[jboss-user] [EJB 3.0] - Re: Injecting EJB References NullPointerException JBoss 5.0

[mpurdy1973]

"PeterJ" wrote : You should provide a mappedName for @EJB, because the default name (HelloWorldSession) is typically not a valid JNDI name for looking up an EJB (most likely, it is something like xxx/HelloWorldSession/local, where xxx is the app name).
  | 
  | You can use JNDIView to determine the deployed EJB's JNDI name. http://www.jboss.org/community/docs/DOC-9584

thanx for your help - found the following:

 +- prj (class: org.jnp.interfaces.NamingContext)
  |   |   +- HelloWorldSessionBean (class: org.jnp.interfaces.NamingContext)
  |   |   |   +- local (class: Proxy for: prj.ejb3.HelloWorldSession)
  |   |   |   +- local-prj.ejb3.HelloWorldSession (class: Proxy for: prj.ejb3.HelloWorldSession)
  | 
  | here is the output at deployment:
  | 
  | 
  |   | name=HelloWorldSessionBean,service=EJB3
  |   | 18:27:23,945 INFO  [TomcatDeployment] deploy, ctxPath=/prj, vfsUrl=prj.ear/prjWEB.war
  |   | 18:27:54,210 INFO  [TomcatDeployment] undeploy, ctxPath=/prj, vfsUrl=prj.ear/prjWEB.war
  |   | 18:27:54,220 INFO  [SessionSpecContainer] Stopping jboss.j2ee:ear=prj.ear,jar=prjEJB.jar,name=HelloWorldSessionBean,service=EJB3
  |   | 18:27:54,221 INFO  [EJBContainer] STOPPED EJB: prj.ejb3.HelloWorldSessionBean ejbName: HelloWorldSessionBean
  |   | 18:27:54,368 WARN  [EjbMetadataJndiPolicyDecoratorDeployer] Defaulting to DefaultJndiBindingPolicy of "org.jboss.metadata.ejb.jboss.jndipolicy.plugins.BasicJndi
  |   | BindingPolicy" for Session Bean HelloWorldSessionBean
  |   | 18:27:54,398 INFO  [JBossASKernel] Created KernelDeployment for: prjEJB.jar
  |   | 18:27:54,398 INFO  [JBossASKernel] installing bean: jboss.j2ee:ear=prj.ear,jar=prjEJB.jar,name=HelloWorldSessionBean,service=EJB3
  |   | 18:27:54,398 INFO  [JBossASKernel]   with dependencies:
  |   | 18:27:54,398 INFO  [JBossASKernel]   and demands:
  |   | 18:27:54,398 INFO  [JBossASKernel]      jboss.ejb:service=EJBTimerService
  |   | 18:27:54,398 INFO  [JBossASKernel]   and supplies:
  |   | 18:27:54,399 INFO  [JBossASKernel]      Class:prj.ejb3.HelloWorldSession
  |   | 18:27:54,399 INFO  [JBossASKernel]      jndi:prj/HelloWorldSessionBean/local
  |   | 18:27:54,399 INFO  [JBossASKernel]      jndi:prj/HelloWorldSessionBean/local-prj.ejb3.HelloWorldSession
  |   | 18:27:54,399 INFO  [JBossASKernel]      jndi:prj/HelloWorldSessionBean/remote
  |   | 18:27:54,399 INFO  [JBossASKernel] Added bean(jboss.j2ee:ear=prj.ear,jar=prjEJB.jar,name=HelloWorldSessionBean,service=EJB3) to KernelDeployment of: prjEJB.jar
  |   | 18:27:54,453 INFO  [SessionSpecContainer] Starting jboss.j2ee:ear=prj.ear,jar=prjEJB.jar,name=HelloWorldSessionBean,service=EJB3
  |   | 18:27:54,454 INFO  [EJBContainer] STARTED EJB: prj.ejb3.HelloWorldSessionBean ejbName: HelloWorldSessionBean
  |   | 18:27:54,454 WARN  [SessionSpecContainer] Populating JBoss-specific annotation metadata manually until done by deployers: jboss.j2ee:ear=prj.ear,jar=prjEJB.jar,
  |   | name=HelloWorldSessionBean,service=EJB3
  |   | 18:27:54,489 INFO  [TomcatDeployment] deploy, ctxPath=/prj, vfsUrl=prj.ear/prjWEB.war
  |   | 18:28:16,327 ERROR [[HelloWorldCallingSessionEJBServlet]] Servlet.service() for servlet HelloWorldCallingSessionEJBServlet threw exception
  |   | java.lang.NullPointerException
  |   |         at prj.web.HelloWorldCallingSessionEJBServlet.doWork(HelloWorldCallingSessionEJBServlet.java:34)
  |   |         at prj.web.HelloWorldCallingSessionEJBServlet.doGet(HelloWorldCallingSessionEJBServlet.java:19)
  |   |         at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
  |   |         at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
  |   |         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
  |   |         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  |   |         at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
  |   |         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
  |   |         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  |   |         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
  |   |         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
  |   |         at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:189)
  |   |         at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:91)
  |   |         at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:92)
  |   |         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
  |   |         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
  |   |         at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
  |   |         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
  |   |         at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:325)
  |   |         at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:828)
  |   |         at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:601)
  |   |         at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
  |   |         at java.lang.Thread.run(Thread.java:619)
  |   | 
  | 
  | from the above information i used:
  | 
  |   |    @EJB(mappedName="prj/HelloWorldSessionBean/local")
  |   |    private HelloWorldSession helloWorldSession;
  |   | 
  | 
  | 
  | it still doesnt work:-(  am i still missing something.

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