@RequestMapping("/register")
    public String register(@ModelAttribute User user,BindingResult result){
       if(!result.hasErrors()){
         userSerive.register(user);
       }
     return "welcome";
}

@RequestMapping("/register")
    public String register(User user,BindingResult result){
       if(!result.hasErrors()){
         userSerive.register(user);
       }
     return "welcome";
}