Thanks for your reply, Boris. Everything should be in request scope and
I do get this behaviour without modifications to the bean class.
-- john
Boris Niyazov wrote:
>
> Does this happen when you change you beans? If you have jsps that use the beans
> with session scope then modifying the bean can cause this, especally if session
> object remains in the memory... Restarting your browser should also help.
>
> *********************************************************************
> * Boris Niyazov Ph: 212-854-4094 Fax: 212-854-1749 *
> * Systems Manager Email: [EMAIL PROTECTED] *
> * Columbia Law School URL: http://www.law.columbia.edu *
> *********************************************************************
>
>
>
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> >Date: Wed, 25 Apr 2001 13:25:06 -0600
> >From: John Cartwright <[EMAIL PROTECTED]>
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> >To: [EMAIL PROTECTED]
> >Subject: ClassCastException when passing a list of Beans to JSP page
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> >
> >Hello All,
> >
> >I am hoping someone can solve this mystery for me since I'm stumped.
> >
> >I have a servlet which populates a vector with beans. It then puts the
> >vector into the request object and forwards to a JSP page.
> >
> >The JSP page pulls the vector out of the request and proceeds to call
> >methods on each bean in the list.
> >
> >Sometimes the whole thing quits working and complains with a
> >
> >Internal Servlet Error:
> >javax.servlet.ServletException: sde.LayerBean
> >...
> >Root cause:
> >java.lang.ClassCastException: sde.LayerBean
> >...
> >
> >Restarting tomcat solves the problem, but I'd like to understand what's
> >going on. I'm assuming that it's the JSP page throwing the exception
> >(the errorPage directive engages).
> >
> >Can someone enlighten me? I'm using Tomcat 3.2.1 (standalone) on Linux
> >JDK1.3. The JSP page is listed below.
> >
> >Thanks!
> >
> >
> >-- john
> >
> >
> ><%@ page import="sde.LayerBean,java.util.*" %>
> ><html>
> ><body>
> ><%
> > Vector v = (Vector)request.getAttribute("list");
> > LayerBean layer;
> > Iterator i = v.iterator();
> > while (i.hasNext()) {
> > layer = (LayerBean)i.next();
> >%>
> ><%=layer.getTableName()%><BR>
> ><% } %>
> ></body>
> ></html>
> >
> >
> >
> >
> >
> >===============================================================================
> >John Cartwright
> >Professional Research Assistant / Associate Scientist
> >CIRES, SEG/NGDC/NOAA
> >(303) 497-6284
> >[EMAIL PROTECTED]
> >===============================================================================
--
===============================================================================
John Cartwright
Professional Research Assistant / Associate Scientist
CIRES, SEG/NGDC/NOAA
(303) 497-6284
[EMAIL PROTECTED]
===============================================================================
