我最近遇到了这个问题。我有一个产品，它有一个与体积有关的值列表。示例：在此处输入图像描述实体：

public class Price implements Serializable, Comparable<Price> {

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

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "product_id")
    private Product product;

    private int valume;
    private int cost;

    @Override
    public int compareTo(Price o) {
        if (this.valume > o.getValume()) {
            return 1;
        } else if (this.valume < o.getValume()) {
            return -1;
        } else {
            return 0;
        }
    }

}

public class Product implements Serializable {

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

    private String name;
    private String description;
    private LocalDateTime data;

    @OneToMany(targetEntity = Price.class, mappedBy = "product",
            cascade = CascadeType.ALL)
    @LazyCollection(LazyCollectionOption.FALSE)
    private List<Price> price = new ArrayList<>();    

}

控制器：

@GetMapping
    public String tapePage(@PageableDefault(size = 12, sort = "data", direction = Sort.Direction.DESC) Pageable pageable,
            Model model){
        model.addAttribute("products", productService.getAllProducts(pageable));
        return "tape";
    }

问题是，如果我想按成本对产品进行排序，我将得到具有多个值的重复对象。示例- http://localhost:8080/?sort=price.valume,ASC 我如何实现一个请求，将发行不同价格的非重复产品。例如： http://localhost:8080/?sort=price[0].valume,ASC