3 Replies Latest reply on Dec 8, 2004 10:46 PM by raist_majere

jndi's error

codemyth Nov 11, 2004 1:09 AM

ejb-jar.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE ejb-jar PUBLIC '-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN' 'http://java.sun.com/dtd/ejb-jar_2_0.dtd'>
<ejb-jar>
 <enterprise-beans>
 <session>
 <ejb-name>mySessionEJB</ejb-name>
 <home>com.codemyth.study.mySessionHome</home>
 <remote>com.codemyth.study.mySession</remote>
 <ejb-class>com.codemyth.study.mySessionBean</ejb-class>
 <session-type>Stateless</session-type>
 <transaction-type>Container</transaction-type>
 </session>
 </enterprise-beans>
</ejb-jar>

jboss.xml

<?xml version="1.0"?>
<!DOCTYPE jboss PUBLIC "-//JBoss//DTD JBOSS 4.0//EN"
 "http://www.jboss.org/j2ee/dtd/jboss_4_0.dtd">
<jboss>
 <enterprise-beans>
 <session>
 <ejb-name>mySessionEJB</ejb-name>
 <jndi-name>ejb/mySessionEJB</jndi-name>
 </session>
 </enterprise-beans>
</jboss>

there is nothing in web.xml and jboss-web.xml

but when i
InitialContext.lookup("java:comp/env/ejb/mySessionEJB")--------error;
InitialContext.lookup("ejb/mySessionEJB")--------error;
InitialContext.lookup("mySessionEJB")--------error;

how do the program will correctly?

1. Re: jndi's error

darranl Nov 11, 2004 3:57 AM (in response to codemyth)

Use JNDI View in jmx-console to see what is actually bound.
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2. Re: jndi's error

chuckh Dec 8, 2004 4:14 PM (in response to codemyth)

Hi

I am new to jboss and and looking through the posts to find my problem with JNDI which looks very similar to the one that codemyth has. Mine though is with a simple data source using jboss 3.2.6. Codemyth's problem was related to jndi-ejb lookups.

Here is my source:

part of web.x.xml where my datasource is defined:

<resource-ref>
blah
<res-ref-name>jdbc/honeypot</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>

part of jboss-web.xml where a different resource-ref is defined for jboss (I don't know WHY I need this but I found it on a different forum saying that I would need to define it here - so I did and here it is!):

<resource-ref>
<res-ref-name>jdbc/honeypot</res-ref-name>
<jndi-name>jdbc/honeypot</jndi-name>
</resource-ref>

Next is my snippet of code that looks up the resource:

log.info ("Creating initial context");
props.put(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory");
props.put(Context.URL_PKG_PREFIXES, "org.jboss.naming:org.jnp.interfaces");
props.put(Context.PROVIDER_URL, "jnp://localhost:1099");

initCtx = new InitialContext(props);

listContext (initCtx);
log.info ("Getting honeypot datasource!");

dataSource = (DataSource)initCtx.lookup ("java:comp/env/jdbc/honeypot");

log.info ("Getting Connection!");

Now part of the exception trace that I am getting:
2004-12-08 16:04:38,221 INFO [STDOUT] javax.naming.NamingException: Could not dereference object [Root exception is javax.naming.NameNotFoundException: jdbc not bound]
2004-12-08 16:04:38,231 INFO [STDOUT] at org.jnp.interfaces.NamingContext.resolveLink(NamingContext.java:972)
2004-12-08 16:04:38,231 INFO [STDOUT] at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:615)
...
...
...

Now I can print out the JNDI tree under "java:comp/env/jdbc" and I do see the "honeypot" entry. But when I look it up this is where I get the exception.
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3. Re: jndi's error

raist_majere Dec 8, 2004 10:46 PM (in response to codemyth)

Where are you trying to access the EJBs? In the web tier? If so, you must define the reference in web.xml and jboss-web.xml files.
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