@RequestMapping(value = "/sach/list", method = RequestMethod.GET) public String hienThiDanhMucSach(Model model) { List<Sach> sachs = sachService.timTatCaCuonSach(); List<SachUI> sachUIs = SachMapper.convertToListSachUI(sachs); model.addAttribute("sachUIs", sachUIs); return WebConstant.views.DANH_MUC_SACH; }