Question

我有表格和验证工作。添加url参数时会出现此问题。 url参数是一个标记，是必需的。所以这就是我的控制器的样子：

@RequestMapping(value = "/resetpassword", method = RequestMethod.GET)
public String showResetForm(ResetPassword resetPassword, Model model,
        @RequestParam(value = "token", required = true) String token,
        @RequestParam(value = "msg", required = false) String msg){     

        model.addAttribute("token", token);

    return "resetpassword";
}

@RequestMapping(value = "/resetpassword", method = RequestMethod.POST)
public String setPwd(@ModelAttribute("resetPassword") @Valid ResetPassword resetPassword,// RedirectAttributes reDirectAttr,
                     BindingResult bindingResult, Model model,
                     @RequestParam(value = "token", required = true) String token,
                     @RequestParam(value = "msg", required = false) String msg){

    if (bindingResult.hasErrors()) {
            //reDirectAttr.addFlashAttribute("org.springframework.validation.BindingResult.resetPassword",bindingResult);
            //reDirectAttr.addFlashAttribute("resetPassword",resetPassword);            
        return "resetpassword?token="+token;
    } 
    else {          
        if (token == null) {
            // TODO: no token, what to do here??
            return "redirect:/resetpassword?token=\"\"&msg=notoken";
        }
        ResetPasswordResponseDto response = super.resetUserPassword(
                resetPassword.getUname(), resetPassword.getPassword(),
                token);
        if (response.getPasswordResetResult() == PasswordResetResult.SUCCESSFUL) {
            // TODO: it worked, what now?
            return "redirect:/login";
        } else if (response.getPasswordResetResult() == PasswordResetResult.INVALID_TOKEN) {
            // TODO: bad token
            return "redirect:/resetpassword?token="+token+"&msg=badtoken";
        } else if (response.getPasswordResetResult() == PasswordResetResult.OUT_OF_POLICY_PW) {
            // TODO: out of policy pw
            return "redirect:/resetpassword?token="+token+"&msg=outofpolicy";
        } else if (response.getPasswordResetResult() == PasswordResetResult.LDAP_FAILURE) {
            // TODO: other failure
            return "redirect:/resetpassword?token="+token+"&msg=error";
        }
    }
    return "redirect:/resetpassword?token="+token+"&msg=error";
    //return new RedirectView("resetpassword?token=\"\"&msg=notoken");
}

所以我尝试了很多东西但似乎没什么用。当请求视图/ resetpassword时，我希望发生这种情况？token = 1232453显示视图。然后，如果表单有错误，url参数将保留在url中，并且表单会显示错误。现在我收到一个错误，说模板无法解析。好吧，所以我尝试重新定向

return "redirect:/resetpassword?token="+token;

这似乎有效，但URL参数丢失，视图丢失bindingResult错误。在代码中，我发布了我也尝试了FlashAttributes，但我只是得到一个错误＆＃34;对象=＆＃39; resetPassword＆＃39;验证失败。错误计数：4＆＃34;这是正确的，但我需要它来显示我用Thymeleaf编码的形式和错误。任何帮助或建议都会很棒！

我看过的资源： Spring - Redirect after POST (even with validation errors) ＆安培; SpringMVC controller: how to stay on page if form validation error occurs

Answer 1

您是否尝试过返回ModelAndView而不仅仅是重定向字符串？模型上的属性将作为URL查询参数提供。

ModelAndView redirect = new ModelAndView("redirect:/resetpassword");
redirect.addObject("token", token);
redirect.addObject("msg", "error");
return redirect;

SpringBoot / MVC＆amp;使用URL参数在POST上进行Thymleaf表单验证

1 个答案: