3 Replies Latest reply on Sep 26, 2005 8:20 AM by ethomas.joseph

Problem Servlet Communicating with Session Bean in JBoss (ne

ethomas.joseph Sep 24, 2005 6:04 AM

Hi,
I am new to JBoss. I am quite conversant with using Sun's RI for J2EE 1.4.

I have a small application in which a Servlet calles a session bean. I done packaged it for JBoss and verified it with Sun's Deploy tool to be OK (Even deployed the ear to Sun RI Server to be working fine). However I am getting error when deployed on the server.

Here is the stack trace on the Server console:

14:37:15,950 ERROR [LogInterceptor] EJBException in method: public abstract tutorial.interfaces.Fibo tutorial.interfaces.FiboHome.create() throws javax.ejb.CreateException,java.rmi.RemoteException:
javax.ejb.EJBException: Invalid invocation, check your deployment packaging, method=public abstract tutorial.interfaces.Fibo tutorial.interfaces.FiboHome.create() throws javax.ejb.CreateException,java.rmi.RemoteException
 at org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invokeHome(StatelessSessionContainer.java:161)
 at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invokeHome(CachedConnectionInterceptor.java:212)
 at org.jboss.ejb.plugins.AbstractInterceptor.invokeHome(AbstractInterceptor.java:90)
 at org.jboss.ejb.plugins.CallValidationInterceptor.invokeHome(CallValidationInterceptor.java:41)
 at org.jboss.ejb.plugins.TxInterceptorBMT.invokeHome(TxInterceptorBMT.java:54)
 at org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invokeHome(StatelessSessionInstanceInterceptor.java:81)
 at org.jboss.ejb.plugins.SecurityInterceptor.invokeHome(SecurityInterceptor.java:116)
 at org.jboss.ejb.plugins.LogInterceptor.invokeHome(LogInterceptor.java:121)
 at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invokeHome(ProxyFactoryFinderInterceptor.java:93)
 at org.jboss.ejb.SessionContainer.internalInvokeHome(SessionContainer.java:613)
 at org.jboss.ejb.Container.invoke(Container.java:894)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:324)
 at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:141)
 at org.jboss.mx.server.Invocation.dispatch(Invocation.java:80)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:72)
 at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:249)
 at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:644)
 at org.jboss.invocation.local.LocalInvoker$MBeanServerAction.invoke(LocalInvoker.java:155)
 at org.jboss.invocation.local.LocalInvoker.invoke(LocalInvoker.java:104)

 at org.jboss.invocation.InvokerInterceptor.invokeLocal(InvokerInterceptor.java:179)
 at org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:165)
 at org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.java:46)
 at org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:55)
 at org.jboss.proxy.ejb.HomeInterceptor.invoke(HomeInterceptor.java:169)
 at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:86)
 at $Proxy91.create(Unknown Source)
 at tutorial.web.ComputeServlet.doPost(ComputeServlet.java:83)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
 at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:39)
 at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:153)
 at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
 at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
 at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
 at java.lang.Thread.run(Thread.java:534)

Here is my ejb-jar.xml

<?xml version="1.0" encoding="UTF-8"?>
<ejb-jar xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.1" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/ejb-jar_2_1.xsd">
 <display-name>Fibonacci EJB</display-name>
 <enterprise-beans>
 <session>
 <description>A bean that generates Fibonacci numbers</description>
 <display-name>Fibo</display-name>
 <ejb-name>Fibo</ejb-name>
 <home>tutorial.interfaces.FiboHome</home>
 <remote>tutorial.interfaces.Fibo</remote>
 <ejb-class>tutorial.ejb.FiboBean</ejb-class>
 <session-type>Stateless</session-type>
 <transaction-type>Bean</transaction-type>
 <security-identity>
 <use-caller-identity/>
 </security-identity>
 </session>
 </enterprise-beans>

