使用Mybatis-Plus报错Index 1 out of bounds for length 1

@Transactional
@PostMapping("/ddd")
@ApiOperation("测试")
public RespBean ddd(){
    userTestService.save(new UserTest(null,"Name","123456","userName", LocalDateTime.now(),null));
    UserTest userTest = userTestService.getOne(new QueryWrapper().select("MAX(id) AS id"));
    return RespBean.success("成功",userTest);
}

我们使用new QueryWrapper()会调用UserTest中的无参构造函数，但是由于我们定义了有参构造函数，导致@Data自动生成的无参构造函数没有了，需要手动添加无参构造函数或者使用@NoArgsConstructor注解

@AllArgsConstructor
@Data
@EqualsAndHashCode(callSuper = false)
@Accessors(chain = true)
@TableName("user_test")
@ApiModel(value="UserTest对象", description="")
public class UserTest implements Serializable {

    private static final long serialVersionUID = 1L;

    @TableId(value = "id", type = IdType.AUTO)
    private Integer id;

    private String username;

    private String password;

    private String nickName;

    private LocalDateTime createTime;

    private LocalDateTime updateTime;
    
}