Hi All,

I am developing a simple application that displays some information from a stateless session bean in a JSP. The EJB is a local EJB and is packaged in a jar file. The jsp is packaged within a .war file. Both these together are packaged in a .ear file. I am running this on weblogic 7.0.

The error I get is the following. The deployment descriptors I use are also pasted below. Any help would be appreciated.

Thanks,
Prashant.

<Jan 14, 2004 11:22:42 AM CST> <Error> <HTTP> <101017> <[ServletContext(id=1257716,name=webapp.war,context-path=/admin)] Root cause of ServletException
javax.naming.NameNotFoundException: Unable to resolve 'app/webapp/webapp.war/1257716/comp/env/ConfigAPIEJB' Resolved: 'app/webapp/webapp.war/1257716/comp/env' Unresolved:'ConfigAPIEJB' ; remaining name 'ConfigAPIEJB'
        at weblogic.jndi.internal.BasicNamingNode.newNameNotFoundException(BasicNamingNode.java:858)
        at weblogic.jndi.internal.BasicNamingNode.lookupHere(BasicNamingNode.java:223)
        at weblogic.jndi.internal.BasicNamingNode.lookup(BasicNamingNode.java:187)
        at weblogic.jndi.internal.BasicNamingNode.lookup(BasicNamingNode.java:19
.
.
.


I) The .war files

1. web.xml
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
   PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
   "http://java.sun.com/dtd/web-app_2_3.dtd">
  <web-app>
    <display-name>Team Project - Config</display-name>
    <description>Random</description>
  <servlet>
    <servlet-name>ConfigServlet</servlet-name>
    <jsp-file>ConfigView.jsp</jsp-file>
  </servlet>
  <ejb-local-ref>
    <ejb-ref-name>ConfigAPIEJB</ejb-ref-name>
    <ejb-ref-type>Session</ejb-ref-type>
    <local-home>sample.ejb.cfg.ConfigAPIHomeLocal<local-home>
    <local>sample.ejb.cfg.ConfigAPILocal<local>
  </ejb-local-ref>
</web-app>

2. weblogic.xml
<weblogic-web-app>
  <description> Config project text description </description>
  <reference-descriptor>
    <ejb-reference-description>
      <ejb-ref-name>ConfigAPIEJB</ejb-ref-name>
      <jndi-name>ConfigAPIEJB</jndi-name>
    </ejb-reference-description>
  </reference-descriptor>
</weblogic-web-app>

3. ConfigView.jsp (excerpt)

     Context localCtx= new InitialContext();
     cfgHome = (ConfigAPIHomeLocal) localCtx.lookup("java:comp/env/ConfigAPIEJB");



II) The ejb deployment descriptors (inside sample.jar)

1. ejb-jar.xml

<ejb-jar>
  <enterprise-beans>
     <session>
        <ejb-name>ConfigAPIEJB</ejb-name>
        <local-home>sample.ejb.cfg.ConfigAPIHomeLocal<
/local-home> <local>sample.ejb.cfg.ConfigAPILocal</local>
        <ejb-class>sample.ejb.cfg.ConfigAPIBean</ejb-c
lass>
        <session-type>Stateless</session-type>
        <transaction-type>Container</transaction-type>
      </session>
  </enterprise-beans>
</ejb-jar>

2. weblogic-ejb-jar.xml

<weblogic-ejb-jar>
        <weblogic-enterprise-bean>
                <ejb-name>ConfigAPIEJB</ejb-name>
                <stateless-session-descriptor>
                <pool>
                <max-beans-in-free-pool>1</max-beans-in-free-pool>
                <initial-beans-in-free-pool>1</initial-beans-in-free-poo
l>
                </pool>
                </stateless-session-descriptor>
                <jndi-name>ConfigAPIEJB</jndi-name>
        </weblogic-enterprise-bean>
</weblogic-ejb-jar>

III) Application (.ear) files

1. application.xml
<application>
  <display-name>Config EAR</display-name>
  <description>Application to display ejb config</description>
  <module>
    <web>
      <web-uri>webapp.war</web-uri>
      <context-root>admin</context-root>
    </web>
  </module>
  <module>
    <ejb>sample.jar</ejb>
  </module>
</application>

have you tried java:comp/env/ejb/<EJBNAME> ?

Hello Stephen,

Yes, I have tried to change the lookup in the jsp to "java:comp/env/ejb/ConfigAPIEJB".

What I dont undertand is whether registering the EJB with the <jndi-name> element set to "ConfigAPIEJB" (in weblogic-ejb-jar.xml) automatically sets the ENC registery name to ejb/ConfigAPIEJB or do I have to try and change the element <jndi-name> also to "ejb/ConfigAPIEJB" (in weblogic-ejb-jar.xml)?

I figured that as with the usual JNDI lookup, it would just put it into the base (=java:comp/env) + jndi-name (=ConfigAPIEJB). If this is the case, then I am kinda stuck understanding why the lookup fails.

Thanks,
Prashant.

Hi!

Try to add <ejb-link>sample.jar#ConfigAPIEJB</ejb-link> element right before the </ejb-local-ref> closing tag in your web.xml.

Hi Alexey,

Thank you for your suggestion.

I tried adding that line and it doesnt appear to help. Is there something special that needs to be done since the .war and .jar files are packaged together in a .ear?

To get things working, I changed the local bean to a remote bean and it works just fine. I would prefer to get the local bean working though :(

Thanks again,
Prashant.

Try also to replace <jndi-name>ConfigAPIEJB</jndi-name>
with <local-jndi-name>ConfigAPIEJB</local-jndi-name> in your weblogic-ejb-jar.xml

Hi Alexey,

Thanks for your suggestions. I finally managed to get it working.

The solution seems to be to remove the binding of jndi for the local ejb. So I modified my weblogic.xml by removing the <reference-descriptor>. Also added the <ejb-link> element in web.xml. I removed the binding of ejb to jndi (<local-jndi-name>) from the weblogic-ejb-jar.xml too. Finally I added a "Class-Path:" entry to the sample.jar in my webapp's Manifest file and everything looks ok now.

Regards,
Prashant.