JBoss Deployment

[stanley1610]

Hi forummates,

In order to learn J2EE, I am using Eclipse integrated with JBoss by a plug-in called JBoss-IDE.

I downloaded the document called "Tutorial-1.2.2.pdf" at the JBoss's download site and followed it one by one.

At the last step, which is the deployment, the console shows the following messages;

23:50:44,652 WARN [verifier] EJB spec violation:
Bean : Fibo
Section: 22.2
Warning: The Bean Provider must specify the fully-qualified name of the Java class that implements the enterprise bean's business methods in the <ejb-class> element.
Info : Class not found on 'tutorial.ejb.FiboBean': No ClassLoaders found for: tutorial.ejb.FiboBean

23:50:44,662 ERROR [MainDeployer] could not create deployment: file:/D:/jboss/server/default/tmp/deploy/tmp6161FiboApp.ear-contents/FiboEJB.jar
org.jboss.deployment.DeploymentException: Verification of Enterprise Beans failed, see above for error messages.

....

What wrong did I do? How could I solve the above problem? Please help me. Thanks.

-stan

 

[sedj]

Where did you get this "FiboEJB.jar" from ?
Are you sure that the EJB version of the jar is the same as JBoss ?
Is tutorial.ejb.FiboBean within the jar file ?
Is the qualified name of the bean the same as in the ejb xml descriptors ?

 

[stanley1610]

Hi JMS,

I do know what you mean clearly. I attach my Java FiboBean.java as the following. By this with XDoclet generation, Fibo.java and FiboHome.java were made automatically.

/*
* Created on 2004/4/10
*
* To change the template for this generated file go to
* Window&gt;Preferences&gt;Java&gt;Code Generation&gt;Code and Comments
*/
package tutorial.ejb;

import java.rmi.RemoteException;

import javax.ejb.CreateException;
import javax.ejb.EJBException;
import javax.ejb.SessionBean;
import javax.ejb.SessionContext;

/**
* @author cs_cwt
*
* To change the template for this generated type comment go to
* Window&gt;Preferences&gt;Java&gt;Code Generation&gt;Code and Comments
*
* @ejb.bean name = "Fibo"
* display-name = "Fibo EJB"
* description = "EJB that computes Fibonacci suite"
* view-type = "remote"
* jndi-name = "ejb/tutorial/Fibo"
*/
public class FiboBean implements SessionBean {

/**
*
*/
public FiboBean() {
super();
// TODO Auto-generated constructor stub
}

/**
* @author Teki Chan
* @name ejbCreate
*
* This method is without parameter as this EJB is stateless
*
* @throws CreateException
* @ejb.create-method
*/
public void ejbCreate()
throws CreateException {
}

/* (non-Javadoc)
* @see javax.ejb.SessionBean#ejbActivate()
*/
public void ejbActivate() throws EJBException, RemoteException {
// TODO Auto-generated method stub

}

/* (non-Javadoc)
* @see javax.ejb.SessionBean#ejbPassivate()
*/
public void ejbPassivate() throws EJBException, RemoteException {
// TODO Auto-generated method stub

}

/* (non-Javadoc)
* @see javax.ejb.SessionBean#ejbRemove()
*/
public void ejbRemove() throws EJBException, RemoteException {
// TODO Auto-generated method stub

}

/* (non-Javadoc)
* @see javax.ejb.SessionBean#setSessionContext(javax.ejb.SessionContext)
*/
public void setSessionContext(SessionContext arg0)
throws EJBException, RemoteException {
// TODO Auto-generated method stub

}

/**
* @author Teki Chan
* @name compute
* @param number
* @return double[]
* @ejb.interface-method view-type = "remote"
*
* The business method of computing a Fibonacci suite
*/
public double[] compute(int number) {
if (number < 0) {
throw new EJBException("Argument should be positive");
}

double[] suite = new double[number+1];
suite[0] = 0;
if (number == 0) {
return suite;
}

suite[1] = 1;
for(int i=2; i<=number; i++) {
suite = suite[i-1] + suite[i-2];
}

return suite;
}
}

while ejb-jar.xml is

<?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 >

<description><![CDATA[No Description.]]></description>
<display-name>Generated by XDoclet</display-name>

<enterprise-beans>

<!-- Session Beans -->
<session >
<description><![CDATA[EJB that computes Fibonacci suite]]></description>
<display-name>Fibo EJB</display-name>

<ejb-name>Fibo</ejb-name>

<home>tutorial.interfaces.FiboHome</home>
<remote>tutorial.interfaces.Fibo</remote>
<ejb-class>tutorial.ejb.FiboBean</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Container</transaction-type>

</session>

<!--
To add session beans that you have deployment descriptor info for, add
a file to your XDoclet merge directory called session-beans.xml that contains
the <session></session> markup for those beans.
-->

<!-- Entity Beans -->
<!--
To add entity beans that you have deployment descriptor info for, add
a file to your XDoclet merge directory called entity-beans.xml that contains
the <entity></entity> markup for those beans.
-->

<!-- Message Driven Beans -->
<!--
To add message driven beans that you have deployment descriptor info for, add
a file to your XDoclet merge directory called message-driven-beans.xml that contains
the <message-driven></message-driven> markup for those beans.
-->

</enterprise-beans>

<!-- Relationships -->

<!-- Assembly Descriptor -->
<assembly-descriptor >
<!--
To add additional assembly descriptor info here, add a file to your
XDoclet merge directory called assembly-descriptor.xml that contains
the <assembly-descriptor></assembly-descriptor> markup.
-->

<!-- finder permissions -->

<!-- transactions -->

<!-- finder transactions -->
</assembly-descriptor>

</ejb-jar>

Please help. Thanks.

-stan

 

[stanley1610]

Hi sedj,

> Where did you get this "FiboEJB.jar" from ?
It is packaged by JBoss-IDE Automatically

> Are you sure that the EJB version of the jar is the same as JBoss ?
I think yes because the jar is done by Eclipse itself.

> Is tutorial.ejb.FiboBean within the jar file ?
Yes, I unzipped it and checked it.

> Is the qualified name of the bean the same as in the ejb xml descriptors ?
What does "qualified name"? I checked ejb-jar.xml and it looked fine.

The related codes were attached in the above message. Please help.

-stan

 

[stanley1610]

Hi forummates,

Do you think I have missed something?

-stan

 

[ajBarnes]

Stanley

I've just worked through the tutorial with the same problem occurring. The problem would appear to be with the XDoclet commands. In the EJB the jndi-name is 'ejb/tutorial/Fibo', but the ejb-ref in the servlet is to 'tutorial.ejb.FiboBean' (and the package also points to tutorial/ejb)
I changed the jndi-name to 'tutorial/ejb/Fibo' and all is good.

A.J.