同时，我们需要使用@JoinColumn注解来指定外键列的名称。...@GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; // 其他属性 @OneToOne @JoinColumn...@Entitypublic class Many { @Id private Long id; // 其他属性 @OneToOne @MapsId @JoinColumn...通过@JoinColumn注解的name属性，我们指定了外键列的名称，确保与主实体类中的外键列名称保持一致。接下来，我们将给出一个示例来说明如何使用基于外键映射的一对一关联关系。...通过@JoinColumn注解的name属性，我们指定了外键列的名称，确保与主实体类中的外键列名称保持一致。通过以上的基于外键映射的一对一关联关系，我们可以轻松地进行关系操作。
@Entity public class Customer implements Serializable { @OneToOne(cascade = CascadeType.ALL) @JoinColumn...如果没有@JoinColumn注解，则系统自动处理，在主表中将创建连接列，列名为：主题的关联属性名 + 下划线 + 被关联端的主键列名。...(name="customer_fk"), inverseJoinColumns = @JoinColumn(name="passport_fk") ) public Passport getPassport...(name="FLIGHT_ID"), inverseJoinColumns = @JoinColumn(name="COMP_ID") ) public Company getCompany() {...//no bidir } 一般通过连接表来实现这种关联，可以通过@JoinColumn注解来描述这种单向关联关系。
private String employeeName; //员工名称 @ManyToOne(fetch = FetchType.EAGER) @JsonIgnore // @JoinColumn...如 因为那里有多个@JoinColumns使用相同的列名（user_id） 为每个JoinColumns（在注释中的name参数中定义）设置一个不同的名称： @OneToOne @JoinColumn(...name = "local_user_id") public User getUser() { return user; } @OneToOne @JoinColumns({@JoinColumn...(name = "userId", referencedColumnName = "userId"), @JoinColumn(name = "providerId", referencedColumnName...= "providerId"), @JoinColumn(name = "providerUserId", referencedColumnName = "providerUserId
2、OneToOne && ManyToOne @OneToOne(……) @JoinColumn({ name: 'abc_abc'}) foriegnObj: ForiegnObj...; @ManyToOne(……) @JoinColumn({ name: 'abc_abc'}) foriegnObj: ForiegnObj; OneToOne和 ManyToOne...在同样的条件下会指定对应的外键，直接通过JoinColumn的name属性来控制外键名称。...@JoinTable({name:'tableName' , joincolumn:{...pointtable_id' }}) foriegnObjs: ForiegnObj[]; 多对多属性进行字段编辑的时候一定要注意以下几点： 1、joincolumn
CascadeType.ALL | 以上四种策略 无 | 默认值 因为这四种注解只能表示实体之间几对几的关系，指定与所操作实体相关联的数据库表中的列字段，就需要用到 @JoinColumn 注解。...@OneToOne @JoinColumn(name = "pwd_id") private Password pwd; 也可以不使用 @JoinColumn，Hibernate 会自动在用户表生成关联字段...，其实它本质上是 @Id 与 @JoinColumn(name = "...") 的组合体。...@JoinColumn(name = "department_id") 3....@JoinColumn 注解。
javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; import javax.persistence.JoinColumn...public void setQuestion(String question) { this.question = question; } @ManyToOne @JoinColumn...cid; } public void setCid(TeachClass cid) { this.cid = cid; } @ManyToOne @JoinColumn...} public void setHftime(Date hftime) { this.hftime = hftime; } @ManyToOne @JoinColumn...public void setUserid(User userid) { this.userid = userid; } @ManyToOne @JoinColumn
(name="permissionId")},inverseJoinColumns={@JoinColumn(name="roleId")}) private List roles...(name="roleId")},inverseJoinColumns={@JoinColumn(name="permissionId")}) private List permissions; // 用户 - 角色关系定义; @ManyToMany @JoinTable(name="SysUserRole",joinColumns={@JoinColumn...(name="roleId")},inverseJoinColumns={@JoinColumn(name="uid")}) private List userInfos;/...(name = "uid") }, inverseJoinColumns ={@JoinColumn(name = "roleId") }) private List roleList
// 省略getter和setter}@Entitypublic class Passport { @Id private Long id; @OneToOne @JoinColumn...Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; @ManyToOne @JoinColumn...private Long id; @ManyToMany @JoinTable( name = "student_course", joinColumns = @JoinColumn...(name = "student_id"), inverseJoinColumns = @JoinColumn(name = "course_id") ) private Set
(name = "menuId")}, inverseJoinColumns = {@JoinColumn(name = "roleId")}) private List roleList...(name = "roleId")}, inverseJoinColumns = {@JoinColumn(name = "menuId")}) private List menuList...; //多对多关系 @ManyToMany @JoinTable(name = "SysUserRole", joinColumns = {@JoinColumn(name =..."roleId")}, inverseJoinColumns = {@JoinColumn(name = "userId")}) private List userList;...(name = "userId")}, inverseJoinColumns = {@JoinColumn(name = "roleId")}) private List
/** * 上级资源 */ @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "PARENT_ID", referencedColumnName...= "PK_ID") private SysResource parentResource; hibernate中进行外键关联时，如果joinColumn没有指定关联外键，默认情况下是主键，如果要设定别的字段来进行关联
