You don't have any valid value in those hidden fields, so when you jsp
is trying to convert an empty or null String to an int, it fails with
an Exception.
Bye, Dani
----- Missatge Original -----
De: Joey A <[EMAIL PROTECTED]>
Data: Dimarts, Novembre 13, 2001 5:13 pm
Assumpte: Help in session...
> Hi all,
> I'm having some problems using 'session' in my JSP's. Please let
> me know if anyone of you could help in this code:
>
> From the first page, I'm passing these values to the second page:
>
> <INPUT type="Hidden" maxlength="10" name="total_inc" size="10">
> <INPUT type="Hidden" maxlength="10" name="total_exp" size="10">
>
> <INPUT type="Hidden" maxlength="10" name="net_savings" size="10">
>
> In second page, I'm trying to assign them to new intergers like:
> <%
> int
> iTotalIncome=Integer.valueOf(request.getParameter
("total_inc")).intValue();int iTotalExpenses=Integer.valueOf
(request.getParameter("total_exp")).intValue();
> int
> iNetSavings=Integer.valueOf(request.getParameter
("net_savings")).intValue();%>
>
> And then put them in session:
>
> <%
> session.putValue("total_inc",new Integer(iTotalIncome));
> session.putValue("total_exp",new Integer(iTotalExpenses));
> session.putValue("net_savings",new Integer(iNetSavings));
> %>
>
> Finally to access them anywhere:
>
> <%out.print(session.getValue("total_inc"));%>
> <%out.print(session.getValue("total_exp"));%>
> <%out.print(session.getValue("net_savings"));%>
>
> I'm getting the followint error:
> java.lang.NumberFormatException: null
> at java.lang.Integer.parseInt(Compiled Code)
> at
> jrun__trial__cashflow__Jo_result2ejsp1d._jspService
(jrun__trial__cashflow__Jo_result2ejsp1d.java:49) at
allaire.jrun.jsp.HttpJSPServlet.service(Compiled Code)
> at allaire.jrun.jsp.JSPServlet.service(Compiled Code)
> at allaire.jrun.jsp.JSPServlet.service(Compiled Code)
> at allaire.jrun.servlet.JRunSE.service(Compiled Code)
> at allaire.jrun.session.JRunSessionService.service(Compiled Code)
> at allaire.jrun.servlet.JRunSE.runServlet(Compiled Code)
> at allaire.jrun.servlet.JRunRequestDispatcher.forward(Compiled Code)
> at allaire.jrun.servlet.JRunSE.service(Compiled Code)
> at allaire.jrun.servlet.JRunSE.service(Compiled Code)
> at allaire.jrun.servlet.JvmContext.dispatch(Compiled Code)
> at allaire.jrun.jrpp.ProxyEndpoint.run(Compiled Code)
> at allaire.jrun.ThreadPool.run(Compiled Code)
> at allaire.jrun.WorkerThread.run(Compiled Code)
>
> Can anyone point out the error?
> Thanx,
> Joey
>
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