java - 如何在 Spring 将模型作为重定向属性传递

redirectModel.addAttribute("Model", model);
return REDIRECT_PREFIX + "../../my-company/organization-management/manage-users";

通过此方法时，我得到转换异常：无法将list<?>转换为string

最佳答案

i）将RedirectAttributes redirectAttributes添加到第一个控制器中的方法参数列表中

public String test(
                @ModelAttribute("userModel") final Object UserModel,
                final BindingResult bindingResult,
                final Model model,
                final RedirectAttributes redirectAttributes)
    ii) Inside the method added code to add flash attribute to redirectAttributes
redirectAttributes.addFlashAttribute("userModel", mapping1FormObject);

iii）然后，在第二个控制器中，使用带有@ModelAttribute注释的方法参数来访问重定向属性

@ModelAttribute("userModel") final Object userModel

最后，您的两个控制器方法如下所示：
// Controller1

@RequestMapping(value = { "/page1" }, method = RequestMethod.POST)
        public String test1(
                @ModelAttribute("userModel") final Object userModel,
                final BindingResult bindingResult,
                final Model model,
                final RedirectAttributes redirectAttributes) {

            redirectAttributes.addFlashAttribute("userModel", mapping1FormObject);

            return "redirect:page2";
        }
//Controller2


@RequestMapping(value = "/page2", method = RequestMethod.GET)
        public String test2(
                @ModelAttribute("userModel") final Object userModel,
                final BindingResult bindingResult,
                final Model model) {


            return "new/view";
        }