Help neede very very urgently ... to clear the report from Cache.....

Question

Hello all,,,
In my project iam using crystsal report for eclipse to generate reports.
Iam using a .jsp page to call my report.(which i got it from the examples of CRE).
The name of my jsp page is poi.jsp
The name of my Crystal report is CrystalReport2.rpt
My problem is this....
when i run the report first time i can see my poi.jsp page and user can submit
the parameter and based on the users parameter the report is generated..(ITs working absoultely fine)
but when the user runs the report again, its not showing the parameter page (i.e user cannot see poi.jsp)
rather its showing the old generated report.
When i tried using session.invalidate and session.removeAttribute it was showing me the poi.jsp page
but the problem is when the user clicks on the print icon or any icon on the report its just
showing the poi.jsp page...
When the user closes the report or when the clicks on the button to generate the report it should
show the parameter page (poi.jsp).how can i solve this problem???
the code what iam using is as follows..( got it from the examples of CRE - database login )
Object reportSource = session.getAttribute("reportSource");
if (reportSource == null)
String report = "CrystalReport2.rpt";
ReportClientDocument reportClientDoc = new ReportClientDocument();
reportClientDoc.open(report, 0);
reportSource = reportClientDoc.getReportSource();
session.setAttribute("reportSource", reportSource);
ConnectionInfos connInfos = new ConnectionInfos();
IConnectionInfo connInfo1 = new ConnectionInfo();
connInfo1.setUserName("USER");
connInfo1.setPassword("USER");
connInfos.add(connInfo1);
CrystalReportViewer viewer = new CrystalReportViewer();
viewer.setReportSource(reportSource);
viewer.setEnableLogonPrompt(false);
viewer.setDatabaseLogonInfos(connInfos);
if (session.getAttribute("refreshed") == null)
viewer.refresh();
session.setAttribute("refreshed", "true");
viewer.setOwnPage(true);
viewer.processHttpRequest(request, response, getServletConfig().getServletContext(), null);
//session.removeAttribute("refreshed");
//session.invalidate();
thanks in advance
regards
jack

Answer 1

As far as parameter refresh is concerned add in your code
viewer.setHasRefreshButton(true)
refresh button is appeared on crystal report toolbar and you can use this button instead of explorer refrsh button and every time you can add new parameters values.
Also, if you want to update reportsource in session object. means if user wants to view more than one different reports and want to invalidate reportsource form session.
add in jsp.
session.removeAttribute("reportSource");
Happy programming
Uzma