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Dear all,

I am facing an issue when calling ServeResource method.

I want to make a portlet which returns an excel file when a button is pressed. The excel has to be generated each time that the button is pressed.

My problem is that the excel which is returned is always the same, the first one which is generated. Only if I remove the portlet and put it again, it generates a new excel. 

Anyone has any idea of why is this happening?

I use this in serve resource method:

SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy");
res.setContentType("application/vnd.ms-excel");
res.addProperty(HttpHeaders.CACHE_CONTROL, "max-age=3600, must-revalidate");
ResourceBundle resourceBundle = ResourceBundle.getBundle("content.Language",res.getLocale());
res.addProperty(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename="+LanguageUtil.get(resourceBundle, "excel.title")+"_"+ System.currentTimeMillis() + ".xls");

Any help would be very appreciated.


Thanks in advance.

Kind regards.