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classcastexception when running on Unix server.

 
Greenhorn
Posts: 4
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Hi there,

I have a Struts based appln which is running fine on my m/c ( Websphere, Windows NT). I have created an EAR file and deployed to websphere running on Unix. The application blows out when referring to some beans in the JSP page. I have imported the proper struts tag libs, imported the bean by giving the fully qualified package - but still.....

Any clues?
TIA


[9/2/04 9:31:10:741 EDT] 33f45e WebGroup X Servlet Error: : java.lang.NullPointerException
at _AuthCreateDisplay_5F_FA_jsp_4._jspService(_AuthCreateDisplay_5F_FA_jsp_4.java:1434)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:142)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.runtime.JspServlet$JspServletWrapper.service(JspServlet.java:323)
at org.apache.jasper.runtime.JspServlet.serviceJspFile(JspServlet.java:503)
at org.apache.jasper.runtime.JspServlet.service(JspServlet.java:651)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.ibm.servlet.engine.webapp.StrictServletInstance.doService(ServletManager.java:827)
at com.ibm.servlet.engine.webapp.StrictLifecycleServlet._service(StrictLifecycleServlet.java:167)
at com.ibm.servlet.engine.webapp.ServicingServletState.service(StrictLifecycleServlet.java:317)
at com.ibm.servlet.engine.webapp.StrictLifecycleServlet.service(StrictLifecycleServlet.java:110)
at com.ibm.servlet.engine.webapp.ServletInstance.service(ServletManager.java:472)
at com.ibm.servlet.engine.webapp.ValidServletReferenceState.dispatch(ServletManager.java:1012)
at com.ibm.servlet.engine.webapp.ServletInstanceReference.dispatch(ServletManager.java:913)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:721)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:374)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.include(WebAppRequestDispatcher.java:167)
at org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:488)
at _E802PBasicView_jsp_3._jspService(_E802PBasicView_jsp_3.java:414)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:142)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.runtime.JspServlet$JspServletWrapper.service(JspServlet.java:323)
at org.apache.jasper.runtime.JspServlet.serviceJspFile(JspServlet.java:503)
at org.apache.jasper.runtime.JspServlet.service(JspServlet.java:651)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.ibm.servlet.engine.webapp.StrictServletInstance.doService(ServletManager.java:827)
at com.ibm.servlet.engine.webapp.StrictLifecycleServlet._service(StrictLifecycleServlet.java:167)
at com.ibm.servlet.engine.webapp.IdleServletState.service(StrictLifecycleServlet.java:297)
at com.ibm.servlet.engine.webapp.StrictLifecycleServlet.service(StrictLifecycleServlet.java:110)
at com.ibm.servlet.engine.webapp.ServletInstance.service(ServletManager.java:472)
at com.ibm.servlet.engine.webapp.ValidServletReferenceState.dispatch(ServletManager.java:1012)
at com.ibm.servlet.engine.webapp.ServletInstanceReference.dispatch(ServletManager.java:913)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:721)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:374)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:118)
at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1118)
at org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:454)
at org.apache.struts.action.RequestProcessor.processActionForward(RequestProcessor.java:404)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:282)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1450)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:541)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.ibm.servlet.engine.webapp.StrictServletInstance.doService(ServletManager.java:827)
at com.ibm.servlet.engine.webapp.StrictLifecycleServlet._service(StrictLifecycleServlet.java:167)
at com.ibm.servlet.engine.webapp.IdleServletState.service(StrictLifecycleServlet.java:297)
at com.ibm.servlet.engine.webapp.StrictLifecycleServlet.service(StrictLifecycleServlet.java:110)
at com.ibm.servlet.engine.webapp.ServletInstance.service(ServletManager.java:472)
at com.ibm.servlet.engine.webapp.ValidServletReferenceState.dispatch(ServletManager.java:1012)
at com.ibm.servlet.engine.webapp.ServletInstanceReference.dispatch(ServletManager.java:913)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:721)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:374)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:118)
at com.ibm.servlet.engine.srt.WebAppInvoker.doForward(WebAppInvoker.java:134)
at com.ibm.servlet.engine.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:239)
at com.ibm.servlet.engine.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:67)
at com.ibm.servlet.engine.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:151)
at com.ibm.servlet.engine.oselistener.OSEListenerDispatcher.service(OSEListener.java:317)
at com.ibm.servlet.engine.http11.HttpConnection.handleRequest(HttpConnection.java:60)
at com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:477)
at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:351)
at com.ibm.ws.util.CachedThread.run(ThreadPool.java:144)
 
