Opening a file with its filename from a servlet- avoid buffer to cach files

Question

Hi,
I am building an URL with the following code and calling that particular file from this servlet using request dispatcher. When I am geting alcCode from getParameter method then it is not caching the pages
but when I am geting the same through a session value it starts caching the page after cirtain number of requests and shows up the previously requested file.
I guess it is because it always names the file with the package name.
for example if my package is sree then the file opened is named as
sree[1].pdf. Please help me solve this problem
alcCode = req.getParameter("alcList");
HttpSession userSession= req.getSession(false);//if request is from //submit action from a FORM
String alcCode;
alcCode = req.getParameter("alcList");
System.out.println("request.getparameter alcCode "+alcCode);
if (alcCode==null){
alcCode= (String) userSession.getValue("alcCode");
//else get the alc code from the session that has been stored
Calendar todaysDate=Calendar.getInstance();
int selectMonth=todaysDate.get(Calendar.MONTH);
int selectYear=todaysDate.get(Calendar.YEAR);
if(selectMonth <10)
//selectMonth = InvoiceDate.substring(1,i-8);
urlPdf="/reports/RPTS"+selectYear+"0"+selectMonth+"/PDF-FORMAT/E"+selectYear+"0"+selectMonth+"_"+alcCode+".PDF";
}else{
urlPdf="/reports/RPTS"+selectYear+selectMonth+"/PDF-FORMAT/E"+selectYear+selectMonth+"_"+alcCode+".PDF";
res.setContentType("application/pdf");
res.reset();
res.resetBuffer();
res.setHeader("Content-disposition","attachment; filename" +urlPdf );
System.out.println(urlPdf);
try{
ServletContext sc = getServletContext();
RequestDispatcher rd = sc.getRequestDispatcher(urlPdf);
rd.forward(req, res);
Thanks in advance.
-Sreekanth Varidhireddy                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   

Answer 1

I had a similar problem when I used the attachment argument to the Content-Disposition header.
try replacing this:
res.setHeader("Content-disposition","attachment; filename" +urlPdf );
with this:
res.setHeader("Content-Disposition","inline; filename=" +urlPdf );
/Niklas