删除 spring 数据中的资源 rest hateoas with relationship

Question

我有餐厅的类别、项目和角色。我可以使用邮递员获取和 POST 请求，但是当我尝试删除 "category" 中的条目时，它给出了 204 - 没有内容，但数据仍然没有被删除。这是因为该类别与餐厅有多对一的关系。另一方面，如果我对角色执行 DELETE 请求，它可以完美运行，没有任何直接关系。

类别的 POJO

@Entity
@Table(name="Categories")
public class Category { 

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private int id;
    private String name;

    @ManyToOne
    @JoinColumn(name="restaurantId")
    private Restaurant restaurant;

    @OneToMany(mappedBy = "category", fetch = FetchType.EAGER, cascade = CascadeType.ALL)
    private Set<Item> items;

    public Category () {
    }

    @Autowired
    public Category(String name, Restaurant restaurant, Set<Item> items) {      
        this.name = name;
        this.restaurant = restaurant;
        this.items = items;
    }

    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public Set<Item> getItems() {
        return items;
    }
    public void setItems(Set<Item> items) {
        this.items = items;
    }
    public Restaurant getRestaurant() {
        return restaurant;
    }
    public void setRestaurant(Restaurant restaurant) {
        this.restaurant = restaurant;
    }
}

角色的 POJO

@Entity
@Table(name="Roles")
public class Role {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private int id;
    private String name;

    @OneToMany(mappedBy = "role", fetch = FetchType.EAGER, cascade = CascadeType.ALL)
    private Set<User> users;

    public Role() {
    }   

    @Autowired
    public Role(String name, Set<User> users) {     
        this.name = name;
        this.users = users;
    }
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public Set<User> getUser() {
        return users;
    }
    public void setUsers(Set<User> users) {
        this.users = users;
    }
}

类别存储库

public interface CategoryRepository extends CrudRepository<Category, Integer> {

}

在邮递员中删除请求

DELETE localhost:9090/api/categories/7
Content-type: text/uri-list 
Response: 204 no content

Answer 1

我也遇到过这个问题。请尝试为 OneToMany 注释添加以下参数

orphanRemoval = true

删除 spring 数据中的资源 rest hateoas with relationship

Delete resource in spring data rest hateoas with relationship

spring

one-to-many

hateoas

spring-data-rest

spring-boot