java.lang.ClassNotFoundException: org.jnp.interfaces.NamingC

[eliza]

Hi,

I'm using JBoss-3.2.1_Tomcat-4.1.12 & JDK 1.4. While running my client application, I get the following error:

> java -jar clientapp.jar

javax.naming.NoInitialContextException: Cannot instantiate class: org.jnp.interf
aces.NamingContextFactory [Root exception is java.lang.ClassNotFoundException: o
rg.jnp.interfaces.NamingContextFactory]
at javax.naming.spi.NamingManager.getInitialContext(Unknown Source)
at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source)
at javax.naming.InitialContext.init(Unknown Source)
at javax.naming.InitialContext.(Unknown Source)
...

This is supposedly in jnp-client.jar located in jboss's client directory. I already included this file in my clientapp.jar file (including the rest of the jar files in the client directory).

I searched the archives and found some posts about a possible jboss-tomcat integration problem, so I tried using just jboss-3.2.2 (without tomcat or jetty). but still, i get the same error.


Here's a portion of my code where I set the environment properties:

Hashtable env = new Hashtable(11);
env.put(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory");
env.put(Context.URL_PKG_PREFIXES, "org.jboss.naming:org.jnp.interfaces");
env.put(Context.PROVIDER_URL, "localhost");

try {
InitialContext jndiContext = new InitialContext(env);
...

And the ant build file:












































Is there anything wrong with my ant build file? I browsed my clientapp.jar and the jboss jar files are indeed inside (but can't browse the jboss jar files)...

I even tried putting it in my classpath explicitly using the -cp option, but I got the same error:

>java -cp ".;C:\jboss\client\*.jar" -jar clientapp.jar

>java -cp ".;C:\jboss\client\jnp-client.jar" -jar clientapp.jar

>java -cp "C:\jboss\client\jnp-client.jar" -jar

All these didn't work... Would appreciate any help. Thanks.

Eliza

[jonlee]

Unfortunately I don't think you are calling it correctly. I don't think you can just bundle the actual JAR into your JAR. You actually have to unpack the contents jnp-client.jar and then pack those contents into your own JAR, preserving the directory structures.

Also, normally you don't need all the JBoss client JARs. Some of these have the same classes in them, as the intention is to have different bundlings for different application purposes.

The usual client JAR for JBoss/EJB work purposes is jbossall-client.jar.

From the command line, you would need to do the following:
java -cp C:\jboss\client\jbossall-client.jar;clientapp.jar my.object.Main

You would substitute my.object.Main with the fully qualified name for the class that has your main() method in it.

That should work - your code looks ok.

Hope it helps.

[eliza]

Thank you! The command works. Then I also unjarred jbossall-client.jar before including it into my jar file. Thanks!

[demiante]

Hi people, I'm trying to execute a java standalone client to access a session bean. My code compiles normally
(javac -classpath /usr/bin/jboss-3.2.2RC2/client/jbossall-client.jar:hellobean.jar hello/client/HelloBeanClient.java)
but when i execute it, it shows the following Exception.
$java -classpath /usr/bin/jboss-3.2.2RC2/client/jbossall-client.jar:hellobean.jar hello/client/HelloBeanClient

java.lang.ClassNotFoundException: org/jnp/interfaces/NamingContextFactory
at java.lang.Class.forName (Class.java)
at java.lang.Class.forName (Class.java:44)
at javax.naming.spi.NamingManager.getInitialContext (NamingManager.java:86)
at javax.naming.InitialContext.getDefaultInitCtx (InitialContext.java:183)
at javax.naming.InitialContext.getURLOrDefaultInitCtx (InitialContext.java:218)
at javax.naming.InitialContext.lookup (InitialContext.java:238)
at hello.client.HelloBeanClient.main (HelloBeanClient.java:14)

My class HelloBeanClient:

package hello.client;

import javax.rmi.*;
import javax.naming.*;
import javax.ejb.*;
import hello.*;

public class HelloBeanClient {
public static void main(String[] args) throws Exception {
System.setProperty("java.naming.factory.initial", "org.jnp.interfaces.NamingContextFactory");
System.setProperty("java.naming.provider.url", "jnp://sartre:1099");
System.setProperty("java.naming.factory.url.pkgs", "org.jnp.interfaces");
InitialContext ctx = new InitialContext();
Object ref = ctx.lookup("ejb/HelloBean");
HelloBeanHome home = (HelloBeanHome) PortableRemoteObject.narrow(ref, HelloBeanHome.class);
HelloBean hello = home.create();
System.out.println(hello.sayHello());
}
}

S.O: Debian GNU/Linux
JbossDist: jboss-3.2.2RC2

[jonlee]

Your java.naming.factory.url.pkgs should usually be "org.jboss.naming:org.jnp.interfaces". That is most likely the issue.

Otherwise, check that jbossall-client.jar does contain the specified class. It should be there.

[demiante]

As you can see in my previous message I did it! I put the jar jbossall-client.jar in my classpath but now this work only when i put the classpath in the command line . I still dont know why it not find the org.jnp.interfaces.NamingContextFactory in jbossall-client.jar. The class is there! I've tried other jars too, but again... the same error.

In this meanwhile i'm setting the classpath in the java command line.

[demiante]

By the way, i'm setting my classpath in the file /etc/bash.bashrc like this:


CLASSPATH=/usr/local/java/lib/tools.jar:/usr/local/jboss-3.2.2RC2/server/default/lib/javax.servlet.jar:/usr/local/jboss-3.2.2RC2/server/default/lib/jboss-j2ee.jar:/usr/local/jboss-3.2RC2/client/jbossall-client.jar:.
export CLASSPATH


thanxs!

[darranl]

Have you checked that the classpath is definately being exported and is available in the shell that you are using to execute the client?

[demiante]

Yes. I'm wondering if this is a jvm problem or a jar problem.
Whatever... it's weird.

[darranl]

Did you copy the following from the bash.bashrc file to post on here?

CLASSPATH=/usr/local/java/lib/tools.jar:/usr/local/jboss-3.2.2RC2/server/default/lib/javax.servlet.jar:/usr/local/jboss-3.2.2RC2/server/default/lib/jboss-j2ee.jar:/usr/local/jboss-3.2RC2/client/jbossall-client.jar:.
export CLASSPATH

If you did you might have a .2 missing


CLASSPATH=/usr/local/java/lib/tools.jar:/usr/local/jboss-3.2.2RC2/server/default/lib/javax.servlet.jar:/usr/local/jboss-3.2.2RC2/server/default/lib/jboss-j2ee.jar:/usr/local/jboss-3.2.2RC2/client/jbossall-client.jar:.
export CLASSPATH