Calling EJB from Java client

[Jorge Chata]

Hi friends:
Actually i'm working with an IBM WebSphere Application Server on
Windows NT. I already had deployed entity beans and session beans
in an EJB container. In my servlets I used them without troubles.
But when i tried to call them in a Java application (within Visual Age for Java) i got this error message :
Uncaught exception java.lang.NoClassDefFoundError: javax.naming.InitialContext
This is my application code :
import java.rmi.*;
import java.util.*;
import javax.ejb.*;
import javax.naming.*;
class HelloClient {
public HelloClient() {
super();
}
public static void main(java.lang.String[] args) {
try {
Properties props = new Properties();
props.put(Context.PROVIDER_URL,"iiop:///");props.put(Context.INITIAL_CONTEXT_FACTORY,"com.ibm.ejs.ns.jndi.CNInitialContextFactory");
Context ctx = new InitialContext(props);
HelloHome home = (HelloHome) ctx.lookup("com/wiley/compbooks/ecommerce/Hello");
Hello hello = home.create();
System.out.println(hello.hello());
hello.remove();
} catch (Exception e) {
e.printStackTrace();
}
}
}
Thanks for your help
Jorge

[Konda Balabbigari]

Hi Jorge
Make sure you put all the required classes/packages in the project class path.
Thanks
Konda Balabbigari

[Jorge Chata]

Hi Konda:
Yes. i have been including some package (jars) in the classpath
of my application and I ive got anothers error messages. I would like to know what packages are needed for that an application
can invoke EJB from IBM WebSphere 3.5.3. successfully
Thanks for your help
Jorge

[Konda Balabbigari]

Hi Jorge
1. Your current working project. ex: DemoEjb
2. IBM EJB Tools
3. IBM Enterprise Extension Libraries
4. IBM WebSphere Test Environment
Here is my client program:
package ejb.demo;
import java.util.*;
import javax.ejb.*;
import java.rmi.*;
import javax.naming.*;

public class Test {
public static void main(String args[]) {

try {
Properties props = new Properties();
props.put(Context.PROVIDER_URL,"iiop://mac23:900");
props.put(Context.INITIAL_CONTEXT_FACTORY,"com.ibm.ejs.ns.jndi.CNInitialContextFactory");
Context ctx = new InitialContext(props);
DemoHome home = (DemoHome) ctx.lookup("ejb/demo/Demo");
Demo demo = home.create();
System.out.println(demo.hello());
demo.remove();
} catch (Exception e) {
e.printStackTrace();
}

}

}
Thanks
Konda Balabbigari
Author: www.javacaps.com
Sun Certified Programmer
IBM WebSphere Certified
[This message has been edited by Konda Balabbigari (edited September 05, 2001).]
[This message has been edited by Konda Balabbigari (edited September 05, 2001).]