[jboss-user] [EJB/JBoss] - Invoking EJB from a servlet

milan321 do-not-reply at jboss.com
Mon Jun 25 07:45:21 EDT 2007 

I am trying to access ejb form a servlet but I am getting following exception.
i would be thankful if anybody could tell me how can I fix the problem.

I am using following code :

Properties props = new Properties();
		props.put("java.naming.factory.initial",
				"org.jnp.interfaces.NamingContextFactory");
		props.put("java.naming.factory.url.pkgs",
			"org.jboss.naming:org.jnp.interfaces");
		props.put("java.naming.provider.url",
			"100.100.100.12:1099");
		InitialContext ic = new InitialContext(props);
		Object objRef = ic.lookup("npg/NpgTxn");
		System.out.println("ObjRef="+objRef);
		NpgTxnHome home = (NpgTxnHome)PortableRemoteObject.narrow(objRef,NpgTxnHome.class); 
		npgTxn = home.create();

And getting following Exception 

ERROR [LogInterceptor] EJBException in method: public abstract com.nepasoft.npg.ejb.NpgTxn com.nepasoft.npg.ejb.NpgTxnHome.create() throws javax.ejb.CreateException,java.rmi.RemoteException:
javax.ejb.EJBException: Invalid invocation, check your deployment packaging, method=public abstract com.nepasoft.npg.ejb.NpgTxn com.nepasoft.npg.ejb.NpgTxnHome.create() throws javax.ejb.CreateException,java.rmi.RemoteException
	at org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invokeHome(StatelessSessionContainer.java:175)
	at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invokeHome(CachedConnectionInterceptor.java:189)
	at org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invokeHome(StatelessSessionInstanceInterceptor.java:98)
	at org.jboss.ejb.plugins.AbstractInterceptor.invokeHome(AbstractInterceptor.java:105)
	at org.jboss.ejb.plugins.CallValidationInterceptor.invokeHome(CallValidationInterceptor.java:56)
	at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:125)
	at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:350)
	at org.jboss.ejb.plugins.TxInterceptorCMT.invokeHome(TxInterceptorCMT.java:161)
	at org.jboss.ejb.plugins.SecurityInterceptor.invokeHome(SecurityInterceptor.java:145)
	at org.jboss.ejb.plugins.LogInterceptor.invokeHome(LogInterceptor.java:132)
	at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invokeHome(ProxyFactoryFinderInterceptor.java:107)
	at org.jboss.ejb.SessionContainer.internalInvokeHome(SessionContainer.java:637)
	at org.jboss.ejb.Container.invoke(Container.java:975)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:585)
	at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
	at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
	at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
	at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
	at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
	at org.jboss.invocation.local.LocalInvoker$MBeanServerAction.invoke(LocalInvoker.java:169)
	at org.jboss.invocation.local.LocalInvoker.invoke(LocalInvoker.java:118)
	at org.jboss.invocation.InvokerInterceptor.invokeLocal(InvokerInterceptor.java:206)
	at org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:192)
	at org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.java:61)
	at org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:70)
	at org.jboss.proxy.ejb.HomeInterceptor.invoke(HomeInterceptor.java:184)
	at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:100)
	at $Proxy66.create(Unknown Source)
	at com.nepasoft.npg.controller.PostPayBillsFormEventHandler.init(PostPayBillsFormEventHandler.java:35)
	at com.nepasoft.npg.controller.PostPayBillsFormEventHandler.process(PostPayBillsFormEventHandler.java:45)
	at com.nepasoft.npg.controller.PostAllFormsEventHandler.process(PostAllFormsEventHandler.java:31)
	at com.nepasoft.npg.controller.MainController.processRequest(MainController.java:93)
	at com.nepasoft.npg.controller.MainController.doPost(MainController.java:133)
	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 com.nepasoft.npg.filters.AuthenticationFilter.doFilter(AuthenticationFilter.java:46)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
	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.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
	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:869)
	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
	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:595)
17:26:46,609 ERROR [STDERR] java.rmi.ServerException: EJBException:; nested exception is: 
	javax.ejb.EJBException: Invalid invocation, check your deployment packaging, method=public abstract com.nepasoft.npg.ejb.NpgTxn com.nepasoft.npg.ejb.NpgTxnHome.create() throws javax.ejb.CreateException,java.rmi.RemoteException