Sheriff
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"hrtp",

We're pleased to have you here with us on the Ranch, but there are a few rules that need to be followed, and one is that proper names are required. Please take a look at the JavaRanch Naming Policy and adjust your display name to match it.

In particular, your display name must be a first and a last name separated by a space character, and must not be obviously fictitious.

Thanks!
bear
Forum Bartender

P.S. We have a forum devoted to the discussion of frameworks such as Struts, so I'm moving this topic there for you.
 
hrt prasad
Greenhorn
Posts: 4
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The JSP page in which the error is occurring is given below :

************************ START *************************************
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>
<%@ page import = "org.mdot.webapp.framework.common.DataList" %>
<%@ page import = "org.mdot.webapp.tstep.beans.RDetails" %>

<HTML>
<HEAD>
<META name="GENERATOR" content="IBM WebSphere Studio">
<META http-equiv="Content-Style-Type" content="text/css">
<LINK href="theme/MDOTGlableCSS.css" rel="stylesheet" type="text/css">
<TITLE>TEST PAGE </TITLE>
</HEAD>

<BODY>

<bean efine id ="role1" name ="role" type ="String" />
<bean efine id ="userid1" name ="userid" type ="String" />

<%
System.out.println("before getting data list in rsumm jsp (getting rdetails bean) "); // THIS LINE GETS DISPLAYED

org.mdot.webapp.tstep.beans.RDetails rbean =
(org.mdot.webapp.tstep.beans.RDetails ) ((DataList) request.getAttribute("rldatalist")).get(0);

System.out.println("before setting attribute in pagecontext.. "); // THIS LINE DOES NOT GET DISPLAYED

pageContext.setAttribute("reimbbean",reimbbean);
Integer count = null;
int i = 0;
String TDCSSEntry = "";

System.out.println("at the end of scriptlet.. ");

%>

<html:form action = "/GetRmts.do">
.
.
.
.
.
.
.
.
************************ END *************************************




THE def_stdout_log file has the error given below (WHEN THE PAGE IS ACCESSED)

