Hi,

I am having a application where I need to use resin-3.0.14 as a web server and jboss4.0.3SP1 as the application server.
I am using stateless session bean's in EJB3. When I call a remote method on the EJB from the servlet I get the following exception in the servlet.
I have deployed the same application on tomcat it works fine.

java.lang.ClassNotFoundException: com.rewards.model.Category
 at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
 at java.security.AccessController.doPrivileged(Native Method)
 at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
 at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
 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 java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:574)
 at org.jboss.remoting.loading.ObjectInputStreamWithClassLoader.resolveClass(ObjectInputStreamWithClassLoader.java:102)
 at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1538)
 at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1460)
 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 org.jboss.aop.joinpoint.InvocationResponse.readExternal(InvocationResponse.java:107)
 at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1753)
 at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1711)
 at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299)
 at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1912)
 at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1836)
 at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1713)
 at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299)
 at java.io.ObjectInputStream.readObject(ObjectInputStream.java:339)
 at org.jboss.remoting.marshal.serializable.SerializableUnMarshaller.read(SerializableUnMarshaller.java:73)
 at org.jboss.remoting.transport.socket.SocketClientInvoker.transport(SocketClientInvoker.java:242)
 at org.jboss.remoting.RemoteClientInvoker.invoke(RemoteClientInvoker.java:112)
 at org.jboss.remoting.Client.invoke(Client.java:226)
 at org.jboss.remoting.Client.invoke(Client.java:189)
 at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:41)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
 at org.jboss.aspects.tx.ClientTxPropagationInterceptor.invoke(ClientTxPropagationInterceptor.java:46)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
 at org.jboss.aspects.security.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java:40)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
 at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:41)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
 at org.jboss.ejb3.stateless.StatelessRemoteProxy.invoke(StatelessRemoteProxy.java:88)
 at $Proxy0.remoteCategory(Unknown Source)
 at com.rewards.RewardsServlet.doPost(RewardsServlet.java:66)
 at com.rewards.RewardsServlet.doGet(RewardsServlet.java:51)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:697)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
 at com.caucho.server.dispatch.ServletFilterChain.doFilter(ServletFilterChain.java:99)
 at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:163)
 at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:208)
 at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:259)
 at com.caucho.server.port.TcpConnection.run(TcpConnection.java:363)
 at com.caucho.util.ThreadPool.runTasks(ThreadPool.java:490)
 at com.caucho.util.ThreadPool.run(ThreadPool.java:423)
 at java.lang.Thread.run(Thread.java:595)

I have two methods in my Session bean. One returns a string and the other returns a object of type category which has two simple fields, name and description.
The object is serializable and implements the serializable interface.
The method which returns a string works fine. It gives the correct output.

I am placing snippets of my session bean and servlet here.

RewardsServlet

protected void doPost(HttpServletRequest arg0, HttpServletResponse arg1) throws ServletException, IOException {
{
 Context ctx = new InitialContext();
 rewardsEJB = (RewardsEJB)ctx.lookup(RewardsEJB.class.getName());
 String test = rewardsEJB.remoteMethod();
 System.out.println("Test is : " + test);
 Category category = rewardsEJB.remoteCategory();
 System.out.println("Name is : " + category.getName());
}

RewardsEJB

public String remoteMethod() {
 return "Returned String from the remote method";
}

public Category remoteCategory() {
 Category category = new Category();
 category.setName("Remote Test");
 category.setDescription("Remote Description");
 return category;
}

Can anyone help me out with this problem.

Thanks in advance,
Aditya.P