Monday, January 26, 2009

J2EE/Java Grips 1: Websphere is garbage, OMFG 1

I was debugging a websphere/RAD issue, thinking that maybe I had messed up a configuration way down in the cellar of RAD's infinite supply of configurations. Maybe the flux-capacitor node mx3e cell.xml missed the rptptppt_Vn_ setting. No my friends, RAD seemed to have bombed on a missing servlet tag in the web.xml. NPE, NullPointer on not having the most basic setting in a J2EE app. Don't get me wrong, a developer should have the setting, but something more helpful like 'You are missing your servlet mapping' would have been helpful. here is the configuration and the error.


<servlet-mapping>
<servlet-name>OnlineServlet</servlet-name>
<url-pattern>/OnlineServlet</url-pattern>
</servlet-mapping>

------

[1/26/09 23:30:14:166 EST] 00000047 SystemOut O Caused by: java.lang.NullPointerException
at com.ibm.ws.wswebcontainer.webapp.WebAppConfigurationHelper.constructServletMappings(WebAppConfigurationHelper.java:405)
at com.ibm.ws.wswebcontainer.webapp.WebAppConfigurationHelper.createConfiguration(WebAppConfigurationHelper.java:147)
at com.ibm.ws.webcontainer.metadata.WebMetaDataFactory.createMetaData(WebMetaDataFactory.java:169)
at com.ibm.ws.runtime.component.MetaDataMgrImpl.createMetaDataFromFactories(MetaDataMgrImpl.java:135)
at com.ibm.ws.runtime.component.MetaDataMgrImpl.createMetaData(MetaDataMgrImpl.java:243)
at com.ibm.ws.runtime.component.DeployedModuleImpl.start(DeployedModuleImpl.java:561)
at com.ibm.ws.runtime.component.DeployedApplicationImpl.start(DeployedApplicationImpl.java:814)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplication(ApplicationMgrImpl.java:948)
at com.ibm.ws.runtime.component.ApplicationMgrImpl$1.run(ApplicationMgrImpl.java:1478)
at com.ibm.ws.security.auth.ContextManagerImpl.runAs(ContextManagerImpl.java:3811)
at com.ibm.ws.security.auth.ContextManagerImpl.runAsSystem(ContextManagerImpl.java:3893)
at com.ibm.ws.security.core.SecurityContext.runAsSystem(SecurityContext.java:245)

1 comment:

doyle said...

thanks you saved me some pain!!!