Java 提交表单后返回上一页（Spring/Hibernate）

我有一个餐厅编辑页面位于“/restaurant/edit/{id}”。从该页面，我可以（除其他外）通过按下“添加桌子”按钮向餐厅添加桌子。该按钮将我带到另一个页面，该页面位于“/restaurant/edit/{id}/table”。问题是，在我添加了表格之后，如何通过按下按钮返回到上一页？现在，我的控制器返回“editRestaurant.jsp”，这是正确的值，但我也不知道如何传递相同的餐厅id。我希望你明白我的意思

My RestaurantTableController.java：

@Controller
public class RestaurantTableController {

    @Autowired
    private RestaurantService restaurantService;

    @Autowired
    private RestaurantTableService restaurantTableService;

    @RequestMapping(value="restaurant/{id}/table", method = RequestMethod.GET)
    public String addRestaurantTable(Model model, @PathVariable Long id) {
        model.addAttribute("table", new RestaurantTable());
        return "newTable";
    }

    @RequestMapping(value = "restaurant/{id}/table", method = RequestMethod.POST)
    public String addRestaurantTableAction(@PathVariable Long id, @ModelAttribute ("table") RestaurantTable table, BindingResult result) {
        RestaurantTableFormValidator restaurantTableFormValidator = new RestaurantTableFormValidator();
        restaurantTableFormValidator.validate(table, result);
        if (result.hasErrors()) {
            return "newTable";
        }
        restaurantService.mergeRestaurant(id, table);
        return "editRestaurant";
    }

}

@RequestMapping(value = "restaurant/edit/{id}", method = RequestMethod.GET)
public String editRestaurant(@PathVariable Long id, Model model) {
    Restaurant restaurant = restaurantService.getRestaurant(id);
    model.addAttribute("restaurant", restaurant);
    return "editRestaurant";
}

@RequestMapping(value = "restaurant/edit/{id}", method = RequestMethod.POST, params="submit")
public String editRestaurant(@ModelAttribute ("restaurant") Restaurant restaurant, BindingResult result) {
    RestaurantFormValidator restaurantFormValidator = new RestaurantFormValidator();
    restaurantFormValidator.validate(restaurant, result);
    if (result.hasErrors()) {
        return "editRestaurant";
    }
    restaurantService.updateRestaurant(restaurant);
    return "redirect:/bookings";
}

我的“newTable.jsp”：

“editRestaurant.jsp”：

编辑
餐厅：
地址:
${item.toString（）}

可以使用不同的方法返回包含参数的模型。我相信这可以解决你的问题

@RequestMapping(value = "restaurant/edit/{id}", method = RequestMethod.GET)
      public String editRestaurant(@PathVariable Long id, Model model) {
      Restaurant restaurant = restaurantService.getRestaurant(id);
      return new ModelAndView("editRestaurant", "restaurant", restaurant);
}

---

您可以使用另一种方法返回包含参数的模型。我相信这可以解决你的问题

@RequestMapping(value = "restaurant/edit/{id}", method = RequestMethod.GET)
      public String editRestaurant(@PathVariable Long id, Model model) {
      Restaurant restaurant = restaurantService.getRestaurant(id);
      return new ModelAndView("editRestaurant", "restaurant", restaurant);
}

---

成功

POST

后，您应该执行重定向

大概是这样的：

return "redirect:/restaurant/edit/" + restaurant.getId();

或

---

成功

POST

后，您应该执行重定向

大概是这样的：

return "redirect:/restaurant/edit/" + restaurant.getId();

或

return new RedirectView("/restaurant/edit/" + restaurant.getId(), false);