This post provides instructions on creating a simple Stateless Session Bean and a test client to see it working. It assumes Eclipase IDE and JBoss.
Create a new EJB project in Eclipse, called EJB3SessionBeanExample. Accept all project defaults.
Create 2 packages under the ejbModule directory: "bean" and "client"
Create the following classes under the bean folder:
IHelloBean
package bean;
import java.io.Serializable;
public interface IHelloBean extends Serializable {
public void doSomething();
}
HelloBeanRemote
package bean;
import javax.ejb.Remote;
@Remote
public interface HelloBeanRemote extends IHelloBean {
}
HelloBeanLocal
package bean;
import javax.ejb.Local;
@Local
public interface HelloBeanLocal extends IHelloBean {
}
HelloBean
package bean;
import javax.ejb.Stateless;
/**
* Session Bean implementation class
*/
@Stateless
public class HelloBean implements HelloBeanRemote, HelloBeanLocal {
private static final long serialVersionUID = 9184424076718418234L;
public void doSomething() {
System.out.println("Hello World!");
}
}
Create the
HelloBeanClient under the client folder:
package client;
import java.util.Properties;
import javax.naming.InitialContext;
import javax.naming.NamingException;
public class HelloBeanClient {
public static void main(String[] args) {
try {
Properties props = new Properties();
props.setProperty("java.naming.factory.initial",
"org.jnp.interfaces.NamingContextFactory");
props.setProperty("java.naming.factory.url.pkgs", "org.jboss.naming");
props.setProperty("java.naming.provider.url",
"127.0.0.1:1099");
InitialContext ctx = new InitialContext(props);
MyBeanRemote bean = (MyBeanRemote) ctx.lookup("MyBean/remote");
bean.doSomething();
} catch (NamingException e) {
e.printStackTrace();
}
}
}
Right click on the EJB3SessionBeanExample project and select Run As -> Run on Server to publish to the server.
Once it is successfully deployed, right click on the HelloBeanClient class and select Run As -> Java Application. Accept any defaults and run it. You should see Hello World! printed to the console (or log C:\Apps\JBoss\jboss-5.1.0.GA\server\default\log depending on setup).
