public ModelAndView listBill(HttpServletRequest request, HttpServletResponse response)throws Exception
{
long billId;
billId= Long.parseLong(request.getSession().getAttribute("billId").toString());
ModelMap modelMap = new ModelMap();
modelMap.addAttribute("items", salesDAO.getSalesEntries(billId));
modelMap.addAttribute("bill", new Sales());
return new ModelAndView("newBill",modelMap);
}
public ModelAndView stockAlertPage(HttpServletRequest request, HttpServletResponse response)throws Exception