Hibernate @Valid在SpringMVC中的奇怪行为

Question

First, I'm very new to this, sorry if this question is dumb. I have two controllers with class request mappings and form to validate:

@Controller
@RequestMapping("/creditcard")
public class CreditCardController {
    @Autowired
    //repositories

    @RequestMapping(value = "/addnewcard", method = RequestMethod.POST)
    public String addNew(
             @ModelAttribute("newCard") @Valid CreditCard creditCard,
            BindingResult bindingResult, Principal principal, Model model) {
        if (bindingResult.hasErrors()) {
            //render error view
        }
        creditCardService.registerNew(creditCard, principal.getName());
        return "redirect:/account";
    }

Another

@Controller
@RequestMapping("/account")
public class AccountController {
    @Autowired
    //repo

    @RequestMapping("")
    public String showUserProfile(Principal principal, Model model) {
        String username = principal.getName();
        User user = userService.findByUsername(username);
        Account account = user.getAccount();
        List<Payment> payers = paymentService
                .getAllPaymentsForPayerAccount(account.getId());
        model.addAttribute("user", user);
        model.addAttribute("account", account);
        model.addAttribute("payers", payers);
        return "userprofile";
    }
}

Form on userprofile.jsp

<form:form cssClass="form-horizontal" modelAttribute="newCard" action="creditcard/addnewcard">
........
</form:form>

And all this works without @Valid . When I add @Valid it works fine, when validation fails ( shows error view with messages), but when it succeeds I get 404 error due to incorrect URI - http://localhost:8080/PaymentSystem/creditcard/creditcard/addnewcard . Here one /creditcard is extra, @Valid somehow adds this to my URI. I found to ways for me to solve this: 1) I moved addNew card method to 'AccountController'

2) I just removed @RequestMapping("/creditcard")

But still I do not found any explanation of such behaviour. Any idea?

Answer 1

I found 3rd way to solve this issue, most suitable in this situation. I just added ${pageContext.request.contextPath} to my action param like this:

<form:form cssClass="form-horizontal" modelAttribute="newCard" action="${pageContext.request.contextPath}/creditcard/addnewcard">
........
</form:form>

But still it don't know the reason of that kind of @Valid behaviour.