0 Replies Latest reply on Mar 2, 2018 12:46 AM by sagar11limbu

NullPointerExceptionat at org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke

sagar11limbu Mar 2, 2018 12:46 AM

I am given a project which has EJB at the back end. so in EJB different methods are defined on remote services. like:

public List<CandidateExamDetailDto> getDeletionAdvetisementNumber(CandidateExamDetailDto dto)throws Exception;  public List<ApplicationFormAdvertisementCodeDto> getCandidateForRollNoGenerationCombined(ApplicationFormAdvertisementCodeDto codeDto) throws Exception;  public void testMethod();  // this is the method i added on project. // also defined on @local service

so now from JSF controller, I am trying to call this method:-

PostExaminationServicesRemote ref = (PostExaminationServicesRemote) jndiContext .lookup("PostExaminationServices/remote");  ref.testMethod();

I can successfully call all other methods that were already there. but since I need to do something else I defined another method e.g testMethod()

but this method throws errors like this:

java.lang.NullPointerException

at org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke(StatelessContainer.java:345)

at org.jboss.ejb3.session.InvokableContextClassProxyHack._dynamicInvoke(InvokableContextClassProxyHack.java:53)

at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:91)

at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82)

at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:898)

at org.jboss.remoting.transport.socket.ServerThread.completeInvocation(ServerThread.java:791)

at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:744)

at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:548)

at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:234)

at org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:216)

at org.jboss.remoting.Client.invoke(Client.java:1961)

at org.jboss.remoting.Client.invoke(Client.java:804)

at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:60)

at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)

at org.jboss.aspects.tx.ClientTxPropagationInterceptor.invoke(ClientTxPropagationInterceptor.java:61)

at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)

at org.jboss.ejb3.security.client.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java:65)

at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)

at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:77)

at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)

at org.jboss.ejb3.async.impl.interceptor.AsynchronousClientInterceptor.invoke(AsynchronousClientInterceptor.java:143)

at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)

at org.jboss.aspects.remoting.PojiProxy.invoke(PojiProxy.java:62)

at $Proxy408.invoke(Unknown Source)

at org.jboss.ejb3.proxy.impl.handler.session.SessionProxyInvocationHandlerBase.invoke(SessionProxyInvocationHandlerBase.java:185)

at $Proxy411.testMethod(Unknown Source)

at com.infinite.nepal.PreExamination.Controller.Controller.getCombinedCandidatesList(Controller.java:43250)

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:597)

at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:328)

at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:341)

at org.jboss.el.parser.AstPropertySuffix.invoke(AstPropertySuffix.java:58)

at org.jboss.el.parser.AstValue.invoke(AstValue.java:96)

at org.jboss.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276)

at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)

at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)

at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)

at javax.faces.component.UICommand.broadcast(UICommand.java:315)

at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)

at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)

at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)

at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)

at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)

at com.liferay.faces.bridge.lifecycle.LifecycleWrapper.execute(LifecycleWrapper.java:35)

at com.liferay.faces.bridge.BridgePhaseResourceImpl.execute(BridgePhaseResourceImpl.java:111)

at com.liferay.faces.bridge.BridgeImpl.doFacesRequest(BridgeImpl.java:115)

at javax.portlet.faces.GenericFacesPortlet.serveResource(GenericFacesPortlet.java:178)

at com.liferay.portlet.FilterChainImpl.doFilter(FilterChainImpl.java:118)

at com.liferay.portal.kernel.portlet.PortletFilterUtil.doFilter(PortletFilterUtil.java:71)

at com.liferay.portal.kernel.servlet.PortletServlet.service(PortletServlet.java:111)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:72)

at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:73)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684)

at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:471)

at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:402)

at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:329)

at com.liferay.portlet.InvokerPortletImpl.invoke(InvokerPortletImpl.java:531)

at com.liferay.portlet.InvokerPortletImpl.invokeResource(InvokerPortletImpl.java:626)

at com.liferay.portlet.InvokerPortletImpl.serveResource(InvokerPortletImpl.java:436)

at com.liferay.portal.action.LayoutAction.processPortletRequest(LayoutAction.java:1075)

at com.liferay.portal.action.LayoutAction.processLayout(LayoutAction.java:719)

at com.liferay.portal.action.LayoutAction.execute(LayoutAction.java:249)

at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)

at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)

at com.liferay.portal.struts.PortalRequestProcessor.process(PortalRequestProcessor.java:176)

at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)

at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)

at com.liferay.portal.servlet.MainServlet.callParentService(MainServlet.java:560)

at com.liferay.portal.servlet.MainServlet.service(MainServlet.java:537)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:72)

at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)

at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:163)

at com.liferay.portal.servlet.filters.secure.SecureFilter.processFilter(SecureFilter.java:294)

at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:57)

at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:206)

at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:108)

at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:73)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684)

at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:471)

at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:402)

at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:329)

at com.liferay.portal.servlet.FriendlyURLServlet.service(FriendlyURLServlet.java:138)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:72)

at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)

at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:163)

at com.liferay.portal.servlet.filters.gzip.GZipFilter.processFilter(GZipFilter.java:123)