Struts - Error creating form bean

[Kim Lilienfeld]

Hi

I'm trying to create a new struts application using IntelliJ on Linux. I have a really annoying error that I can't figure out. Please, please help!...

Firstly, my form does extend ActionForm...

Here are the entries into struts-config.xml
<form-bean
name="songForm"
type="java.forms.SongForm"/>

<action path="/Song"
type="java.actions.SongAction"
name="songForm"
scope="request"
validate="false">

<forward name="displaySong" path="/pages/song.jsp"/>
</action>

The following is the error displayed on the web page:
HTTP Status 500 - No action instance for path /Song could be created

type Status report

message No action instance for path /Song could be created

description The server encountered an internal error (No action instance for path /Song could be created) that prevented it from fulfilling this request.



Here is the error as shown in IntelliJ:
Jan 3, 2005 2:10:20 PM org.apache.struts.util.RequestUtils createActionForm
SEVERE: Error creating form bean of class java.forms.SongForm
java.lang.NullPointerException
at org.apache.struts.config.FormBeanConfig.createActionForm(FormBeanConfig.java:214)
at org.apache.struts.util.RequestUtils.createActionForm(RequestUtils.java:294)
at org.apache.struts.util.RequestUtils.createActionForm(RequestUtils.java:193)
at org.apache.struts.action.RequestProcessor.processActionForm(RequestProcessor.java:321)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:204)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:397)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:697)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:793)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:702)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:571)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:644)
at java.lang.Thread.run(Thread.java:595)
Jan 3, 2005 2:10:20 PM org.apache.struts.action.RequestProcessor processActionCreate
SEVERE: No action instance for path /Song could be created
java.lang.ClassNotFoundException: java.actions.SongAction
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1340)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1189)
at org.apache.struts.util.RequestUtils.applicationClass(RequestUtils.java:119)
at org.apache.struts.util.RequestUtils.applicationInstance(RequestUtils.java:145)
at org.apache.struts.action.RequestProcessor.processActionCreate(RequestProcessor.java:282)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:220)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:397)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:697)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:793)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:702)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:571)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:644)
at java.lang.Thread.run(Thread.java:595)

Thanks ion advance
Kim

[Carl Trusiak]

The problem can be summed up by one line in the stack trace:
java.lang.ClassNotFoundException: java.actions.SongAction
Ensure you have compiled and properly deployed to class SongAction

[Kim Lilienfeld]

Hi

Thanks for the reply. The class is in the correct package within web-inf/classes in the correct tomcat webapps my-webapp folder.. It does exist but can't be seen by struts???
Also - would that cause the following:
Jan 3, 2005 2:10:20 PM org.apache.struts.util.RequestUtils createActionForm
SEVERE: Error creating form bean of class java.forms.SongForm
java.lang.NullPointerException

Sorry, very confused.. looking forward to hearing your reply.

Thanks
Kim

[Carl Trusiak]

Could you post the source for SongAction and SongForm.

[Luc Jb]

Hello
the problem is with the classloader, for some reason that i can't understand it gets confused with the name of the package of your action class or action form class, it starts with "java" so it crashes loading de class, the solution may be changing the name of the package...
good luck
Lucas