usernote表----（多对1） 1：将usernote实体类进行hibernate映射 2：在note实体类中，增加属性值和注解，并将原有userId属性注释 @ManyToOne @JoinColumn...OneToMany（1对多） 表结构： usernote表------note表---（1对多） 1：在usernote实体类中，增加集合list属性值和注解 @OneToMany @JoinColumn
@JoinColumn用于配置外键列，name属性用于指定外键列的列名，Hibernate将会在userinfo表中增加一个字段用做外键列。...@JoinColumn依然用于配置外键列。 对比着表中的各个字段，再次体会下上述注解中的属性的各个值的意义。 ?...这里的@JoinColumn是不一样的，它将生成一个外键字段，但不是生成在本实体类所代表的数据表中，而是生成在被关联的数据表中。...(name = "user_id",referencedColumnName = "user_id"), inverseJoinColumns = @JoinColumn(name...(name = "hobby_id",referencedColumnName = "hobby_id"), inverseJoinColumns = @JoinColumn(name
再接下来看一组多表的查询 栗子2： 这里有4张表 public class Living { Long id; @ManyToOne @JsonIgnore @JoinColumn...value =ConstraintMode.NO_CONSTRAINT)) public Actor actor; @ManyToOne @JsonIgnore @JoinColumn...cascade = { CascadeType.PERSIST, CascadeType.MERGE, CascadeType.REFRESH }, fetch = FetchType.LAZY) @JoinColumn...CascadeType.REFRESH }, fetch = FetchType.LAZY) @org.hibernate.annotations.ForeignKey(name = "none") @JoinColumn...cascade = { CascadeType.PERSIST, CascadeType.MERGE, CascadeType.REFRESH }, fetch = FetchType.LAZY) @JoinColumn
javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; import javax.persistence.JoinColumn...GenerationType.IDENTITY) private int id; @ManyToOne(fetch = FetchType.EAGER, cascade = CascadeType.ALL) @JoinColumn...private Teacher teacher; @ManyToOne(fetch = FetchType.EAGER, cascade = CascadeType.ALL) @JoinColumn...(name = "s_id") private Student student; @JoinColumn() @Column(nullable=true,name="impression_score
此时使用@JoinColumn属性。...one方 @OneToMany @JoinColumn(name="obj_id") private List manyObject; many方 @ManyToOne...(fetch=FetchType.EAGER,cascade=CascadeType.ALL) @JoinColumn(name="obj_id") private OneObject object...方法二：利用OneToMany注解里面的mappedBy属性 @OneToMany(mappedBy = "object") // @OneToMany // @JoinColumn(name...="obj_id") private List manyObject; 注意mappedBy不能与@JoinColumn注解连用 ?
** * */ private static final long serialVersionUID = -2500499458196257167L; @Id @OneToOne @JoinColumn...@JoinColumn(name = "member_id",referencedColumnName="member_id") 8.3.1.10....若有多个cascade，可以是：{CascadeType.PERSIST,CascadeType.MERGE} @ManyToOne(cascade = { CascadeType.ALL }) @JoinColumn...password; @ManyToMany(fetch = FetchType.EAGER) @JoinTable(name = "user_has_role", joinColumns = { @JoinColumn...(name = "user_id", referencedColumnName = "id") }, inverseJoinColumns = { @JoinColumn(name = "role_id
COMMENT '更改时间'") public Date mtime; @ManyToOne(cascade = { CascadeType.PERSIST, CascadeType.REMOVE }) @JoinColumn...COMMENT '更改时间'") public Date mtime; @ManyToOne(cascade = { CascadeType.PERSIST, CascadeType.REMOVE }) @JoinColumn..."id") private Category category; @ManyToOne(cascade = { CascadeType.PERSIST, CascadeType.REMOVE }) @JoinColumn...password; @ManyToMany(fetch = FetchType.EAGER) @JoinTable(name = "user_has_role", joinColumns = { @JoinColumn...(name = "user_id", referencedColumnName = "id") }, inverseJoinColumns = { @JoinColumn(name = "role_id
javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.FetchType; import javax.persistence.JoinColumn...FetchType.LAZY, cascade = (CascadeType.REMOVE)) @JoinTable(name = "sys_user_role", joinColumns = { @JoinColumn...(name = "user_id") }, inverseJoinColumns = { @JoinColumn(name = "role_id") }) public List getRoles...@ManyToOne(cascade = { CascadeType.PERSIST, CascadeType.MERGE }, fetch = FetchType.LAZY) @JoinColumn
private Set users; @ManyToMany @JoinTable(name="t_auth_user_role",joinColumns={@JoinColumn...(name="role_id")},inverseJoinColumns={@JoinColumn(name="user_id")})//配置一方 public Set getUsers
; import javax.persistence.GeneratedValue; import javax.persistence.Id; import javax.persistence.JoinColumn...public void setId(int id) { this.id = id; } @OneToOne //设置wife的主键为Husband的外键，默认的对应表中的字段为wife_id @JoinColumn...(name="st_id"),inverseJoinColumns=@JoinColumn(name="t_id")) public Set getTeachers() { return...注解 inverseJoinColumns指定的是另外一个实体类的外键名称，其中的值使用的是@JoinColumn注解 通过老师访问学生的信息 那么需要在Teacher类中添加一个成员变量的类型为Student...(name="st_id"),inverseJoinColumns=@JoinColumn(name="t_id")) public Set getTeachers() { return
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