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1. Re: Injecting EJB References NullPointerException JBoss 5.0
peterj Nov 5, 2008 5:14 PM (in response to mpurdy1973)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 -
2. Re: Injecting EJB References NullPointerException JBoss 5.0
mpurdy1973 Nov 5, 2008 6:42 PM (in response to 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. -
3. Re: Injecting EJB References NullPointerException JBoss 5.0
peterj Nov 5, 2008 7:03 PM (in response to mpurdy1973)See if this discussion (and the referenced discussions) helps: http://www.jboss.com/index.html?module=bb&op=viewtopic&t=143607
(Yes, I am being lazy...) -
4. Re: Injecting EJB References NullPointerException JBoss 5.0
mpurdy1973 Nov 5, 2008 8:05 PM (in response to mpurdy1973)"PeterJ" wrote:
See if this discussion (and the referenced discussions) helps: http://www.jboss.com/index.html?module=bb&op=viewtopic&t=143607
(Yes, I am being lazy...)
np: you learn more when you find it yourself!
thanx so much; my problem was i needed to update the schema from 2.3 to 2.5...
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5"> -
5. Re: Injecting EJB References NullPointerException JBoss 5.0
alrubinger Nov 5, 2008 8:12 PM (in response to mpurdy1973)"mpurdy1973" wrote:
thanx so much; my problem was i needed to update the schema from 2.3 to 2.5...
Also, the @EJB Resolver should be able to find the correct JNDI name for you, should not be required to specify "mappedName".
S,
ALR