@ResponseBody
	@RequestMapping(value = "/login", method = RequestMethod.POST)		// post pe /login
	public ResponseEntity<User> login(@RequestBody User user, HttpSession session) {	// in body tre sa ai un json cred de User
		User userFromDB = userService.login(user);									// gen { username : username,  password : password}
		if (userFromDB != null) {
			session.setAttribute("userId", userFromDB.getId());
			return new ResponseEntity<User>(userFromDB, HttpStatus.OK);		//returnezi tot un json tip User
		} else {
			return new ResponseEntity<User>(new User(), HttpStatus.BAD_REQUEST);
		}
	}