AnnotationException引用的属性不是（One | Many）ToOne

AnnotationException引用的属性不是（One | Many）ToOne

您错误地设置了映射。Hibernate抱怨称没有

departmentId

可用的字段来建立一对一或多个关系，这是正确的。

您想要这样映射您的值。

Java部门

@Entity@Table(name="department", catalog="student")public class Department {    @Id    @GeneratedValue(strategy=GenerationType.AUTO)    private Integer departmentId;    @oneToOne    @JoinColumn(name = "id")    private DepartmentHead departmenthead;}

DepartmentHead.java

@Entity@Table(name="departmenthead", catalog = "student")public class DepartmentHead {    @Id    @GeneratedValue(strategy=GenerationType.AUTO)    private int id;    @oneToOne(mappedBy = "departmenthead")    private Department department;  }

你点

Department

在外地

DepartmentHead

的

DepartmentHead

内场

Department

。Hibernate会选择要使用的ID，而无需在实际链接中指定该ID。