.
.
.
.
[9/2/04 15:13:37:782 EDT] 45ddd3 ServletEngine A SRVE0169I: Loading Web Module: TSTEP Web Application.
[9/2/04 15:13:37:978 EDT] 45ddd3 WebGroup I SRVE0091I: [Servlet LOG]: JSP 1.1 Processor: init
[9/2/04 15:13:38:067 EDT] 45ddd3 WebGroup I SRVE0091I: [Servlet LOG]: SimpleFileServlet: init
[9/2/04 15:13:38:097 EDT] 45ddd3 WebGroup I SRVE0091I: [Servlet LOG]: InvokerServlet: init
[9/2/04 15:13:38:287 EDT] 45ddd3 WebGroup I SRVE0091I: [Servlet LOG]: action: init
[9/2/04 15:14:06:340 EDT] 55a2a9 SystemOut U 162.108.32.84
[9/2/04 15:15:04:859 EDT] 5e88f7 SystemOut U before getting data list in rsumm jsp (getting rdetails bean)
[9/2/04 15:15:04:863 EDT] 5e88f7 WebGroup X Servlet Error: org.mdot.webapp.tstep.beans.RDetails: java.lang.ClassCastException: org.mdot.webapp.tstep.beans.RDetails
at _rsumm_jsp_2._jspService(_rsumm_jsp_2.java:175)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:142)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.runtime.JspServlet$JspServletWrapper.service(JspServlet.java:323)
at org.apache.jasper.runtime.JspServlet.serviceJspFile(JspServlet.java:503)
at org.apache.jasper.runtime.JspServlet.service(JspServlet.java:651)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.ibm.servlet.engine.webapp.StrictServletInstance.doService(ServletManager.java:827)
at com.ibm.servlet.engine.webapp.StrictLifecycleServlet._service(StrictLifecycleServlet.java:167)
at com.ibm.servlet.engine.webapp.ServicingServletState.service(StrictLifecycleServlet.java:317)
at com.ibm.servlet.engine.webapp.StrictLifecycleServlet.service(StrictLifecycleServlet.java:110)
at com.ibm.servlet.engine.webapp.ServletInstance.service(ServletManager.java:472)
at com.ibm.servlet.engine.webapp.ValidServletReferenceState.dispatch(ServletManager.java:1012)
at com.ibm.servlet.engine.webapp.ServletInstanceReference.dispatch(ServletManager.java:913)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:721)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:374)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.include(WebAppRequestDispatcher.java:167)
at org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:488)
at _tstePBasicView_jsp_0._jspService(_tstePBasicView_jsp_0.java:414)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:142)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.runtime.JspServlet$JspServletWrapper.service(JspServlet.java:323)
at org.apache.jasper.runtime.JspServlet.serviceJspFile(JspServlet.java:503)
at org.apache.jasper.runtime.JspServlet.service(JspServlet.java:651)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.ibm.servlet.engine.webapp.StrictServletInstance.doService(ServletManager.java:827)
at com.ibm.servlet.engine.webapp.StrictLifecycleServlet._service(StrictLifecycleServlet.java:167)
at com.ibm.servlet.engine.webapp.IdleServletState.service(StrictLifecycleServlet.java:297)
at com.ibm.servlet.engine.webapp.StrictLifecycleServlet.service(StrictLifecycleServlet.java:110)
at com.ibm.servlet.engine.webapp.ServletInstance.service(ServletManager.java:472)
at com.ibm.servlet.engine.webapp.ValidServletReferenceState.dispatch(ServletManager.java:1012)
at com.ibm.servlet.engine.webapp.ServletInstanceReference.dispatch(ServletManager.java:913)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:721)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:374)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:118)
at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1118)
at org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:454)
at org.apache.struts.action.RequestProcessor.processActionForward(RequestProcessor.java:404)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:282)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1450)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:523)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.ibm.servlet.engine.webapp.StrictServletInstance.doService(ServletManager.java:827)
at com.ibm.servlet.engine.webapp.StrictLifecycleServlet._service(StrictLifecycleServlet.java:167)
at com.ibm.servlet.engine.webapp.IdleServletState.service(StrictLifecycleServlet.java:297)
at com.ibm.servlet.engine.webapp.StrictLifecycleServlet.service(StrictLifecycleServlet.java:110)
at com.ibm.servlet.engine.webapp.ServletInstance.service(ServletManager.java:472)
at com.ibm.servlet.engine.webapp.ValidServletReferenceState.dispatch(ServletManager.java:1012)
at com.ibm.servlet.engine.webapp.ServletInstanceReference.dispatch(ServletManager.java:913)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:721)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:374)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:118)
at com.ibm.servlet.engine.srt.WebAppInvoker.doForward(WebAppInvoker.java:134)
at com.ibm.servlet.engine.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:239)
at com.ibm.servlet.engine.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:67)
at com.ibm.servlet.engine.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:151)
at com.ibm.servlet.engine.oselistener.OSEListenerDispatcher.service(OSEListener.java:317)
at com.ibm.servlet.engine.http11.HttpConnection.handleRequest(HttpConnection.java:60)
at com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:477)
at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:351)
at com.ibm.ws.util.CachedThread.run(ThreadPool.java:144)




HELP ???
 
Ranch Hand
Posts: 15304
6
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hr tp,

You display name still does not comply with our naming policy. Please take a look at the links posted by Bear and change your dsplay name.

Thanks a bunch.
 
hrt prasad
Greenhorn
Posts: 4
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Anyone - any ideas???
 
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