BeanCreationException 创建@manytomany 实体关系

Question

我正在创建三个表 Doctor、Patient 和 Specialty。患者可以只有一名全科医生，但一名医生可以是多名患者的全科医生。每个医生都有自己的专业（例如神经外科医生、心脏病专家、泌尿科医生等）由 BeanCreationException 引起的类路径资源，尤其是 mappedBy 引用了一个未知的目标实体属性。由于我是弹簧靴的新手，如果有人可以解释我，我会非常高兴。提前谢谢你

BaseEntity 类：

@MappedSuperclass
public class BaseEntity {

    @Id
    @GeneratedValue(strategy= GenerationType.IDENTITY)
    private long id;
}

医生类：

@Entity
@Table(name="doctor")
public class Doctor extends BaseEntity{

    private String name;

    @ManyToMany(mappedBy ="doctor")
    private Set<Specialty> specialties;

    @OneToMany(mappedBy ="doctor")
    private List<Patient> GpOfPatients;

}

患者类别：

@Entity
@Table(name="patient")
public class Patient extends BaseEntity{

    private String name;
    private String EGN;
    private boolean insurancesPaidInLastSixMonths;

    @ManyToOne
    @JoinColumn(name="gp_id")
    private Doctor doctor;

}

专业课：

@Entity
@Table(name="specialty")
public class Specialty extends BaseEntity{

    private String specialtyName;

    @ManyToMany
    @JoinTable(name="doctors_specialties",joinColumns = @JoinColumn(name="specialty_id"),
    inverseJoinColumns = @JoinColumn(name="doctor_id"))
    private Set<Doctor> doctors;

}

Answer 1

在Doctor类中，您将specialties映射到doctor，但在Specialty中，Doctor集的名称为doctors，因此无法映射。

您应该如下所示更改您的 Doctor 类：

@Entity
@Table(name="doctor")
public class Doctor extends BaseEntity{

    private String name;

    @ManyToMany(mappedBy ="doctors")
    private Set<Specialty> specialties;

    @OneToMany(mappedBy ="doctor")
    private List<Patient> GpOfPatients;

}