java - Spring Boot ManyToMany 保留嵌套数据

Question

我目前正在开发我的第一个 Spring boot 应用程序，我试图在两个实体之间保留多对多关系。目前，我在尝试将实体保存到我的端点时遇到错误。

用户实体

@Getter
@Setter
@AllArgsConstructor
@NoArgsConstructor
@Entity
@Table(name = "users")
public class User {
    @Id
    @GeneratedValue(generator = "uuid")
    @GenericGenerator(name = "uuid", strategy = "uuid2")
    @Column(length = 16) 
    @ApiModelProperty(required = false, hidden = true)
    private UUID uuid = UUID.randomUUID();

    @Column(name = "name") 
    private String name;

    @ManyToMany
    @JoinTable(
            name = "game_participants",
            joinColumns = { @JoinColumn(name = "user_id") },
            inverseJoinColumns = { @JoinColumn(name = "game_id") }
    )
    private List<Game> games;
}

游戏实体

@Getter
@Setter
@AllArgsConstructor
@NoArgsConstructor
@Entity
@Table(name = "game")
public class Game {
    @Id
    @GeneratedValue(generator = "uuid") 
    @GenericGenerator(name = "uuid", strategy = "uuid2")
    @Column(length = 16) 
    @ApiModelProperty(required = false, hidden = true)
    private UUID uuid = UUID.randomUUID();

    @Column(name = "name") 
    private String name;

    @ManyToMany(mappedBy = "games")
    private List<User> users;
}

我正在使用 OpenAPI(swagger)，我正在尝试保存一个新的“游戏”实体。我的问题是，它期望获得如下结构的有效负载:

{
  "name": "string",
  "users": [
    {
      "games": [
        null
      ],
      "name": "string"
    }
  ]
}

我真的不明白为什么它在我的用户实体中嵌套另一个游戏实体。我真正想要实现的是这样的:

{
  "name": "string",
  "users": [
    {
      "name": "string"
    }
  ]
}

Answer 1

实现

{
"name": "string",
"users": [
{
  "name": "string"
}
         ]
}

删除

@ManyToMany(mappedBy = "games")
private List<User> users;

来自游戏类。但是这样您就无法从游戏对象中引用用户。