加入三个表（休眠注释异常，一对多，的mappedBy）

我不能加入三个表。看到上面的图片。正如你所看到的，每个餐厅都可以有很多餐桌，每个餐桌都可以有很多预订。

餐厅实体：

@Entity 
@Table(name = "restaurant") 
public class Restaurant { 

    @Id 
    @Column(name = "id") 
    @GeneratedValue(strategy = GenerationType.IDENTITY) 
    private Long id; 
    @Column(name = "name") 
    private String name; 
    @Column(name = "aadress") 
    private String aadress; 

    @OneToMany(mappedBy = "restaurant") 
    private List<RestaurantTable> restaurantTables; 
}

RestaurantTable实体：

@Entity 
@Table(name = "restaurant_table") 
public class RestaurantTable { 

    @Id 
    @Column(name = "id") 
    @GeneratedValue(strategy = GenerationType.IDENTITY) 
    private Long id; 

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

    @Column(name = "number") 
    private int number; 
    @Column(name = "count") 
    private int count; 

    @OneToMany(mappedBy = "restaurant_table") 
    private List<Booking> bookings; 
}

预定实体：

@Entity 
@Table(name = "booking") 
public class Booking { 

    @Id 
    @Column(name = "id") 
    @GeneratedValue(strategy = GenerationType.IDENTITY) 
    private Long id; 

    @ManyToOne 
    @JoinColumn(name = "restaurant_table_id") 
    private RestaurantTable restaurantTable; 

    ... 
}

休眠注释异常：

org.hibernate.AnnotationException: mappedBy reference an unknown target entity property: Booking.restaurant in RestaurantTable.bookings

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来源

2016-04-03 fanatus

在RestaurantTable

@OneToMany(mappedBy = "restaurant_table") 
private List<Booking> bookings;

你是指物业的预订＃restaurant_table，但在预定实体类这个属性被命名为restaurantTable：

@ManyToOne 
@JoinColumn(name = "restaurant_table_id") 
private RestaurantTable restaurantTable;

变化实体餐厅表

@OneToMany(mappedBy = "restaurantTable")

来源

2016-04-07 12:42:01 MirandaVeracruzDeLaHoyaCardina

加入三个表（休眠注释异常，一对多，的mappedBy）

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