java - 如何通过 Controller POST 请求更新 View 中的某些属性

Question

我正在开发一个旧的 Spring 项目，我想根据我的发布请求更新 View 中的某些字段。

我尝试了以下方法，但没有成功:

@RequestMapping(value="/dashboard/{calories}", method=RequestMethod.POST)
public void updateCals (@PathVariable Long calories, Model model, HttpSession session, HttpServletRequest request, HttpServletResponse response) {
            request.getSession().setAttribute("tea", tea);
    model.addAttribute("tea", tea);
}

我应该在末尾添加返回或重定向吗？任何帮助将不胜感激

Answer 1

返回重定向:

@RequestMapping(value="/dashboard/{calories}", method=RequestMethod.POST)
public void updateCals (@PathVariable Long calories, Model model, HttpSession session, HttpServletRequest request, HttpServletResponse response) {
            request.getSession().setAttribute("tea", tea);
            model.addAttribute("tea", tea);
            return "redirect:/example";  
}