17:26:46,609 ERROR [STDERR] 	at org.jboss.ejb.plugins.LogInterceptor.handleException(LogInterceptor.java:365)
17:26:46,609 ERROR [STDERR] 	at org.jboss.ejb.plugins.LogInterceptor.invokeHome(LogInterceptor.java:136)
17:26:46,609 ERROR [STDERR] 	at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invokeHome(ProxyFactoryFinderInterceptor.java:107)
17:26:46,609 ERROR [STDERR] 	at org.jboss.ejb.SessionContainer.internalInvokeHome(SessionContainer.java:637)
17:26:46,609 ERROR [STDERR] 	at org.jboss.ejb.Container.invoke(Container.java:975)
17:26:46,609 ERROR [STDERR] 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
17:26:46,609 ERROR [STDERR] 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
17:26:46,609 ERROR [STDERR] 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
17:26:46,609 ERROR [STDERR] 	at java.lang.reflect.Method.invoke(Method.java:585)
17:26:46,609 ERROR [STDERR] 	at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
17:26:46,609 ERROR [STDERR] 	at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
17:26:46,609 ERROR [STDERR] 	at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
17:26:46,609 ERROR [STDERR] 	at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
17:26:46,609 ERROR [STDERR] 	at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
17:26:46,609 ERROR [STDERR] 	at org.jboss.invocation.local.LocalInvoker$MBeanServerAction.invoke(LocalInvoker.java:169)
17:26:46,609 ERROR [STDERR] 	at org.jboss.invocation.local.LocalInvoker.invoke(LocalInvoker.java:118)
17:26:46,609 ERROR [STDERR] 	at org.jboss.invocation.InvokerInterceptor.invokeLocal(InvokerInterceptor.java:206)
17:26:46,609 ERROR [STDERR] 	at org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:192)
17:26:46,609 ERROR [STDERR] 	at org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.java:61)
17:26:46,609 ERROR [STDERR] 	at org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:70)
17:26:46,609 ERROR [STDERR] 	at org.jboss.proxy.ejb.HomeInterceptor.invoke(HomeInterceptor.java:184)
17:26:46,609 ERROR [STDERR] 	at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:100)
17:26:46,609 ERROR [STDERR] 	at $Proxy66.create(Unknown Source)
17:26:46,609 ERROR [STDERR] 	at com.nepasoft.npg.controller.PostPayBillsFormEventHandler.init(PostPayBillsFormEventHandler.java:35)
17:26:46,609 ERROR [STDERR] 	at com.nepasoft.npg.controller.PostPayBillsFormEventHandler.process(PostPayBillsFormEventHandler.java:45)
17:26:46,609 ERROR [STDERR] 	at com.nepasoft.npg.controller.PostAllFormsEventHandler.process(PostAllFormsEventHandler.java:31)
17:26:46,609 ERROR [STDERR] 	at com.nepasoft.npg.controller.MainController.processRequest(MainController.java:93)
17:26:46,609 ERROR [STDERR] 	at com.nepasoft.npg.controller.MainController.doPost(MainController.java:133)
17:26:46,609 ERROR [STDERR] 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
17:26:46,625 ERROR [STDERR] 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
17:26:46,625 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
17:26:46,625 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
17:26:46,625 ERROR [STDERR] 	at com.nepasoft.npg.filters.AuthenticationFilter.doFilter(AuthenticationFilter.java:46)
17:26:46,625 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
17:26:46,625 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
17:26:46,625 ERROR [STDERR] 	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
17:26:46,625 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
17:26:46,625 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
17:26:46,625 ERROR [STDERR] 	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
17:26:46,625 ERROR [STDERR] 	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
17:26:46,625 ERROR [STDERR] 	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
17:26:46,625 ERROR [STDERR] 	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
17:26:46,625 ERROR [STDERR] 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
17:26:46,625 ERROR [STDERR] 	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
17:26:46,625 ERROR [STDERR] 	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
17:26:46,625 ERROR [STDERR] 	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
17:26:46,625 ERROR [STDERR] 	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
17:26:46,625 ERROR [STDERR] 	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
17:26:46,625 ERROR [STDERR] 	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
17:26:46,625 ERROR [STDERR] 	at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
17:26:46,625 ERROR [STDERR] 	at java.lang.Thread.run(Thread.java:595)
17:26:46,625 ERROR [STDERR] Caused by: javax.ejb.EJBException: Invalid invocation, check your deployment packaging, method=public abstract com.nepasoft.npg.ejb.NpgTxn com.nepasoft.npg.ejb.NpgTxnHome.create() throws javax.ejb.CreateException,java.rmi.RemoteException
