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。
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