RE: java.util.Vector cannot be cast to entity bean

From: Eve Pokua <gorgeous65_at_msn.com>
Date: Sat, 17 Oct 2009 17:17:57 +0100

Hi,

Thank you for your reply. I managed to get things working.

When I change the useBean scopet to application or requestion-

<jsp:useBean id="baleent" scope="session" class="entityJB.Baleent" />

But then the data I want to display is a null.

I am trying to establise why the data is a null. It looks like data is

not being forwarded from my servlet to my jsp. IN my servlet I have -

 baleent=baleBeanRemote.findAllBales();
 System.out.println(baleent);
 HttpSession session = request.getSession();
 session.setAttribute("baleent",baleent);

 //Choose which JSP for presentation
 RequestDispatcher dispatcher = getServletContext()
 .getRequestDispatcher("/Viewdisplayold.jsp");

 //forward data to the DiscountItemsj.jsp to present
 //it to user
 dispatcher.forward(request, response);


 }catch(Exception ex){
 System.err.println("Can not access DB");
 }

SO shouldn't the useBean above pickt it up in the Viewdisplay.jsp?

What I'm I doing wrong?

eve

> Date: Sat, 17 Oct 2009 08:41:07 -0700
> From: hassan.schroeder_at_gmail.com
> To: users_at_glassfish.dev.java.net
> Subject: Re: java.util.Vector cannot be cast to entity bean
>
> On Fri, Oct 16, 2009 at 1:22 PM, Eve Pokua <gorgeous65_at_msn.com> wrote:
>
> > try{
> > //call the allbales method
> > baleent=baleBeanRemote.findAllBales();
>
> Wouldn't it be more readable/self-documenting if that was "bales" or
> "allBales" or something? Just sayin'...
>
> > <jsp:useBean id="baleent" scope="session" class="entityJB.Baleent" />
>
> > java.lang.ClassCastException: java.util.Vector cannot be cast to
> > entityJB.Baleent
>
> Yep, so what does `baleBeanRemote.findAllBales()` return? Pretty
> obviously -- if it's meant to return *bales* plural, it's very likely to be
> a collection object of some kind. Like, say, a Vector ...
>
> FWIW,
> --
> Hassan Schroeder ------------------------ hassan.schroeder_at_gmail.com
> twitter: @hassan
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe_at_glassfish.dev.java.net
> For additional commands, e-mail: users-help_at_glassfish.dev.java.net
>

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Hi, 
  
Thank you for your reply.  I managed to get things working. 
When I change the useBean scopet to application or requestion- 
  
<jsp:useBean id="baleent" scope="session" class="entityJB.Baleent" /> 
  
But then the data I want to display is a null. 
  
I am trying to establise why the data is a null.  It looks like data is 
not being forwarded from my servlet to my jsp. IN my servlet I have - 
  
  
                                baleent=baleBeanRemote.findAllBales();                                System.out.println(baleent);                                 HttpSession session = request.getSession();                                   session.setAttribute("baleent",baleent);                                                //Choose which JSP for presentation                                  RequestDispatcher dispatcher = getServletContext()                                                .getRequestDispatcher("/Viewdisplayold.jsp");                                                                   //forward data to the DiscountItemsj.jsp to present                                 //it to user                                   dispatcher.forward(request, response);                                                        }catch(Exception ex){    System.err.println("Can not access DB");    } 
  
SO shouldn't the useBean above pickt it up in the Viewdisplay.jsp? 
  
What I'm I doing wrong? 
  
eve   > Date: Sat, 17 Oct 2009 08:41:07 -0700 > From: hassan.schroeder@gmail.com > To: users@glassfish.dev.java.net > Subject: Re: java.util.Vector cannot be cast to entity bean > > On Fri, Oct 16, 2009 at 1:22 PM, Eve Pokua <gorgeous65@msn.com> wrote: > > > try{ > >                  //call the allbales method > >                  baleent=baleBeanRemote.findAllBales(); > > Wouldn't it be more readable/self-documenting if that was "bales" or > "allBales" or something? Just sayin'... > > > <jsp:useBean id="baleent" scope="session" class="entityJB.Baleent" /> > > > java.lang.ClassCastException: java.util.Vector cannot be cast to > > entityJB.Baleent > > Yep, so what does `baleBeanRemote.findAllBales()` return? Pretty > obviously -- if it's meant to return *bales* plural, it's very likely to be > a collection object of some kind. Like, say, a Vector ... > > FWIW, > -- > Hassan Schroeder ------------------------ hassan.schroeder@gmail.com > twitter: @hassan > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscribe@glassfish.dev.java.net > For additional commands, e-mail: users-help@glassfish.dev.java.net > <hr />Download Messenger onto your mobile for free. <a href='http://clk.atdmt.com/UKM/go/174426567/direct/01/' target='_new'>Learn more.</a></body>
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