17:26:46,625 ERROR [STDERR] 	at org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invokeHome(StatelessSessionContainer.java:175)
17:26:46,625 ERROR [STDERR] 	at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invokeHome(CachedConnectionInterceptor.java:189)
17:26:46,625 ERROR [STDERR] 	at org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invokeHome(StatelessSessionInstanceInterceptor.java:98)
17:26:46,625 ERROR [STDERR] 	at org.jboss.ejb.plugins.AbstractInterceptor.invokeHome(AbstractInterceptor.java:105)
17:26:46,625 ERROR [STDERR] 	at org.jboss.ejb.plugins.CallValidationInterceptor.invokeHome(CallValidationInterceptor.java:56)
17:26:46,625 ERROR [STDERR] 	at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:125)
17:26:46,625 ERROR [STDERR] 	at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:350)
17:26:46,625 ERROR [STDERR] 	at org.jboss.ejb.plugins.TxInterceptorCMT.invokeHome(TxInterceptorCMT.java:161)
17:26:46,625 ERROR [STDERR] 	at org.jboss.ejb.plugins.SecurityInterceptor.invokeHome(SecurityInterceptor.java:145)
17:26:46,625 ERROR [STDERR] 	at org.jboss.ejb.plugins.LogInterceptor.invokeHome(LogInterceptor.java:132)
17:26:46,625 ERROR [STDERR] 	... 49 more
17:26:46,625 ERROR [STDERR] java.lang.NullPointerException
17:26:46,625 ERROR [STDERR] 	at com.nepasoft.npg.controller.PostPayBillsFormEventHandler.process(PostPayBillsFormEventHandler.java:101)
17:26:46,625 ERROR [STDERR] 	at com.nepasoft.npg.controller.PostAllFormsEventHandler.process(PostAllFormsEventHandler.java:31)
17:26:46,625 ERROR [STDERR] 	at com.nepasoft.npg.controller.MainController.processRequest(MainController.java:93)
17:26:46,625 ERROR [STDERR] 	at com.nepasoft.npg.controller.MainController.doPost(MainController.java:133)
17:26:46,625 ERROR [STDERR] 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
17:26:46,625 ERROR [STDERR] 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
17:26:46,625 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
17:26:46,625 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
17:26:46,625 ERROR [STDERR] 	at com.nepasoft.npg.filters.AuthenticationFilter.doFilter(AuthenticationFilter.java:46)
17:26:46,734 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
17:26:46,734 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
17:26:46,734 ERROR [STDERR] 	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
17:26:46,734 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
17:26:46,734 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
17:26:46,734 ERROR [STDERR] 	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
17:26:46,734 ERROR [STDERR] 	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
17:26:46,734 ERROR [STDERR] 	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
17:26:46,734 ERROR [STDERR] 	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
17:26:46,734 ERROR [STDERR] 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
17:26:46,734 ERROR [STDERR] 	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
17:26:46,734 ERROR [STDERR] 	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
17:26:46,734 ERROR [STDERR] 	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
17:26:46,734 ERROR [STDERR] 	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
17:26:46,734 ERROR [STDERR] 	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
17:26:46,734 ERROR [STDERR] 	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
17:26:46,734 ERROR [STDERR] 	at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
17:26:46,734 ERROR [STDERR] 	at java.lang.Thread.run(Thread.java:595)
17:26:46,734 INFO  [[/NPG]] 
17:26:46,953 ERROR [[controller]] Servlet.service() for servlet controller threw exception
java.lang.NullPointerException
	at com.nepasoft.npg.controller.MainController.processRequest(MainController.java:114)
	at com.nepasoft.npg.controller.MainController.doPost(MainController.java:133)
	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 com.nepasoft.npg.filters.AuthenticationFilter.doFilter(AuthenticationFilter.java:46)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
	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.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
	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:869)
	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
	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:595)



But the code works when I use the same code in a jsp page in jspInit()  function. But doesnot work outside the function.
Regards 
Milan

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