在Hibernate中更改生成的外键名称

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@OneToOne（） @JoinColumn（name =vehicle_id，referencedColumnName =vehicleId） public Vehicle getVehicle（）{ return车辆; $ b我的UserDetails类与Entitity类Vehicle 。 Hibernate 创建2个表并分配一个通用外键，该外键将vehicle_id列（UserDetails表）映射到主键vehicleId（Vehicle table）。

KEY FKB7C889CEAF42C7A1（vehicle_id）， CONSTRAINT FKB7C889CEAF42C7A1 FOREIGN KEY（vehicle_id）REFERENCES vehicle（vehicleId） 从JPA 2.1开始，您可以使用

解决方案

javax / persistence / ForeignKey.htmlrel =noreferrer> @ javax.persistence.ForeignKey 注释：

@OneToOne（） @JoinColumn（name =vehicle_id，referencedColumnName =vehicleId，foreignKey = @ ForeignKey（name =Fk_userdetails_vehicle）） public Vehicle getVehicle（）{ return车辆; }

在JPA 2.1之前，可以使用Hibernate的 @ org.hibernate.annotations.ForeignKey 注释，但现在已被弃用：

@OneToOne（） @JoinColumn（name =vehicle_id，referencedColumnName = vehicleId） @ForeignKey（name =Fk_userdetails_vehicle） public Vehicle getVehicle（）{ return vehicle; }

@OneToOne() @JoinColumn(name="vehicle_id", referencedColumnName="vehicleId") public Vehicle getVehicle() { return vehicle; }

My UserDetails class has a one-to-one mapping with the Entitity class Vehicle. Hibernate creates the 2 tables and assigns a generic Foreign Key, which maps the vehicle_id column (UserDetails table.) to the primary key vehicleId (Vehicle table).

KEY FKB7C889CEAF42C7A1 (vehicle_id), CONSTRAINT FKB7C889CEAF42C7A1 FOREIGN KEY (vehicle_id) REFERENCES vehicle (vehicleId)

My question is : how do we change this generated foreign key, into something meaningful, like Fk_userdetails_vehicle for example.

解决方案

Since JPA 2.1, you can use the @javax.persistence.ForeignKey annotation:

@OneToOne() @JoinColumn(name="vehicle_id", referencedColumnName="vehicleId", foreignKey=@ForeignKey(name = "Fk_userdetails_vehicle")) public Vehicle getVehicle() { return vehicle; }

Prior to JPA 2.1, you could use Hibernate’s @org.hibernate.annotations.ForeignKey annotation, but this is now deprecated:

@OneToOne() @JoinColumn(name="vehicle_id", referencedColumnName="vehicleId") @ForeignKey(name="Fk_userdetails_vehicle") public Vehicle getVehicle() { return vehicle; }