Unable to connect to EJB bean from servlet, but I can from s

[arrissol]

I am running tomcat and JBoss separately. And I
would
like to access an ejb from a servlet just as my
client
application did.

I tried the ejb interest example and it worked just
fine.
The client application was able to communicated with
a
remote ejb. I modified this client application into
a
servlet and complied it just fine.
During execution, the servlet throws the exception
below. Sure JBoss was running as I did successfully
run the usual client application.
Then copied the jbosssx-client.jar,jboss-client.jar,
jnp-client.jar and even the jaas.jar and ejb.jar
files
into tomcats lib directory, but the error persisted
(even after restarting tomcat).

I have learnt one thing though, the line
"Got Context" is been executed then the exception gets
thrown as I never get to see the line "Got reference".
I think the problem could be in the way I have set the
environmental variables.



Error javax.naming.NoInitialContextException: Cannot
instantiate class:
org.jnp.interfaces.NamingContextFactory [Root
exception is java.lang.ClassNotFoundException:
org.jnp.interfaces.NamingContextFactory]

The servlet looks like this.

 package com.burudani.interest;
 import java.util.Properties;
 import javax.rmi.PortableRemoteObject;
 import javax.naming.*;
 import com.burudani.interest.Interest;
 import com.burudani.interest.InterestHome;
 import java.io.*;
 import java.text.*;
 import java.util.*;
 import javax.servlet.http.*;
 import javax.servlet.*;



 public class InterestClientServlet extends HttpServlet
 {
 private void executeServer(String JavaNamingProviderURLValue,String JndiContextLookupValue,PrintWriter out)
 {
 out.println("inside executeServer()");
 String JavaNamingProviderURL="localhost:1099";
 String JndiContextLookup="Interest";
 Date ServerDate=new Date();
 SimpleDateFormat sdf;
 sdf=new SimpleDateFormat("dd MMM yyyy hh:mm:ss:ms zzz");
 try
 {
 /*System.out.println("Set the \"java.naming.provider.url\"");
 BufferedReader br=new BufferedReader (new InputStreamReader(System.in));
 String str="";int i;
 for (i=0;i<1;i++)
 str=br.readLine();
 JavaNamingProviderURL=str;
 System.out.println("Enter the lookup jndi Name of remote object");
 br=new BufferedReader (new InputStreamReader(System.in));
 for (i=0;i<1;i++)
 str=br.readLine();
 */

 JavaNamingProviderURL=JavaNamingProviderURLValue;
 JndiContextLookup=JndiContextLookupValue;
 out.println("Setting the \"java.naming.provider.url\"");
 out.println(JavaNamingProviderURL);
 out.println("Setting the lookup jndi Name of remote object");
 out.println(JndiContextLookup);
 }
 catch(Exception ioe)
 {
 System.out.println("Problems reading your values "+ioe.toString());
 }
 //set up the naming provider, this may not be necessary, depending on how your Java system is configured.
 Properties env=new Properties();

 env.setProperty("java.naming.factory.initial","org.jnp.interfaces.NamingContextFactory");


 //env.setProperty("java.naming.provider.url","localhost:1099");


 env.setProperty("java.naming.provider.url",JavaNamingProviderURL);


 env.setProperty("java.naming.factory.url.pkgs","org.jboss.naming");
 try
 {
 InitialContext jndiContext=new InitialContext(env);
 out.println("Got context");
 //Object ref=jndiContext.lookup("Interest");
 Object ref=jndiContext.lookup(JndiContextLookup);
 out.println("Got Reference");

 //Get a reference from this to the Bean's Home interface.
 InterestHome
 home=(InterestHome)PortableRemoteObject.narrow(ref,InterestHome.class);

 //Create an Interest Object using the Home Interface
 Interest interest=home.create();

 ServerDate=interest.getServerDate();
 System.out.println("Server date is "+sdf.format(ServerDate));

 //Now call the calculateCompoundInterest() method to do the interest calculation.

 System.out.println("Interest on 1000 units, at 10% per period, compounded over 2 periods is: ");

 System.out.println(interest.calculateCompoundInterest(1000,0.10,2));

 ServerDate=interest.getServerDate();
 System.out.println("Server date is "+sdf.format(ServerDate));

 }
 catch(Exception re){System.out.println("Error "+re.toString());}
 /*catch(javax.naming.NamingException ne){System.out.println("NamingException Error "+ne.toString());}
 catch(java.ejb.CreateException ce){System.out.println("java.ejb.CreateException Error "+ce;}
 catch(java.ejb.FinderException fe){System.out.println("java.ejb.FinderException Error "+fe;}
 */
 }
 public void doGet(HttpServletRequest req,HttpServletResponse res) throws ServletException, IOException
 {
 PrintWriter out=res.getWriter();
 out.println("there");
 executeServer("132.107.151.36","ejb/Interest",out);
 //just hardcode values for testing purposes.
 }

 }