Why servletContext.getResource returns null and throws JBWEB000236 java.lang.NullPointerException ?

Solution Unverified - Updated -

Issue

  • We are in the migrating process from jboss 5.0 GA to jboss eap 6.4 from windows server to RHEL 6.4. Not able to redirect to login page.
  • Under what circumstances the following application code will return null, which will lead to the java.lang.NullPointerException:
servletContext.getResource( "/" );

ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/test].[jsp]] (http-10.130.30.31-8080-19) Servlet.service() for servlet jsp threw exception
java.lang.NullPointerException

Environment

  • Red Hat JBoss Enterprise Application Platform (EAP)
    • 6.x
    • 5.x
    • 4.x

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