How to turn on annotation driven validation in Spring 4?

Question

I am using the annotation validation as below:

    public String processRegistration(@Valid Spitter spitter, Errors errors,
            Model model) {
               


        

Answer 1

I see two points in your code that may cause de problem.

1) Instead of use the correct namespace .

2) On your @Controller change your functions parameters from:

   public String processRegistration(@Valid Spitter spitter, Errors errors,
        Model model) {
    if (errors.hasErrors()) {
        return "registerForm";
    }
    ...

To:

public String processRegistration(@ModelAttribute("spitter") @Valid Spitter spitter, BindingResult result) {

    if (result.hasErrors()) {
        return "registerForm";
    }
    ...

Try it! ;)