Calling Stateless Session Bean in Sun App Server8.1

/*In this code I am getting NullPointerException when
I am trying to call create() method in home object
If anyone knows please tell me how to solve this problem
Thanks*/
package caller;
import java.io.IOException;
import java.rmi.RemoteException;
import javax.ejb.CreateException;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.rmi.PortableRemoteObject;
public class MyFrame extends javax.swing.JFrame {
public static void main(String args[]) {
System.setProperty("java.naming.provider.url", "iiop://localhost:3700");
System.setProperty("java.naming.factory.initial", "com.sun.jndi.cosnaming.CNCtxFactory");
Object ob=null;
try
InitialContext jn=new InitialContext();
ob=jn.lookup("ejb/NewSessionBean");
System.out.println("Reference Available");
}catch(NamingException e){e.printStackTrace();}
test.NewSessionRemoteHome home=(test.NewSessionRemoteHome)PortableRemoteObject.narrow(ob, test.NewSessionRemoteHome.class);
try
test.NewSessionRemote remote=home.create();
System.out.println(remote.welcome());
}catch(CreateException e){e.printStackTrace();}
catch(RemoteException e){e.printStackTrace();}
}

It gaves me a headac .Can u give a direct example I
will be very greatful for u.
huh Headache!
Look specifically here.
http://docs.sun.com/source/819-0079/dgacc.html#wp1022132
It mentions that you need not pass anything to the InitialContext constructor. You need to add the appserv-rt.jar and j2ee.jar to the classpath for the client application. (These are available in the lib subdirectory of the app server installation directory)
You need to pass the ORBHost and ORBPort as arguments to the JVM
java -Dorg.omg.CORBA.ORBInitialHost=ORBhost -Dorg.omg.CORBA.ORBInitialPort=ORBport} MyClientApp
Sounds quite simple to me.

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    public String getCurrentTime()
    return ""+ new java.util.Date();
    I try to access it from a client running on the same machine(windows nt).
    DateEJBClient dateEJBClient = new DateEJBClient();
    try
    Context context = getInitialContext();
    DateEJBHome dateEJBHome = (DateEJBHome)PortableRemoteObject.narrow(context.lookup("DateEJB"), DateEJBHome.class);
    DateEJB dateEJB;
    // Use one of the create() methods below to create a new instance
    dateEJB = dateEJBHome.create();
    // Call any of the Remote methods below to access the EJB
    System.out.println("Date & Time >>> "+dateEJB.getCurrentTime());
    catch(Throwable ex)
    Any idea why I get this error?
    com.evermind.server.rmi.OrionRemoteException: jazn.com/admin is not allowed to call this EJB method, check your security settings (method-permission in ejb-jar.xml and security-role-mapping in orion-application.xml).
    at DateEJBHome_StatelessSessionHomeWrapper3.create(DateEJBHome_StatelessSessionHomeWrapper3.java:40)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:324)
    at com.evermind.server.rmi.RMICallHandler.run(RMICallHandler.java:124)
    at com.evermind.server.rmi.RMICallHandler.run(RMICallHandler.java:48)
    at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:186)
    at java.lang.Thread.run(Thread.java:534)
    at connection to localhost/127.0.0.1 as admin
    at DateEJBHome_StatelessSessionHomeWrapper3.create(DateEJBHome_StatelessSessionHomeWrapper3.java:40)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:324)
    at com.evermind.server.rmi.RMICallHandler.run(RMICallHandler.java:124)
    at com.evermind.server.rmi.RMICallHandler.run(RMICallHandler.java:48)
    at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:186)
    at java.lang.Thread.run(Thread.java:534)
    Process exited with exit code 0.

    I beleive you need the POI jar file in the <ias_home>/j2ee//home/applib directory or in your app severs PATH.

  • JBoss message driven bean calling a session bean

    Hi guys, can you please help me? I want my mdb to call my session bean....can you provide me some examples of ejb-jar.xml and jboss.xml with regards to this configuration....thanks...im creating my deployment descriptors manually

    Here is a little example, I hope it will help you.
    ejb-jar.xml
    =============================================
    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd">
    <ejb-jar >
    <enterprise-beans>
    <!-- Session Beans -->
    <session >
    <display-name>TestSessionEJB</display-name>
    <ejb-name>TestSession</ejb-name>
    <home>mdbtest.interfaces.TestSessionHome</home>
    <remote>mdbtest.interfaces.TestSession</remote>
    <local-home>mdbtest.interfaces.TestSessionLocalHome</local-home>
    <local>mdbtest.interfaces.TestSessionLocal</local>
    <ejb-class>mdbtest.session.TestSessionEJB</ejb-class>
    <session-type>Stateless</session-type>
    <transaction-type>Container</transaction-type>
    ... </session>
    <!-- Message Driven Beans -->
    <message-driven >
    <description><![CDATA[]]></description>
    <display-name>TestMessageEJB</display-name>
    <ejb-name>TestMessage</ejb-name>
    <ejb-class>mdbtest.message.TestMessageEJB</ejb-class>
    <transaction-type>Container</transaction-type>
    <message-selector></message-selector>
    <acknowledge-mode>Auto-acknowledge</acknowledge-mode>
    <message-driven-destination>
    <destination-type>javax.jms.Queue</destination-type>
    <subscription-durability>NonDurable</subscription-durability>
    </message-driven-destination>
    <ejb-local-ref >
    <ejb-ref-name>ejb/TestEjb</ejb-ref-name>
    <ejb-ref-type>Session</ejb-ref-type>
    <local-home>mdbtest.interfaces.TestSessionLocalHome</local-home>
    <local>mdbtest.interfaces.TestSessionLocal</local>
    <ejb-link>TestSession</ejb-link>
    </ejb-local-ref>
    </message-driven>
    </enterprise-beans>
    </ejb-jar>
    jboss.xml:
    =============================================
    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE jboss PUBLIC "-//JBoss//DTD JBOSS 3.0//EN" "http://www.jboss.org/j2ee/dtd/jboss_3_0.dtd">
    <jboss>
    <enterprise-beans>
    <session>
    <ejb-name>TestSession</ejb-name>
    <jndi-name>ejb/MdbTest/TestSession</jndi-name>
    <local-jndi-name>TestSessionLocal</local-jndi-name>
    <configuration-name>Standard Stateless SessionBean</configuration-name>
    </session>
    <message-driven>
    <ejb-name>TestMessage</ejb-name>
    <destination-jndi-name>queue/MyTestQueue</destination-jndi-name>
    <configuration-name>Standard Message Driven Bean</configuration-name>
    </message-driven>
    </enterprise-beans>
    <resource-managers>
    </resource-managers>
    </jboss>

  • Problem Calling Remote Session Bean Method

    Need help. I am trying to call a method in a remote stateless session bean in an EJB in my web application from a stateless session bean in a different EJB in the web application. I am getting a run-time error that says,
    "java.lang.NoClassDefFoundError: dtpitb.common.sb.reports.CommonReportsHome"
    ref = ctx.lookup( jndiName );
    // Cast to Local Home Interface using RMI-IIOP
    commonReportsHome = (CommonReportsHome)
    PortableRemoteObject.narrow(ref, CommonReportsHome.class);
    If while in a session bean of an EJB, I want to call a public method in the session bean of a totally different EJB, is there something in particular I am missing. I can make the call from the web application code. I can make a remote call from this session bean to itself in the exact same fashion. I just can't call a session bean in another EJB. All thoughts are welcome.
    Thanks,
    Pete

    Thanks for replying. That could very well be the case I suppose. I'm using JBuilder and WebLogic, and JBuilder pretty much does all of the deployment descriptor code for me. However, maybe this is something I need to incorporate manually.
    One EJB is in the same project as the web application code. The other EJB (common_ejb) is in another project. The calling session bean is in the project with the web app, and the remote session bean method that I'm targeting is in the common EJB session bean. Both EJBs are included in the web app's WEB-INF\lib dir and in the war file.
    So theoretically, this isn't an unconventional practice I assume?
    Thanks,
    Pete

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