QueryDSL SpringBoot分组

Question

我是spring boot的新手，试图完成以下任务

数据表：

FurnitureHeight    FurnitureWidth    FurnitureDepth
20                 35                80
20                 45                83
45                 102               90
45                 35                90
45                 67                99

预期输出：

20: {
  width:[35,45],
  depth:[80,83]
 }
45: {
  width:[35,102,67],
  depth:[90,99]
 }

我的实体类如下

public class FurnitureSpecification {

  @Id
  @GeneratedValue(strategy = GenerationType.IDENTITY)
  private Long id;

  @Column(name = "furnitureheight")
  @JsonProperty("furnitureheight")
  @Getter
  private Integer furnitureheight;

  @Column(name = "furniturewidth")
  @JsonProperty("furniturewidth")
  private Integer furniturewidth;

  @Column(name = "furnituredepth")
  @JsonProperty("furnituredepth")
  private Integer furnituredepth;
}

感谢大家对分组工作原理的任何参考，感谢所有帮助