My name is Arpan. I have recently started working on
EJB. I am using the JBoss v2.4.4 server. I have deployed the EJB properly but I have had some problem in the client program which looks up the EJB in the server.
My Client Program:
------------------------------------------
package orderMgmt;
import java.util.Properties;
import javax.naming.Context;
import javax.naming.InitialContext;
public class client
{
public static void main (String arg[]){
try{
Properties prop = new Properties ();
prop.put(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory");
prop.put(Context.PROVIDER_URL, "loalhost:1099");
// The exception is occuring in the following Line...
Context context = new InitialContext (prop);
Object objRef = context.lookup("OrderManagement");
orderMgmt.OrderManagementHome home = (orderMgmt.OrderManagementHome)javax.rmi.PortableRemoteObject.narrow (objRef, orderMgmt.OrderManagementHome.class);
orderMgmt.OrderManagement orderManagement = home.create ();
orderManagement.placeOrder ("xyz","abc",100);
orderManagement.remove ();
System.out.println ("Order Placed.");
}catch(Exception e){
e.printStackTrace();
}
}
}
-------------------------------------------
The client is compiling properly....
I am using the following line at the command prompt to execute the prog:
F:\Arpan\EJB\Ex1>java -cp d:\JBoss-2.4.4_Tomcat-4.0.1\jboss\lib\ext\ejb.jar;f:\j2sdkee1.3.1\lib\j2ee.jar;f:\jdk1.3.1_07\lib\dt.jar;f:\jdk1.3.1_07lib\tools.jar;f:\javamail1.2\javamail-1.2\xerces.jar;.; orderMgmt.client
--------------------------------------------
I am encountering the following exception:
---------------------------------------------
javax.naming.NoInitialContextException: Cannot instantiate class: org.jnp.interfaces.NamingContextFactory.
Root exception is java.lang.ClassNotFoundException: org.jnp.interfaces.NamingContextFactory
------------------------------------------
This problem has been boggling me for quite sometime. I do not have an ejb.jar file pesent in my JBoss lib dir. I had browsed the net to find some solution but to no avail.
Is there anybody who has a solution to this problem? Thanks in Advance....
Originally posted by zb cong:
hello every one
i wrote a simple cart session bean(Cart.class,CartHome.class,CartBean.class),packaged them into a jar file,and deployed it in the jboss2.4.4,now i want to test it.
according the tutorial in this website,i wrote a "CartTestClient.class" and a "jndi.properties"file,the "jndi.properties" as follow:
java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
java.naming.provider.url=jnp://localhost:1099
java.naming.factory.url.pkgs=org.jboss.naming 
rg.jnp.interfaces
i set the classpath ENVIRONMENT VARIABLE to point to file:
..........F:\myjava\jboss\client\jndi.properties
go to the directory that contain the "CartTestClient.class",type:
java com.mansion.ejb.CartTestClient
the output is:
F:\myjava\jboss\client>java com.mansion.ejb.CartTestClient
javax.naming.NoInitialContextException: Cannot instantiate class: org.jnp.interf
aces.NamingContextFactory. Root exception is java.lang.ClassNotFoundException:
org.jnp.interfaces.NamingContextFactory
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:297)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:286)
at java.lang.ClassLoader.loadClass(ClassLoader.java:253)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:195)
at com.sun.naming.internal.VersionHelper12.loadClass(VersionHelper12.jav
a:45)
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:6
52)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:246
)
at javax.naming.InitialContext.init(InitialContext.java:222)
at javax.naming.InitialContext.<init>(InitialContext.java:178)
at com.mansion.ejb.CartTestClient.main(CartTestClient.java:37)
my "jndi.properties" and "CartTestClient.class" are within the same directory.
my "CartTestClient.java" as follow:
package com.mansion.ejb;
import javax.naming.*;
import javax.rmi.PortableRemoteObject;
import java.util.*;
public class CartTestClient {
private CartHome cartHome = null;
public static void main(String[] args) {
try{
Context initial=new InitialContext();
Object objref=initial.lookup("tt");
CartHome home=(CartHome)PortableRemoteObject.narrow(objref,CartHome.class);
Cart shoppingCart=home.create("Duke","123");
...................
...................
...................
}catch(Exception e){
e.printStackTrace();
}
}
}
why? which one is wrong?"jndi.properties" or "CartTestClient.java"?
thanks for any helps!
