel.plugins.dependency.AbstractKernelController] (HDScanner) Error installing to Create: name=jboss.j2ee:jar=JanTest.war,name=Service,service=EJB3 state=Configured: java.lang.IllegalArgumentException: EntityManagerFactory cannot be null
    at org.jboss.ejb3.timerservice.mk2.TimerServiceImpl.<init>(TimerServiceImpl.java:139) [:1.0.0-alpha-13]
    at org.jboss.ejb3.timerservice.mk2.TimerServiceFactoryImpl.createTimerService(TimerServiceFactoryImpl.java:79) [:1.0.0-alpha-13]
    at org.jboss.ejb3.TimerServiceContainer.createTimerService(TimerServiceContainer.java:234) [:1.7 ......

Answer 1

该问题仅发生在 JBoss 的特定安装中。本地安装运行良好。如果我找到错误的原因，我会发表评论。