1 Reply Latest reply on Jan 5, 2006 12:51 PM by rchandran

EJB3 Client Problem

rchandran Jan 4, 2006 2:59 PM

Hi,

I created a simple StatelessSessionBean using EJB3 and deployed it in JBoss-4.0.3SP1. When I tried to invoke the bean from the client, I got the following stacktrace with a NullPointerException:

java.lang.NullPointerException
at org.jboss.ejb3.stateless.StatelessLocalProxy.invoke(StatelessLocalPro
xy.java:60)
at $Proxy0.add(Unknown Source)
...
...

I also see some wiered messages in the server.log file while the server is trying to load the ear file.

2006-01-04 11:51:53,035 INFO [org.jboss.deployment.EARDeployer] Init J2EE application: file:/C:/jboss-4.0.3SP1/server/default/deploy/ejb3-sample.ear
2006-01-04 11:51:53,051 DEBUG [org.jboss.deployment.EARDeployer] Extracted non-deployable content: META-INF/MANIFEST.MF
2006-01-04 11:51:53,051 DEBUG [org.jboss.deployment.EARDeployer] Extracted deployable content: ejb3-sample.ejb3
2006-01-04 11:51:53,051 DEBUG [org.jboss.deployment.EARDeployer] Extracted non-deployable content: META-INF/application.xml
2006-01-04 11:51:53,066 DEBUG [org.jboss.deployment.EARDeployer] Deployment Info: org.jboss.deployment.DeploymentInfo@94791226 { url=file:/C:/jboss-4.0.3SP1/server/default/tmp/deploy/tmp8425ejb3-sample.ear-contents/ejb3-sample.ejb3 }
deployer: null
status: null
state: CONSTRUCTED
watch: file:/C:/jboss-4.0.3SP1/server/default/tmp/deploy/tmp8425ejb3-sample.ear-contents/ejb3-sample.ejb3
altDD: null
lastDeployed: 0
lastModified: 0
mbeans:

Any idea what could be wrong?. Thanks

1. Re: EJB3 Client Problem

rchandran Jan 5, 2006 12:51 PM (in response to rchandran)

Ok. I figured out the problem. My bean class had a missing @Resource annotation referring to my interface class. After adding that, the problem went away. May be this problem should have been pointed out by the bean deployer.
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