程序包 org.springframework.web.servlet.mvc.support

接口 RedirectAttributes

  • 所有超级接口:
    Model
    所有已知实现类:
    RedirectAttributesModelMap
    public interface RedirectAttributes
extends Model
    A specialization of the Model interface that controllers can use to select attributes for a redirect scenario. Since the intent of adding redirect attributes is very explicit -- i.e. to be used for a redirect URL, attribute values may be formatted as Strings and stored that way to make them eligible to be appended to the query string or expanded as URI variables in org.springframework.web.servlet.view.RedirectView.

    This interface also provides a way to add flash attributes. For a general overview of flash attributes see FlashMap. You can use RedirectAttributes to store flash attributes and they will be automatically propagated to the "output" FlashMap of the current request.

    Example usage in an @Controller: 

     @RequestMapping(value = "/accounts", method = RequestMethod.POST)
 public String handle(Account account, BindingResult result, RedirectAttributes redirectAttrs) {
   if (result.hasErrors()) {
     return "accounts/new";
   }
   // Save account ...
   redirectAttrs.addAttribute("id", account.getId()).addFlashAttribute("message", "Account created!");
   return "redirect:/accounts/{id}";
 }

    A RedirectAttributes model is empty when the method is called and is never used unless the method returns a redirect view name or a RedirectView.

    After the redirect, flash attributes are automatically added to the model of the controller that serves the target URL.

    从以下版本开始:
    3.1
    作者:
    Rossen Stoyanchev