@RequestMapping(value = {"/index"},method = RequestMethod.GET) public String showHomePage(Model model) { model.addAttribute("itemGroup", new ItemGroup()); return "index"; } @RequestMapping(value = {"/index"},method = RequestMethod.POST) public String onSubmit(@ModelAttribute("itemGroup") ItemGroup itemGroup, Model model) { model.addAttribute("itemGroupImage",itemGroupService.showJobGroupImage(itemGroup.getValue())); return "itemGroupView"; }