Sent: Tuesday, November 13, 2001 11:13
am
Subject: 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",
iTotalIncome);
session.putValue("total_exp",
iTotalExpenses);
session.putValue("net_savings",
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
