3 Replies Latest reply on Apr 13, 2007 1:31 PM by Eric R

    Dependency injection @EJB throws NullPointerException

    Tomas Mika Newbie

      Hi,

      before I updated to Jboss 4.0.5 GA (from 4.0.4), my injection in any @Session bean worked fine (both beans are located in the same ejb3 package):

      @EJB
      CarControllerLocal carController;
      


      But after I updated to JBoss 4.0.5, it throws (see bellow) an NullPointerException.

      Does anyone know, where is the problem? Is the problem with the new Jboss, or with the dependences?

      10:44:37,297 ERROR [[Faces Servlet]] Servlet.service() for servlet Faces Servlet threw exception
      javax.faces.FacesException: Error calling action method of component with id fuellingEdit_form:editFuelling_form:footer:insert
       at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:69)
       at javax.faces.component.UICommand.broadcast(UICommand.java:106)
       at javax.faces.component.UIViewRoot._broadcastForPhase(UIViewRoot.java:94)
       at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:168)
       at org.apache.myfaces.lifecycle.InvokeApplicationExecutor.execute(InvokeApplicationExecutor.java:29)
       at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:92)
       at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:67)
       at javax.faces.webapp.FacesServlet.service(FacesServlet.java:137)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:147)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
       at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
       at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
       at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
       at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
       at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
       at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
       at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
       at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
       at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
       at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
       at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
       at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
       at java.lang.Thread.run(Unknown Source)
      Caused by: javax.faces.el.EvaluationException: Exception while invoking expression #{fuellingBean.insertAction}
       at org.apache.myfaces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:153)
       at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:58)
       ... 29 more
      Caused by: javax.ejb.EJBException: java.lang.NullPointerException
       at cz.timony.carConsumption.ejb.request.car.FuellingControllerBean.storeFuelling(FuellingControllerBean.java:84)
       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
       at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
       at java.lang.reflect.Method.invoke(Unknown Source)
       at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:112)
       at org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:166)
       at org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3InterceptorsInterceptor.java:63)
       at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
       at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:54)
       at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
       at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
       at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
       at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79)
       at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:197)
       at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
       at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
       at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
       at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:62)
       at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
       at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:78)
       at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
       at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47)
       at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
       at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
       at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
       at org.jboss.ejb3.stateless.StatelessContainer.localInvoke(StatelessContainer.java:181)
       at org.jboss.ejb3.stateless.StatelessLocalProxy.invoke(StatelessLocalProxy.java:79)
       at $Proxy105.storeFuelling(Unknown Source)
       at cz.timony.carConsumption.web.beans.car.FuellingBean.insertAction(FuellingBean.java:67)
       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
       at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
       at java.lang.reflect.Method.invoke(Unknown Source)
       at org.apache.myfaces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:129)
       ... 30 more
      Caused by: java.lang.NullPointerException
       at cz.timony.carConsumption.ejb.request.car.FuellingControllerBean.storeFuelling(FuellingControllerBean.java:64)
       ... 64 more
      


      In the ejb modules pom.xml, I use these dependences:

      <dependencies>
       <dependency>
       <groupId>jboss</groupId>
       <artifactId>jboss-ejb3-all</artifactId>
       <version>alpha8</version>
       <scope>provided</scope>
       </dependency>
       <dependency>
       <groupId>jboss</groupId>
       <artifactId>jboss-ejb3x</artifactId>
       <version>1.0</version>
       <scope>provided</scope>
       </dependency>
       <dependency>
       <groupId>javax.persistence</groupId>
       <artifactId>persistence-api</artifactId>
       <version>1.0</version>
       <scope>provided</scope>
       </dependency>
      </dependencies>