Question

编译时出现此错误。在测试中我没问题。

我有javax.xml.bind，jaxb-api的依存关系。

错误：

原因：org.springframework.beans.factory.BeanCreationException：创建类中定义的名称为'entityManagerFactory'的bean时出错路径资源 [org / springframework / boot / autoconfigure / orm / jpa / HibernateJpaConfiguration.class]：调用init方法失败；嵌套异常为 org.hibernate.AnnotationException：mappedBy引用未知目标实体属性： com.endoorment.models.entity.AccessoryLang.accessory在 com.endoorment.models.entity.Accessory.accessorylang

实体：

@Entity 
@Table(name = "accessories")
public class Accessory implements Serializable {

private static final long serialVersionUID = 1L;

@Id
private Integer id;

@OneToMany(mappedBy = "accessory", cascade = CascadeType.ALL)
private Set<AccessoryLang> accessorylang = new HashSet<AccessoryLang>();

@Entity 
@Table(name = "accessories_langs")
public class AccessoryLang implements Serializable {

private static final long serialVersionUID = 1L;

@EmbeddedId
private AccessoryLangId accessorylangid;

@ManyToOne(fetch = FetchType.LAZY)
@MapsId("accessoryId")
@JoinColumn(name = "accessories_id", nullable = false)
@OnDelete(action = OnDeleteAction.CASCADE)
@JsonIgnore
private Accessory accessory;

@ManyToOne(fetch = FetchType.LAZY)
@MapsId("langId")
@JoinColumn(name = "langs_id", nullable = false)
@OnDelete(action = OnDeleteAction.CASCADE)
@JsonIgnore
private Lang lang;

@Column(nullable = false, length = 45)
@NotEmpty   
private String name;

Answer 1

问题是您有多对多关系，这种情况在您的案例中被映射为多对一和一对多。

您在配件和Lang之间有多对多的关系。 JPA使您可以更好地直接映射它。

请检查本文或搜索“ JPA多对多映射” https://vladmihalcea.com/the-best-way-to-use-the-manytomany-annotation-with-jpa-and-hibernate/

编译：创建名称为“ entityManagerFactory”的bean时出错

1 个答案: