Can't get the Home interface of a Session bean,please!

Question

when I run a client of a SessionBean,(use command "java ....";
the Exception was thrown:
java.lang.ClassCastException
at com.sun.corba.se.internal.javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:293)
at javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:134)
at clientTest.ClientTest.main(ClientTest.java:35)
the mothed main() :
java.util.Properties jndiProperties = new java.util.Properties();
jndiProperties.put("java.naming.provider.url","iiop://localhost:3700");
jndiProperties.put("java.naming.factory.initial","com.sun.jndi.cosnaming.CNCtxFactory");
try {
javax.naming.directory.DirContext jndiCtx = new javax.naming.directory.InitialDirContext(jndiProperties);
Object obj = jndiCtx.lookup("ejb/Stock");
System.out.println(obj);
StockHome sh = (StockHome)PortableRemoteObject.narrow(obj, StockHome.class); //exception was thrown
}catch (javax.naming.NamingException ne) {
ne.printStackTrace();
} catch (Exception e){
e.printStackTrace();
Must I run it in the jar file deployed to appServer?
it's very inconvenient!
Thanks!!

Answer 1

Hello
Inline there are the answers
[email protected] (Grand Gana) wrote:
Hi !
I want to know how to get the local interface of a session ejb from a
jsp page ???
My session ejb is in a jar, and my jsp page is in a war. (they're not
together in a ear)You cannot call your EJB by a local interface by this way.
The war and the ejb-jar must be in the same ear.
This is due to classloading architecture.
I can have access to a remote interface of an other session ejb from
a
jsp page doing :
     InitialContext ctx = new InitialContext();
     Object objref = ctx.lookup("article.ArticleManagerHome");
     ArticleManagerHome home = (ArticleManagerHome)
PortableRemoteObject.narrow(objref,
ArticleManagerHome.class);
But I can't have access to the local interface from the same jsp page
doing :
     MyManagerLocalHome home = (MyManagerLocalHome)ctx.lookup
("article.MyManagerLocalHome");
I get the following error :
javax.naming.NameNotFoundException: Unable to
resolve 'article.ArticleManagerLocalHome' Resolved: 'article'
Unresolved:'ArticleManagerLocalHome' ; remaining
name 'ArticleManagerLocalHome' This is another problem.
Check the jndi name in the ejb-deployment descriptor or check the jndi on your
server to verify that a local interface implementation has been bound to it.
>
What should I do ???
(I don't want to put them in the same ear)
An EJB reference in the web.xml of my war ??? How ?
A lookup with java/comp/... ??? How ?
I don't understand !!! It's so difficult to do simple things !
Bloody EJBs !!!Noooooo ;)
But I can agree with you on local interfaces ....
The J2EE specs speak about "same virtual machine" ....
But classloading architecture "speaks about" "same classloader" (same ejb-jar)
or "related classloaders" (war and ejb in same ear).
I think something is still missing ....
>
TIA
JCMark