[EJB/JBoss] - RMI dynamic class loading
by hipa
Does dynamic class loading really work in JBoss 4.2.2?
On server I have a bean:
Bean.java
| @Stateless
| public class Bean implements BeanRemote
| {
| public void callMe()
| {
| }
| }
|
BeanRemote.java
| @Remote
| public interface BeanRemote
| {
| public void callMe();
| }
|
Then I connect to server via RMI:
Client.java
| public class Client
| {
| public static void main(String[] args)
| {
| if (System.getSecurityManager() == null)
| {
| System.setSecurityManager(new RMISecurityManager());
| }
|
| Properties jndiProps = new Properties();
| jndiProps.put("java.naming.factory.initial", "org.jnp.interfaces.NamingContextFactory");
| jndiProps.put("java.naming.factory.url.pkgs", "org.jboss.naming:org.jnp.interfaces");
| jndiProps.put("java.naming.provider.url", "jnp://localhost/app");
|
| InitialContext ic = new InitialContext(jndiProps);
| Object bean = ic.lookup("Bean/remote");
|
| System.out.println("bean = " + bean);
| }
| }
|
Exception occurs in the line with lookup:
| Exception in thread "main" javax.naming.CommunicationException [Root exception is java.lang.ClassNotFoundException: org.test.BeanRemote]
| at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:786)
| at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:627)
| at javax.naming.InitialContext.lookup(InitialContext.java:351)
| at org.test.Client.main(Client.java:53)
| Caused by: java.lang.ClassNotFoundException: org.test.BeanRemote
| 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:306)
| at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
| at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
| at java.lang.Class.forName0(Native Method)
| at java.lang.Class.forName(Class.java:242)
| at sun.rmi.server.LoaderHandler.loadProxyInterfaces(LoaderHandler.java:707)
| at sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:651)
| at sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:588)
| at java.rmi.server.RMIClassLoader$2.loadProxyClass(RMIClassLoader.java:628)
| at java.rmi.server.RMIClassLoader.loadProxyClass(RMIClassLoader.java:294)
| at sun.rmi.server.MarshalInputStream.resolveProxyClass(MarshalInputStream.java:238)
| at java.io.ObjectInputStream.readProxyDesc(ObjectInputStream.java:1494)
| at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1457)
| at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1693)
| at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299)
| at java.io.ObjectInputStream.readObject(ObjectInputStream.java:339)
| at java.rmi.MarshalledObject.get(MarshalledObject.java:135)
| at org.jnp.interfaces.MarshalledValuePair.get(MarshalledValuePair.java:72)
| at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:710)
| ... 4 more
|
I also tried setting java.rmi.server.codebase property on client to 'http://localhost:8083' but it didn't help. Webserver on 8083 port seems not to see my bean. I can get class for example for org.jboss.web.WebServer using url 'http://localhost:8083/org.jboss.web.WebServer' but 'http://localhost:8083/org.test.BeanRemote' returns blank page.
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17 years, 10 months
