A Foreign key refering com.wawagame.backend.trade.hbentity.ProductEntity from com.wawagame.backend.trade.hbentity.OrdersEntity has the wrong number of column. should be 2

当一个表里有双主键：

在进行多对一映射时：

当该表作为one的一方是时：

再多的一方的entity里用注解进行映射要关联两个主键：

例子如下：

OrdersEntity 多的一方

@Entity

@Table(name = "orders", schema = "", catalog = "game")

public class OrdersEntity {

@Id

@Column(name = "serialNumber")

private String serialNumber;

@Basic

@Column(name="userId")

private String userId;

@Basic

@Column(name = "appId")

private String appId;

@Basic

@Column(name = "productId")

private long productId;

@Basic

@Column(name = "quantity")

private long quantity;

@Basic

@Column(name = "price")

private long price;

@Basic

@Column(name = "status")

private byte status;

@Basic

@Column(name = "paymentPlat")

private String paymentPlat;

@Basic

@Column(name = "createTime")

private long createTime;

@Basic

@Column(name = "paymentTime")

private Long paymentTime;

@Basic

@Column(name = "totalPrice")

private long totalPrice;

@Basic

@Column(name = "clientIp")

private String clientIp;

@ManyToOne(fetch = FetchType.LAZY)

@JoinColumn(name = "appId",insertable = false,updatable = false)

private AppEntity appEntity;

@ManyToOne(fetch = FetchType.LAZY)

@JoinColumns({

@JoinColumn(name = "productId", insertable = false, updatable = false),

@JoinColumn(name = "appId", insertable = false, updatable = false)

})

private ProductEntity productEntity;

@ManyToOne(fetch = FetchType.LAZY)

@JoinColumn(name = "userid",insertable = false,updatable = false)

private UserEntity userEntity;

 

 PoductEntity一的一方

public class ProductEntityPK implements Serializable {

@Column(name="productId")

@Id

private long productId;

@Column(name="appId")

@Id

private String appId;

@Entity

@Table(name = "product", schema = "" , catalog = "game")

@IdClass(ProductEntityPK.class)

public class ProductEntity {

@Id

@Column(name = "appId")

private String appId;

@Id

@GeneratedValue

@Column(name = "productId")

private long productId;

@Basic

@Column(name = "productName")

private String productName;

@Basic

@Column(name = "productDesc")

private String productDesc;

@Basic

@Column(name = "price")

private long price;

@OneToMany(mappedBy = "productEntity",fetch = FetchType.LAZY)

private Set<OrdersEntity> ordersEntity = new HashSet<OrdersEntity>();

@ManyToOne(fetch = FetchType.LAZY)

@JoinColumn(name="appId",insertable = false, updatable = false)

private AppEntity appEntity;