如何解决将数据添加到多对多关系mySQL java springboot
我在MySQL,用户,机构和角色中有3个表
1)用户与机构之间的一对多关系(一个用户可以在一个机构工作,而一个机构可以有很多用户) 2)角色与用户之间的多对多关系 数据库中的机构已经插入,用户只能在特定的现有机构中工作。 并且数据库中的角色已经插入,并且用户只能具有现有角色。 我为用户和机构手动向数据库添加了7个角色。
我想添加一个用户并在API请求中指定他的角色,但这无法正常工作。
---------用户模型---------
@Getter
@Setter
@NoArgsConstructor
@AllArgsConstructor
@ToString
@Entity
@Table(name = "user")
public class User {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name="user_Id")
private int userId;
@Column(name="name")
private String name;
@Column(name="lastname")
private String lastname;
@Column(name="email")
private String email;
@Column(name="password")
private String password;
@Column(name="isActive")
private boolean isActive;
@Column(name="lastActive")
private String lastActive;
@Column(name="createdDate")
private String createdDate;
@Column(name="isBlocked")
private boolean isBlocked;
@ManyToOne(fetch = FetchType.LAZY,optional = false)
@JoinColumn(name = "institution_id",nullable = false)
private Institution institution;
@ManyToMany(fetch = FetchType.LAZY,cascade = CascadeType.PERSIST)
@JoinTable(name = "user_has_role",joinColumns = {
@JoinColumn(name = "user_id",referencedColumnName = "user_id",nullable = false,updatable = true)},inverseJoinColumns = {
@JoinColumn(name = "role_id",referencedColumnName = "role_id",updatable = true)})
private Set<Role> roles = new HashSet<>();
}
--------角色模型------------
@Getter
@Setter
@NoArgsConstructor
@AllArgsConstructor
@ToString
@Entity
@Table(name = "role")
public class Role {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name="role_Id")
private int roleId;
@Column(name="name")
private String name;
@Column(name="description")
private String description;
@ManyToMany(mappedBy = "roles",fetch = FetchType.LAZY)
private Set<User> users = new HashSet<>();
}
----------机构模型------------
@Getter
@Setter
@NoArgsConstructor
@AllArgsConstructor
@ToString
@Entity
@Table(name = "institution")
public class Institution {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name="institution_Id")
private int institutionId;
@Column(name="name")
private String name;
@Column(name="type")
private String type;
@Column(name="location")
private String location;
@OneToMany(mappedBy = "institution",fetch = FetchType.LAZY)
private Set<User> user;
}
--------控制器-----------
@PostMapping("/addUser")
public String addUser(@RequestBody User user) {
userrepository.save(user);
return "user saved with name: " + user.getName();
}
---------我的api请求---------
{
"name": "user1","lastname": "lastname","email": "user1@hotmail.com","password": "user1123","lastActive": "02/01/20","createdDate": "06/05/19","institution": {
"institutionId": 3
},"roles": [
{
"role_id": 2
}
],"active": true,"blocked": false
}
但这无法正常工作,它使用空字段创建了新角色... 我只需要将它添加到user_has_role表中,即可将user_id和role_id的对应ID 请帮助
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