Null pointer exception in EP 5

[Former Member]

Hello,

i'm developing a java application with HTMLB in EP 5.0,

but when i try to see the developed pages sometimes appears an error and other times appears the page, and when i'm testing the page sometimes appears the error also, and other times all runs fine...

Somebody can tell me how can solve this problem ???

Thanks...

The error page is this:(Sorry for paste all error...)

An exception occurs during the component rendering

com.sapportals.portal.prt.component.PortalComponentException: Original exception: java.lang.NullPointerException

at pagelet._sapportalsjsp_menu.doContent_sapportalsjsp_menu.java:2911)

at com.sapportals.portal.prt.component.AbstractPortalComponent.service(AbstractPortalComponent.java:127)

at com.sapportals.portal.prt.core.broker.PortalComponentItemFacade.service(PortalComponentItemFacade.java:363)

at com.sapportals.portal.prt.core.broker.PortalComponentItem.service(PortalComponentItem.java:1705)

at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:373)

at com.sapportals.portal.prt.component.PortalComponentResponse.include(PortalComponentResponse.java:246)

at com.sapportals.portal.htmlb.page.JSPDynPage.doOutput(JSPDynPage.java:76)

at com.sapportals.htmlb.page.PageProcessor.handleRequest(PageProcessor.java:102)

at com.sapportals.portal.htmlb.page.PageProcessorComponent.doContent(PageProcessorComponent.java:139)

at com.sapportals.portal.prt.component.AbstractPortalComponent.service(AbstractPortalComponent.java:127)

at com.sapportals.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:291)

at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:198)

at com.sapportals.portal.prt.component.PortalComponentResponse.include(PortalComponentResponse.java:231)

at com.sapportals.portal.prt.pom.PortalNode.service(PortalNode.java:475)

at com.sapportals.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:291)

at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:198)

at com.sapportals.portal.prt.core.PortalRequestManager.runRequestCycle(PortalRequestManager.java:483)

at com.sapportals.portal.prt.portalconnection.sapnative.DelegatedPlugIn.handleRequest(DelegatedPlugIn.java:725)

at com.sapportals.portal.prt.portalconnection.sapnative.PortalPlugIn.handleRequest(PortalPlugIn.java:132)

at com.sapportals.portal.prt.dispatcher.Dispatcher.service(Dispatcher.java:635)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)

at com.inqmy.services.servlets_jsp.server.InvokerServlet.service(InvokerServlet.java:126)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)

at com.inqmy.services.servlets_jsp.server.RunServlet.runSerlvet(RunServlet.java:136)

at com.inqmy.services.servlets_jsp.server.ServletsAndJspImpl.startServlet(ServletsAndJspImpl.java:789)

at com.inqmy.services.httpserver.server.RequestAnalizer.checkFilename(RequestAnalizer.java:632)

at com.inqmy.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:292)

at com.inqmy.services.httpserver.server.Response.handle(Response.java:165)

at com.inqmy.services.httpserver.server.HttpServerFrame.request(HttpServerFrame.java:1044)

at com.inqmy.core.service.context.container.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:36)

at com.inqmy.core.cluster.impl3.ParserRunner.run(ParserRunner.java:30)

at com.inqmy.core.thread.impl0.ActionObject.run(ActionObject.java:46)

at java.security.AccessController.doPrivileged(Native Method)

at com.inqmy.core.thread.impl0.SingleThread.run(SingleThread.java:132)

[Former Member]

Hi,

apparently your menu.jsp tries to do something with an object variable which is null?

Regards,

Armin

[Former Member]

Ok,thanks Armin,

one more question... are any method to find which object is ???or i begin to try since i foound it ???

Regards.

[Former Member]

Hi,

You can just have a look at the generated java source file. Don't know exactly where it is in Tomcat now, but:

- it's located in the server directory

- it is named pagelet._sapportalsjsp_menu.doContent_sapportalsjsp_menu.java

This should be enough for finding it with windows file search.

If you have it -> the line numbers denoted in the stacktrace are correct.

->If you need to debug your jsp, you can also use this file as the 'source code' in your IDE.

Regards,

Armin

[Former Member]

Thanks Armin,

I begin now..

Regards