Using both JSR-303 and Traditional Bean Validation?

Question

Is it possible to use both JSR-303 bean validation and traditional validation (a single validator class for the type) in Spring? If so, what configuration is required to se

Answer 1

I realise this is quite old, but I got this to work with minimal disturbance to my code

Change binder.setValidator(new DualEntryValidator());

to

@InitBinder
protected void initBinder(WebDataBinder binder) {
    binder.addValidators(new DualEntryValidator());
}

With setValidator() you're replacing the JSR-303 validator with your one. With addValidator(), the JSR-303 validator is called and so is yours.

You need to make sure that your validator does not overlap with your JSR-303 @NotNull, @Min, @Max, etc. annotations otherwise you'll get duplicate error messages added.