sending an object form client (Swing) to sever (EJB3)

[babak azarmi]

hello friends i've been trying to send an object from client my (Swing) application to my server (EJB3 remote session bean)
please take a look at my codes and guide me where did do i wrong.
thanks for your helps

Server side in my EJB3 Container (My web application is glassfish)

  
package ejb;
import javax.ejb.Remote;
 
@Remote
public interface TestRemote {
 
public void setObject(Object obj);
}

    
package ejb;
 
import javax.ejb.Stateless;
 
/**
 * Session Bean implementation class Test
 */
@Stateless
public class Test implements TestRemote {
 
@Override
public void setObject(Object obj) {
System.out.println("object has been sent");

}
}

after i compiled this code i made a jar file and deploy it
my container deployed this jar file without any problem.
also i add this jar file to my classpath in client side till the swing application has had access to this jar file

In my client site (Swing application)

package client;
 
import java.io.Serializable;
 
public class OB  implements Serializable {

/**
 * 
 */
private static final long serialVersionUID = -6777825029794240185L;

private int k;
 
public void setK(int k) {
this.k = k;
}
 
public int getK() {
return k;
}
}

    
package client;
 
import javax.naming.*;
 
import ejb.TestRemote;
 
import java.util.Properties;
 
public class Client {

//@SuppressWarnings("unchecked")
public Client() {
try {
Properties prop = new Properties();
prop.setProperty("java.naming.factory.initial","com.sun.enterprise.naming.SerialInitContextFactory");
prop.setProperty("java.naming.factory.url.pkgs","com.sun.enterprise.naming");
prop.setProperty("java.naming.factory.state","com.sun.corba.ee.impl.presentation.rmi.JNDIStateFactoryImpl");
prop.setProperty("org.omg.CORBA.ORBInitialHost", "localhost");
prop.setProperty("org.omg.CORBA.ORBInitialPort", "3700");

Context ctx = new InitialContext(prop);

OB ob = new client.OB();
ob.setK(4);

/*ClassLoader clr = ClassLoader.getSystemClassLoader();
Class temp = clr.loadClass("client.OB");

OB ob = (OB)temp.newInstance();
ob.setK(5);*/

TestRemote tr = (TestRemote)ctx.lookup("ejb.TestRemote");
tr.setObject(ob);

} catch (Exception e) {
System.out.println(e);
}
}

public static void main(String []  s) {
new Client();
}
 
}

when i want to pass the String or int Object my program works good and without problem but wen i want to send an object
i encountered to this exception

    
javax.ejb.EJBException: nested exception is: java.rmi.MarshalException: CORBA MARSHAL 1398079745 Maybe; nested exception is: 
org.omg.CORBA.MARSHAL: ----------BEGIN server-side stack trace----------
org.omg.CORBA.MARSHAL:   vmcid: SUN  minor code: 257 completed: Maybe
at com.sun.corba.ee.impl.logging.ORBUtilSystemException.couldNotFindClass(ORBUtilSystemException.java:9684)
at com.sun.corba.ee.impl.logging.ORBUtilSystemException.couldNotFindClass(ORBUtilSystemException.java:9699)
at com.sun.corba.ee.impl.encoding.CDRInputStream_1_0.read_value(CDRInputStream_1_0.java:1042)
at com.sun.corba.ee.impl.encoding.CDRInputStream_1_0.read_value(CDRInputStream_1_0.java:896)
at com.sun.corba.ee.impl.encoding.CDRInputStream.read_value(CDRInputStream.java:466)
at com.sun.corba.ee.impl.corba.TCUtility.unmarshalIn(TCUtility.java:296)
at com.sun.corba.ee.impl.corba.AnyImpl.read_value(AnyImpl.java:610)
at com.sun.corba.ee.impl.encoding.CDRInputStream_1_0.read_any(CDRInputStream_1_0.java:748)
at com.sun.corba.ee.impl.encoding.CDRInputStream.read_any(CDRInputStream.java:406)
at com.sun.corba.ee.impl.javax.rmi.CORBA.Util.readAny(Util.java:504)
at com.sun.corba.ee.impl.presentation.rmi.DynamicMethodMarshallerImpl$10.read(DynamicMethodMarshallerImpl.java:286)
at com.sun.corba.ee.impl.presentation.rmi.DynamicMethodMarshallerImpl.readArguments(DynamicMethodMarshallerImpl.java:435)
at com.sun.corba.ee.impl.presentation.rmi.ReflectiveTie._invoke(ReflectiveTie.java:152)
at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatchToServant(CorbaServerRequestDispatcherImpl.java:687)
at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatch(CorbaServerRequestDispatcherImpl.java:227)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequestRequest(CorbaMessageMediatorImpl.java:1846)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequest(CorbaMessageMediatorImpl.java:1706)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleInput(CorbaMessageMediatorImpl.java:1088)
at com.sun.corba.ee.impl.protocol.giopmsgheaders.RequestMessage_1_2.callback(RequestMessage_1_2.java:223)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequest(CorbaMessageMediatorImpl.java:806)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.dispatch(CorbaMessageMediatorImpl.java:563)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.doWork(CorbaMessageMediatorImpl.java:2567)
at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:555)
 
----------END server-side stack trace----------  vmcid: SUN  minor code: 257 completed: Maybe

my main question is how can i send an object from client side to sever side with ejb3 please give an example code

[Jeanne Boyarsky]

Babak,
Welcome to JavaRanch!

Does your object implement the java.io.Serializable interface? If not, it can't be passed to an EJB.