如何使用spring引导数据jpa在mysql中更新编码的密码

// 实体类
@Entity
@Table(name = "user")
public class User {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    private String username;

    private String password;

    // 省略getter和setter方法
}

// 数据访问接口
public interface UserRepository extends JpaRepository<User, Long> {
    User findByUsername(String username);
}

// 数据访问接口实现类
@Repository
public class UserRepositoryImpl implements UserRepository {
    @PersistenceContext
    private EntityManager entityManager;

    @Override
    public User findByUsername(String username) {
        // 使用JPA的方法查询用户信息
        // ...
    }
}

// 业务逻辑类
@Service
public class UserService {
    @Autowired
    private UserRepository userRepository;

    public void updatePassword(String username, String newPassword) {
        User user = userRepository.findByUsername(username);
        if (user != null) {
            // 更新密码
            user.setPassword(newPassword);
            userRepository.save(user);
        }
    }
}