Jason
You
need to include some of the client jar files (located in the client directory of
jBoss) in the CLASSPATH when running your client. In this cas you need
jnp-cleint.jar
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, November 08, 2000 10:19 AM
To: jBoss
Subject: Re: [jBoss-User] DCL
Cool...BUT, it still doesn't work for me :-)
I'm trying to connect to a pretty simple Session bean called assetmgr.biz.UserMgmt. The getAllUsersHTML() method is intended for a web-based client, but I'm using it here to test--it just prints out some html generated from the entity beans that it in turn connects to. (I know, this should probably be in a JavaBean on the client end--so sue me) Here's my simple code attempt:
<code>
import javax.naming.*;
import javax.rmi.PortableRemoteObject;
import java.rmi.RMISecurityManager;
import assetmgr.biz.*;
public class test {
public static void main(String[] args) {
try {
System.setSecurityManager(new RMISecurityManager());
Context ctx = new InitialContext();
Object ref = ctx.lookup("UserMgmt");
UserMgmtHome home = (UserMgmtHome)PortableRemoteObject.narrow(ref, UserMgmtHome.class);
UserMgmt usermg = home.create();
System.out.println(usermg.getAllUsersHTML());
} catch (Exception e) {
System.out.println("Caught an exception: " + e);
e.printStackTrace();
}
}
}
</code>
Is it supposed to be that simple? Do I need to setup any special classloaders? Anyway here's the output:
<output>
Caught an exception: javax.naming.NoInitialContextException: Cannot instantiate class: org.jnp.interfaces.NamingContextFactory [Root exception is java.lang.ClassNotFoundException
: org.jnp.interfaces.NamingContextFactory]
javax.naming.NoInitialContextException: Cannot instantiate class: org.jnp.interfaces.NamingContextFactory. Root exception is java.lang.ClassNotFoundException: org.jnp.interfaces
.NamingContextFactory
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:297)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:286)
at java.lang.ClassLoader.loadClass(ClassLoader.java:253)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:195)
at com.sun.naming.internal.VersionHelper12.loadClass(VersionHelper12.java:45)
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:655)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:246)
at javax.naming.InitialContext.init(InitialContext.java:222)
at javax.naming.InitialContext.<init>(InitialContext.java:178)
at test.main(test.java:11)
</output>
(a jndi.properties file is in the classpath so the url to the server should be known -- I also tried explicitly setting the properties with no difference. I've tried on both the localhost of the server and a remote machine)
Any ideas?
-jason
Rickard �berg <[EMAIL PROTECTED]> 11/08/2000 09:46 AM
Please respond to jBoss
To: jBoss <[EMAIL PROTECTED]>
cc:
Subject: Re: [jBoss-User] DCL
Hey
[EMAIL PROTECTED] wrote:
> Would anyone be able to provide a trivial example of how to use
> Dynamic Class Loading from a remote client?
>
> I've seen lots of talk about it on this list, but with no
> implementation details :-)
>
> I've tried simple code like this, but it doesn't seem to do anything:
> System.setSecurityManager(new RMISecurityManager());
>
> What else do I need to do?
As it happens this (=DCL) was turned off a while ago and hadn't set back
on.
I just changed this. Dynamic classloading is now enabled in the server.
I have also remove jboss-client.jar from "jbosstest" and updated all
"jbosstest" scripts to set the security manager and a policy file before
starting (so that DCL is enabled).
Fixes are in CVS, as usual (both "jboss" and "jbosstest" modules are
affected).
Thanks for pointing it out :-) Let me know if there are any problems
with this.
regards,
Rickard
--
Rickard �berg
Email: [EMAIL PROTECTED]
http://www.telkel.com
http://www.jboss.org
http://www.dreambean.com
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