Redirecting with URL templates

@RequestMapping(value = "save")
public String saveDutyRelation(HttpServletRequest request, DutyRelation dutyRelation, Model model) throws Exception {try {requireNonNull(dutyRelation.getId(), "ID不能为空");requireNonNull(dutyRelation.getDutyCode(), "职务编码不能为空");dutyRelationService.updateById(dutyRelation, dutyRelation.getId());result.setMessageSuccess("保存成功");} catch (BusinessException e) {result.setCode(e.getCode());result.setMessage(e.getMessage());}model.addAttribute("username", dutyRelation.getId());model.addAttribute("id", dutyRelation.getId());model.addAttribute("code", dutyRelation.getDutyCode());return "redirect:/dutyRelation/{username}";
}

重定向的地址是：http://**/dutyRealtion/username?id=某个值&code=某个值

Working with flash attrbutes

@RequestMapping(value = "save")
public String saveDutyRelation(HttpServletRequest request, DutyRelation dutyRelation, RedirectAttributes attributes) throws Exception {result = new Result();try {requireNonNull(dutyRelation.getId(), "ID不能为空");requireNonNull(dutyRelation.getDutyCode(), "职务编码不能为空");dutyRelationService.updateById(dutyRelation, dutyRelation.getId());result.setMessageSuccess("保存成功");} catch (BusinessException e) {result.setCode(e.getCode());result.setMessage(e.getMessage());}attributes.addAttribute("username",  dutyRelation.getId());attributes.addFlashAttribute(dutyRelation); // 可以根据类型推断 key 是 “dutyRelation”return "redirect:/dutyRelation/{username}";
}

原理：Flash attrbutes are stored in the session and then retrieved into the modal, surviving a redirect