Update operation in CRUD Repositoty

[st.kurilin]

Hi!
CRUD repo should have update operations, but there is only CUD. There is only "save" for update, should I use it?
Actually, I have next flow. In my Spring MVC Application I have edit method, it looks like

@RequestMapping(value = "/{id}", method = RequestMethod.POST)
    public String edit(@PathVariable("id") Long id, @Valid User user, BindingResult bindingResult) {
        if (bindingResult.hasErrors()) {
            user.setId(id);   //Very bad
            return "usersEdit";
        }
        user.setId(id);  //Bad
        repository.save(user);
        return "redirect:/users/" + id;
    }

But I completely dislike setting id. I think this is common usage of Spring MVC and Spring Data. Also I want to handle case which deleting user during editing. How I should solve such issue?