如何在springboot中使用单个api根据用户类型保存不同的用户？

@Entity
@Table(name = "users")
public class User {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    
    private String username;
    private String password;
    private String userType;
    
    // 省略构造方法、getter和setter
}

public interface UserRepository extends JpaRepository<User, Long> {
    List<User> findByUserType(String userType);
}

@RestController
@RequestMapping("/api/users")
public class UserController {
    @Autowired
    private UserRepository userRepository;
    
    @PostMapping
    public User saveUser(@RequestBody User user) {
        return userRepository.save(user);
    }
}

@PostMapping
public User saveUser(@RequestBody User user) {
    if (user.getUserType().equals("admin")) {
        // 保存管理员用户逻辑
    } else if (user.getUserType().equals("normal")) {
        // 保存普通用户逻辑
    }
    return userRepository.save(user);
}