}
@RequestMapping(value = "/save", method = RequestMethod.POST)
public String saveUser(@RequestParam String userId, @RequestParam String firstName,
@RequestParam String lastName, @RequestParam String email, @RequestParam String groupId) {
Group group = groupService.getGroup(Integer.parseInt(groupId));
User user = new User(Integer.parseInt(userId), firstName, lastName, email, group);
userService.saveUser(user);
return "redirect:users";
}