NullPointerException when starting kickstart

[davidwaf]

Hi All,
I have deployed activiti-5.5 in tomcat 7.0.8,Ubuntu 10.04 and everything else runs except for kickstart. I need to run in tomcat 7.
Is tomcat 7 the issue. Anything i need to do fix the error?

This is what the logs show:

INFO: Deploying web application directory activiti-kickstart
28 May 2011 1:14:06 PM org.apache.catalina.loader.WebappClassLoader validateJarFile
INFO: validateJarFile(/opt/tomcat/webapps/activiti-kickstart/WEB-INF/lib/servlet-api-2.5.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class
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Then after tomcat is running:

SEVERE: Servlet.service() for servlet [Vaadin Application Servlet] in context with path [/activiti-kickstart] threw exception [java.lang.NullPointerException] with root cause
java.lang.NullPointerException
   at org.activiti.kickstart.service.KickstartServiceImpl.<init>(KickstartServiceImpl.java:68)
   at org.activiti.kickstart.service.ServiceLocator.getAdhocWorkflowService(ServiceLocator.java:33)
   at org.activiti.kickstart.ui.panel.KickstartWorkflowPanel.init(KickstartWorkflowPanel.java:81)
   at org.activiti.kickstart.ui.panel.KickstartWorkflowPanel.<init>(KickstartWorkflowPanel.java:71)
   at org.activiti.kickstart.ui.panel.KickstartWorkflowPanel.<init>(KickstartWorkflowPanel.java:75)
   at org.activiti.kickstart.KickStartApplication.initDefaultWorkArea(KickStartApplication.java:87)
   at org.activiti.kickstart.KickStartApplication.init(KickStartApplication.java:48)
   at com.vaadin.Application.start(Application.java:554)
   at com.vaadin.terminal.gwt.server.AbstractApplicationServlet.startApplication(AbstractApplicationServlet.java:1182)
   at com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:466)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:306)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
   at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:541)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:383)
   at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:243)
   at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
   at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:166)
   at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:288)
   at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
   at java.lang.Thread.run(Thread.java:662)
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[davidwaf]

Bump … anyone running this in tomcat 7 to offer their experience ?….bump..

[ronald_van_kuij]

http://www.catb.org/~esr/faqs/smart-questions.html#id479876

It is weekend…

[davidwaf]

Thanks Ronald. Anyway, i have managed to solve the problem, easier than i thought:  i deleted  activiti-kickstart/WEB-INF/lib/servlet-api-2.5.jar and kickstart boots fine now.
kind regards,
david

[ronald_van_kuij]

hmmm… Remarkable… Tomcat says it is ignoring the jar but it only starts working when it it realy not there… Sounds like a bug in Tomcat, but please file a jira issue to have the jar file removed, since it should not be included in the first place.

[wongkey]

I have the same problem in tomcat 6.0.23 ,win7.

[frederikherema1]

I've marked the servlet-api as scope "provided" on trunk for kickstart, so it won't happen in the next release:

<dependency>
   <groupId>javax.servlet</groupId>
   <artifactId>servlet-api</artifactId>
            <scope>provided</scope>
  </dependency>


[bismilaah786]

HTTP Status 500 -

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: java.lang.NullPointerException
com.vaadin.terminal.gwt.server.AbstractApplicationServlet.handleServiceException(AbstractApplicationServlet.java:993)
com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:548)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

root cause

java.lang.NullPointerException
org.activiti.kickstart.service.KickstartServiceImpl.<init>(KickstartServiceImpl.java:68)
org.activiti.kickstart.service.ServiceLocator.getAdhocWorkflowService(ServiceLocator.java:33)
org.activiti.kickstart.ui.panel.KickstartWorkflowPanel.init(KickstartWorkflowPanel.java:81)
org.activiti.kickstart.ui.panel.KickstartWorkflowPanel.<init>(KickstartWorkflowPanel.java:71)
org.activiti.kickstart.ui.panel.KickstartWorkflowPanel.<init>(KickstartWorkflowPanel.java:75)
org.activiti.kickstart.KickStartApplication.initDefaultWorkArea(KickStartApplication.java:87)
org.activiti.kickstart.KickStartApplication.init(KickStartApplication.java:48)
com.vaadin.Application.start(Application.java:554)
com.vaadin.terminal.gwt.server.AbstractApplicationServlet.startApplication(AbstractApplicationServlet.java:1202)
com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:484)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

note The full stack trace of the root cause is available in the Apache Tomcat/6.0.32 logs.
Apache Tomcat/6.0.32

I have above given error.
please help………….

[jbarrez]

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