 <assembly-descriptor>
 <method-permission>
 <unchecked/>
 <method>
 <ejb-name>Fibo</ejb-name>
 <method-intf>Home</method-intf>
 <method-name>remove</method-name>
 <method-params>
 <method-param>java.lang.Object</method-param>
 </method-params>
 </method>
 <method>
 <ejb-name>Fibo</ejb-name>
 <method-intf>Remote</method-intf>
 <method-name>compute</method-name>
 <method-params>
 <method-param>int</method-param>
 </method-params>
 </method>
 <method>
 <ejb-name>Fibo</ejb-name>
 <method-intf>Remote</method-intf>
 <method-name>isIdentical</method-name>
 <method-params>
 <method-param>javax.ejb.EJBObject</method-param>
 </method-params>
 </method>
 <method>
 <ejb-name>Fibo</ejb-name>
 <method-intf>Home</method-intf>
 <method-name>remove</method-name>
 <method-params>
 <method-param>javax.ejb.Handle</method-param>
 </method-params>
 </method>
 </method-permission>
 <method-permission>
 <unchecked/>
 <method>
 <ejb-name>Fibo</ejb-name>
 <method-intf>Home</method-intf>
 <method-name>getHomeHandle</method-name>
 </method>
 <method>
 <ejb-name>Fibo</ejb-name>
 <method-intf>Home</method-intf>
 <method-name>create</method-name>
 </method>
 <method>
 <ejb-name>Fibo</ejb-name>
 <method-intf>Remote</method-intf>
 <method-name>getHandle</method-name>
 </method>
 <method>
 <ejb-name>Fibo</ejb-name>
 <method-intf>Home</method-intf>
 <method-name>getEJBMetaData</method-name>
 </method>
 <method>
 <ejb-name>Fibo</ejb-name>
 <method-intf>Remote</method-intf>
 <method-name>getPrimaryKey</method-name>
 </method>
 <method>
 <ejb-name>Fibo</ejb-name>
 <method-intf>Remote</method-intf>
 <method-name>remove</method-name>
 </method>
 <method>
 <ejb-name>Fibo</ejb-name>
 <method-intf>Remote</method-intf>
 <method-name>getEJBHome</method-name>
 </method>
 </method-permission>
 </assembly-descriptor>
</ejb-jar>

Here is my jboss.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE jboss PUBLIC "-//JBoss//DTD JBOSS 4.0//EN" "http://www.jboss.org/j2ee/dtd/jboss_4_0.dtd">
<!--<!DOCTYPE jboss PUBLIC "-//JBoss//DTD JBOSS 4.0//EN" "C:\eclipse\jboss-4.0.2\docs\dtd\jboss_4_0.dtd">-->


<jboss>
 <enterprise-beans>
 <session>
 <ejb-name>Fibo</ejb-name>
 <jndi-name>jboss/ejb/FiboHome</jndi-name> <!--If enabled would provide a name to the Fibo EJB components' home interface, which otherwise will be bound to the same name as the bean itself.-->
 </session>
 </enterprise-beans>
 <resource-managers>
 </resource-managers>
</jboss>

Thanks in advance!!!

1. Re: Problem Servlet Communicating with Session Bean in JBoss

raja05 Sep 25, 2005 2:10 AM (in response to ethomas.joseph)

Is ur Home method abstract? Can you try removing the abstract keyword from there ?
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2. Re: Problem Servlet Communicating with Session Bean in JBoss

ethomas.joseph Sep 26, 2005 2:29 AM (in response to ethomas.joseph)

Thanks, but my method isn't abstract.

My Home Interface:

package tutorial.interfaces;

public interface FiboHome extends javax.ejb.EJBHome
{
 public tutorial.interfaces.Fibo create()
 throws javax.ejb.CreateException,java.rmi.RemoteException;
}

Here is my Remote Interface:

package tutorial.interfaces;

import javax.ejb.FinderException;

public interface Fibo extends javax.ejb.EJBObject
{
 /**
 * Business method
 */
 public double[] compute(int number)
 throws java.rmi.RemoteException;
}

3. Re: Problem Servlet Communicating with Session Bean in JBoss

ethomas.joseph Sep 26, 2005 8:20 AM (in response to ethomas.joseph)

I have finally got the solution to my problem. Actually the problem is not with my application config uration or programming. Infact, JBoss 4.0.x comes with the 'default' configuration that is not fully J2EE Compatible (in order to make it efficient). Some changes have to be made for the default config to be fully J2EE complient. These changes are available on the 'whatsnew.pdf' for JBoss 4.0.x.

Cheers!!
Thomas Joseph
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