@RequestMapping("partnership") public void Partnership(Model model, Integer id) { List<Article> partnershipList = aboutService.getPartnershipList(); model.addAttribute("partnershiplist", partnershipList); if (id == null && partnershipList.size() > 0) { id = partnershipList.get(0).getId(); } model.addAttribute("classid", id); List<Article> partnershipOneContent = aboutService.getPartnershipOneContent(id); model.addAttribute("partnershiponecontent", partnershipOneContent); }