Could not get EJBHome

[stefan_jing]

Hi all,

i am trying to run the client:
package de.ejbkomplett.reisebuero.client;

import de.ejbkomplett.reisebuero.usecase.*;

import javax.ejb.EJBMetaData;
import javax.ejb.HomeHandle;
import javax.naming.*;
import javax.rmi.PortableRemoteObject;
import java.sql.Date;
import java.util.*;

public class Client {

public static void main(String[] args) {
System.out.println("*****************************");
System.out.println("** Test-Client Kapitel 04 **");
System.out.println("** HomeHandle-Beispiel **");
System.out.println("** gestartet... **");
System.out.println("*****************************\n");

try {
// 1. JNDI-Context ermitteln
Hashtable env = new Hashtable();
env.put("java.naming.factory.initial",
"org.jnp.interfaces.NamingContextFactory");
env.put("java.naming.provider.url", "localhost:1099");
Context context = new InitialContext(env);
System.out.println("*** Mit JNDI-Namensdienst verbunden...");

// 2. Home-Objekt über JNDI holen
Object o = context.lookup("FlugSuche");
FlugSucheHome home = (FlugSucheHome)
PortableRemoteObject.narrow(o, FlugSucheHome.class);



System.out.println("*** Referenz auf Home-Objekt FlugSuche erhalten...");
System.out.println("*** FlugSuche Bean - HashCode: " + ((Object)home).hashCode());
System.out.println("*** FlugSuche Bean - Klasse : " + ((Object)home).toString());

// 3. EJBObject erzeugen
FlugSuche suche = home.create();
System.out.println("*** FlugSuche Bean ist erzeugt...");

// 4. HomeHandle der EJB-Komponente beim Home Interface anfordern
javax.ejb.HomeHandle hh = home.getHomeHandle();


// 5. HomeHandle serialisieren
System.out.println("*** HomeHandle wird serialisiert...\n");
java.io.FileOutputStream fileOut = new java.io.FileOutputStream("homehandle.ser");
java.io.ObjectOutputStream objectOut = new java.io.ObjectOutputStream(fileOut);
objectOut.writeObject(hh);
objectOut.flush();
fileOut.close();
hh = null; //HomeHandle löschen

suche.remove(); //EJBObject wieder löschen

// 6. HomeHandle deserialisieren
System.out.println("*** HomeHandle wird deserialisiert...");
java.io.FileInputStream fileIn = new java.io.FileInputStream("homehandle.ser");
java.io.ObjectInputStream objectIn = new java.io.ObjectInputStream(fileIn);
javax.ejb.HomeHandle handleNeu = (javax.ejb.HomeHandle)objectIn.readObject();
fileIn.close();

//Home-Objekt vom HomeHandle erfragen.
//Bei Aufruf der Methode getEJBHome() sorgt die Implemen-
//tierung des HomeHandles dafür, eine funktionsfähige
//Referenz auf das Home Interface zur Verfügung zu stellen.


javax.ejb.EJBHome homeNew = (FlugSucheHome)handleNeu.getEJBHome();

//Nach dem Cast auf das FlugSucheHome Interface steht das
//Remote Home Interface wieder zur Verfügung und kann für
//die Steuerung des Lebenszyklus einer FlugSuche-Komponente
//genutzt werden.
FlugSucheHome sucheNeuHome = (FlugSucheHome)PortableRemoteObject.narrow(homeNew, FlugSucheHome.class);
System.out.println("*** FlugSuche Bean - HashCode: " + ((Object)sucheNeuHome).hashCode());
System.out.println("*** FlugSuche Bean - Klasse : " + ((Object)sucheNeuHome).toString());

FlugSuche sucheNeu = sucheNeuHome.create();

//EJBObject wieder löschen
sucheNeu.remove();
} catch (Exception e) {
e.printStackTrace();
}
}
}




then I get the following message:

[java] *****************************
[java] ** Test-Client Kapitel 04 **
[java] ** HomeHandle-Beispiel **
[java] ** gestartet... **
[java] *****************************
[java] *** Mit JNDI-Namensdienst verbunden...
[java] *** Referenz auf Home-Objekt FlugSuche erhalten...
[java] *** FlugSuche Bean - HashCode: 15232416
[java] *** FlugSuche Bean - Klasse : FlugSucheHome
[java] log4j:WARN No appenders could be found for logger (org.jboss.security.SecurityAssociation).
[java] log4j:WARN Please initialize the log4j system properly.
[java] *** FlugSuche Bean ist erzeugt...
[java] *** HomeHandle wird serialisiert...
[java] *** HomeHandle wird deserialisiert...
[java] java.rmi.ServerException: Could not get EJBHome; nested exception is:
[java] javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
[java] at org.jboss.proxy.ejb.handle.HomeHandleImpl.getEJBHome(HomeHandleImpl.java:107)
[java] at de.ejbkomplett.reisebuero.client.Client.main(Client.java:73)
[java] Caused by: javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
[java] at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:645)
[java] at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:247)
[java] at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:284)
[java] at javax.naming.InitialContext.lookup(InitialContext.java:351)
[java] at org.jboss.proxy.ejb.handle.HomeHandleImpl.getEJBHome(HomeHandleImpl.java:102)
[java] ... 1 more


please help me!

Thanks!

[jaikiran]

java] Caused by: javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial

Have a look at :

http://wiki.jboss.org/wiki/Wiki.jsp?page=Getquotjavax.naming.NoInitialContextExceptionquot

[stefan_jing]

Thank you!

But a typical jndi.properties file is already in my classpath:
C:\Programme\jboss\server\default\conf

[jaikiran]

As you are using a standalone java client to lookup, you will have to have that jndi.properties file in the classpath of your standalone java client too.

[stefan_jing]

i have both client and server, and there is jndi.properties file in the client classpath(C:\Programme\jboss\client) too.
i guess the problem is with the Code:

javax.ejb.EJBHome homeNew = (FlugSucheHome)handleNeu.getEJBHome();

i think the object handleNeu has the method getEJBHome(), but i don't know why, when i run the Code, there is the Exception:

[java] java.rmi.ServerException: Could not get EJBHome;