Spring MVC validation doesn't show error message

Question

I'm working on web application which should validate date before save it in DB. So i'm trying to use for that spring mvc validator. But I have a problem that form doesn't show error message.

My user.jsp:

<form:form class="editUser" method="POST" commandName="user">
    <form:input path="email"/>
    <form:errors path="email"/>
    other fields
</form>

My controller:

@RequestMapping(value = "/user/save", method = RequestMethod.POST)
public String save(@Valid @ModelAttribute("user") final User user,
        BindingResult result) throws Exception
{
    if (result.hasErrors()) {
        return "redirect:/addUser";
    } else {
        handler.saveUser(user);
        return "redirect:/userList";
   }
}

My User class:

public class User {
    @NotEmpty(message = "Please enter your email addresss.")
    private String email;

    other fields
}

As far as I see in debug mode result contains error if I submit empty email, but it error doesn't show on page. Could some one help me?

UPDATE: I have tried to use RedirectAttributes, but it still doesn't work.

My controller:

public String save(@Valid @ModelAttribute("user") final User user,
        BindingResult result) throws Exception
{
    if (result.hasErrors()) {
        redirectAttributes.addFlashAttribute("org.springframework.validation.BindingResult.user", result);
        redirectAttributes.addFlashAttribute("errors", result.getAllErrors());
        redirectAttributes.addFlashAttribute("user", user);
        return "redirect:/addUser";
    } else {
        handler.saveUser(user);
        return "redirect:/userList";
   }
}

score 3 · Accepted Answer · answered Jul 31 '14 at 10:59

3

Don't redirect in case of validation failed.

sample code:

public String save(@Valid @ModelAttribute("user") final User user,
        BindingResult result) throws Exception
{
    if (result.hasErrors()) {
        return "addUser";
    } else {
        handler.saveUser(user);
        return "redirect:/userList";
   }
}

answered Jul 31 '14 at 10:59

Braj

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But i have to, because my JSP is addUser.jsp and save method is mapped in addUser/save, so if i just use "addUser" it will be wrong behaviour. I have tried to use `RedirectAttributes`, but it doesn't work. – Vartlok Jul 31 '14 at 11:12
simply forward the request to the same page. – Braj Jul 31 '14 at 11:15
you can check this related question, it might provide an answer - perhaps your form is being reinitialised in the redirect, or using ModelAndView... http://stackoverflow.com/questions/2543797/spring-redirect-after-post-even-with-validation-errors – Richard G Feb 18 '15 at 16:43

Spring MVC validation doesn't show error message

1 Answers1