Im new here so at first, hi to everybody.
Im starting with EJB and Jboss and i have solved different problems i had till
now but i cant find a solution for this.
Im building an easy example with 1 easy bean with remote interface with 1
single method that returns a string saying hello world.
Im trying to access that bean remotely from a simple java client, get the
message and print into a dialog.
Here is the code:
The EJB remote interface
| package stateless;
|
| import javax.ejb.Remote;
|
|
|
| @Remote
| public interface NewSessionRemote {
|
| String getMessage();
|
| }
The EJB bean implementing the interface
package stateless;
|
| import javax.ejb.Stateless;
|
|
|
| @Stateless
|
| public class NewSessionBean implements NewSessionRemote {
|
| public String getMessage() {
| return "Hellow World";
| }
|
|
| }
The standalone client
package standalone;
|
| import java.util.Properties;
| import javax.naming.Context;
| import javax.naming.InitialContext;
| import javax.naming.NamingException;
| import stateless.*;
| import javax.swing.*;
|
|
| public class Main {
|
| public static void main(String[] args) {
| try {
|
| InitialContext ctx = null;
| Properties props = new Properties(System.getProperties());
| props.put(Context.PROVIDER_URL,"192.168.0.14:1099"); //thats my
computer network ip... just for testing purposes. Then i will use a separated
file for loading properties
|
props.put(Context.INITIAL_CONTEXT_FACTORY,"org.jnp.interfaces.NamingContextFactory");
|
props.put(Context.URL_PKG_PREFIXES,"org.jboss.naming:org.jnp.interfaces");
| ctx = new InitialContext(props);
| NewSessionRemote testEJB = (NewSessionRemote)
ctx.lookup("MiPrueba/NewSessionBean/remote");
| String cadena= testEJB.getMessage();
| JOptionPane.showMessageDialog(null,cadena);
| } catch (NamingException nex) {
| JOptionPane.showMessageDialog(null,nex.toString());
| }
|
| }
|
| }
Config files are empty. I just used annotations.
Im using NetBeans as IDE and when i execute my standalone client from NetBeans,
everything goes right. A MessageBox showing "Hellow world" appears (the
context.lookup returns a proxy) but when i execute the program outside the IDE,
i get the following:
Exception in thread "main" java.lang.ClassCastException: javax.naming.Reference
cannot be cast to stateless.NewSessionRemote
| at standalone.Main.main(Main.java:22)
|
And changing a bit the code so i can get the classes returned with:
Object testEJB = ctx.lookup("MiPrueba/NewSessionBean/remote");
|
JOptionPane.showMessageDialog(null,testEJB.getClass().toString());
when i execute it inside the IDE i get a : class $Proxy2
but executing it outside the IDE i get: class javax.naming.Reference
Any kind of help is welcome and thx in advance. You make it easier for people
whos starting with this ;)
PD: If you need more information just ask for it
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