Problem with injection

Question

I have a simple test servlet,
public class TestAjaxServlet extends MyAjaxServlet {
      @EJB private SomeBean sb;
Problem is,  SomeBean instance is not injected and I get the following error in server's trace file.
System.err##System.err#Administrator#15#####Thread[RMI/IIOP Worker [3],5,Dedicated_Application_Thread]##0#0#Error##Plain###Warning: validation was turned on but an org.xml.sax.ErrorHandler was not set, which is probably not what is desired.  Parser will use a default ErrorHandler to print the first 10  errors.  Please call the setErrorHandler method to fix this.#
System.err##System.err#Administrator#15#####Thread[RMI/IIOP Worker [3],5,Dedicated_Application_Thread]##0#0#Error##Plain###Error: URI = "null", Line = "2", : Document is invalid: no grammar found. #
System.err##System.err#Administrator#15#####Thread[RMI/IIOP Worker [3],5,Dedicated_Application_Thread]##0#0#Error##Plain###Error: URI = "null", Line = "2", : Document root element "ejb-j2ee-engine", must match DOCTYPE root "null". #
When I change my servlet to extend HttpServlet, SomeBean value is injected and it works fine.
public class TestAjaxServlet extends HttpServlet {
      @EJB private SomeBean sb;
Does it have something to do with classloader ?
My ent App is packaged as follows:
my_ent_app
              |__myAjaxServlet.jar
              |                     |__MyAjaxServlet.class
              |__SomeBean_EJB.jar
              |                     |__SomeBean.class
              |                     |__SomeBeanImpl.class
              |__myWebApp.war
                                    |__web-inf/classes/TestAjaxServlet.class
                                    |__web-inf/lib/myAjaxServlet.jar

Answer 1

Hi Vladimir,
1) My web.xml is version 2.5 and
I donot have an application.xml, instead I have an application-j2ee-engine.xml and it contains:
<?xml version="1.0" encoding="UTF-8"?>
<application-j2ee-engine xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="application-j2ee-engine.xsd">
</application-j2ee-engine>
2)Yes MyAjaxServlet extend HttpServlet. It is not declared as servlet in web.xml, instead I declared it's sub-class TestAjaxServlet as a servlet in web.xml
Note that my servlet's base class is packaged in a separate jar, my EJB is packaged in a separate jar and the test servlet is in a separate war file. I have added all these as dependencies in my Enterprise Application. Though my servlet is getting invoked, web container is unable to inject value when my servlet extends a class that is part of a different jar.
Thanks,
Vijaysarathi.