Exception: Servlet.service() for servlet jsp threw exception

Hi all
please help me to resolve the error related to jsp , I would be thankful to you
warm regards

Error is
16:47:04,209 ERROR [[jsp]] Servlet.service() for servlet jsp threw exception
java.lang.NullPointerException
at org.apache.jsp.uploadHistory_jsp._jspService(org.apache.jsp.uploadHistory_jsp:96)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)

I am posting my JSP and Servlet kindly help me please

JSP CODE where i want to see the retrived data from database

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<%@ page language="java"%>

<%@ page import="java.io.*"%>
<%@ page import="java.util.List" %>
 
<%@ page import="java.util.*"%>
<%@ 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" %>
 
<title>UploadHistory </title>
<html>
<head>
<link rel="stylesheet" type="text/css" href="include\FileUpload.css"/>
 
<Title class="PageTitle">Welcome to RDA Submission portal</Title>
</head>
<hr/>
<h3 style="color:brown;font-family:Arial" align="left">UNFCCC RDA Web Submission Portal</h3>
<hr/>
 
<center><IMG SRC="./image/under_construction_2.gif" HEIGHT=150 WIDTH=275 ALT="WELCOME TO DATAMATICS"></center>
 
<table border="10"  cellspacing="" cellpadding="10" align="center">

<% ArrayList fileList = new ArrayList(); %>

<%  fileList = (ArrayList)request.getAttribute("listdetials"); 
Iterator itr = fileList.iterator();
while(itr.hasNext())
{
out.println(itr.next());
}
%>
</table>
 
</html>

MY ACTIONSERVLET

package com.dtl.webportal;
 
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.ArrayList;
 
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.*;
 
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
 
public class UploadHistoryAction extends Action{

public ActionForward execute (ActionMapping am,
ActionForm form,
HttpServletRequest req,
HttpServletResponse res)throws ServletException,IOException
{
String target = new String("success");

UploadHistoryForm uploadHistoryForm = (UploadHistoryForm)form;
UploadServices uploadServices = new UploadServices();

if(CELoginPage.myCESession != null )
{
ArrayList uploadedFiles = (ArrayList) uploadServices.listUploads(CELoginPage.USER,CELoginPage.PASSWORD);
req.setAttribute("listdetails",uploadedFiles);
}
else
{
target = new String ("failure");
}

return am.findForward(target);
}
 
}

I think , the problem is here !!

and you are storing the request objects attribute like this :

Change it to proper name, and try !!

thanks for responding

but sagar every thing is mapped clearly.. even though it is showing error

Adding to this i would also post my Upload Services.java

please respond

Pl check the fileList object you are getting is null on not !!

yes it is getting
null

So , How can you call a method on null object, it certainly gonna throw a NullPointerException, so find out why its set to null in your Action Class .