Hi
I've changed my BidClient.class by adding the InitialContext code early in the
class (see below) but it is giving me this error (server side is deploying OK
no errors and BIDDER table created) :
Console:
| Exception in thread "main" javax.naming.NoInitialContextException: Cannot
instantiate class: org.jnp.interfaces.NamingContextFactory [Root exception is
java.lang.ClassNotFoundException: org.jnp.interfaces.NamingContextFactory]
| at
javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:657)
| at
javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:247)
| at javax.naming.InitialContext.init(InitialContext.java:223)
| at javax.naming.InitialContext.<init>(InitialContext.java:197)
| at Main.main(Main.java:54)
| Caused by: java.lang.ClassNotFoundException:
org.jnp.interfaces.NamingContextFactory
| at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
| at java.security.AccessController.doPrivileged(Native Method)
| at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
| at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
| at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
| at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
| at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
| at java.lang.Class.forName0(Native Method)
| at java.lang.Class.forName(Class.java:242)
| at
com.sun.naming.internal.VersionHelper12.loadClass(VersionHelper12.java:42)
| at
javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:654)
| ... 4 more
|
This is my revised BidClient.class (I run it as a Java Application in Eclipse)
with the InitialContext code on top:
JPA Client Coding:
|
|
| import javax.persistence.EntityManager;
| import javax.persistence.EntityManagerFactory;
| import javax.persistence.Persistence;
| import javax.persistence.PersistenceContext;
|
| import org.apache.log4j.Level;
| import org.apache.log4j.Logger;
| import org.apache.log4j.ConsoleAppender;
| import org.apache.log4j.SimpleLayout;
|
| import my.com.eperolehan.entities.Bidder;
|
| import javax.rmi.*;
| import javax.naming.InitialContext;
| import javax.naming.NamingException;
|
| import java.util.*;
|
|
|
| public class Main {
|
|
| private static EntityManagerFactory f;
|
| @PersistenceContext(unitName="BiddingTest")
| private static EntityManager em;
|
|
| public static void main(String[] args) throws NamingException {
|
|
| Logger log = Logger.getLogger(Main.class);
| log.setLevel(Level.WARN);
|
| SimpleLayout layout = new SimpleLayout();
| ConsoleAppender appender = new ConsoleAppender(layout);
|
|
| log.addAppender(appender);
|
|
| try {
|
|
| Properties p = new Properties();
|
| p.put("java.naming.factory.initial",
"org.jnp.interfaces.NamingContextFactory");
| p.put("java.naming.provider.url", "localhost:1099");
|
|
| InitialContext ctx = new InitialContext( p );
|
| Object obj = ctx.lookup("/Bidder");
| Bidder bidder = (Bidder)
PortableRemoteObject.narrow(obj,Bidder.class);
|
|
| System.out.println("[BidClient] : creating
EntityManagerFactory...");
| log.debug("[BidClient] : creating
EntityManagerFactory...");
| f =
Persistence.createEntityManagerFactory("BiddingTest");
| System.out.println("[BidClient] : Created.");
| log.debug("[BidClient] : Created.");
| System.out.println("[BidClient] : creating
EntityManager...");
| em = f.createEntityManager();
| System.out.println("[BidClient] : Created.");
| log.debug("[BidClient] : Created.");
|
|
| em.getTransaction().begin();
|
|
| try {
| System.out.println("[BidClient] :
creating a Bidder...");
| //Bidder bidder = new Bidder();
|
| bidder.setBidderName("Bidder No
1");
| bidder.setBidSessionId(1);
|
|
| em.persist(bidder);
| em.getTransaction().commit();
| System.out.println("[BidClient] : Bidder
created and commited.");
| log.debug("[BidClient] : Bidder created and
commited.");
|
| } catch (Exception ex) {
| em.getTransaction().rollback();
| }
|
| System.out.println("[BidClient] : Bidder person
created and persisted successfully.");
| log.debug("[BidClient] : Bidder person created
and persisted successfully.");
|
| } catch (RuntimeException e) {
|
| e.printStackTrace();
|
| } finally {
|
|
|
| }
|
|
| System.out.println("[BidClient] : closing entity manager and
factory...");
| log.debug("[BidClient] : closing entity manager and
factory...");
| em.close();
| //f.close();
| System.out.println("[BidClient] : Closed.");
| log.debug("[BidClient] : Closed.");
|
| }
|
|
| }
|
What's wrong?
Many thanks in advance!
Ezani
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