问题：
主表
@Data
@Entity(name = "husband")
@NoArgsConstructor
@EqualsAndHashCode(callSuper = false)
public class Husband extends BaseEntity {
....
@OneToOne(cascade = CascadeType.ALL, mappedBy = "husband", fetch = FetchType.LAZY)
private Wife wife;
}
从表
@Data
@Entity(name = "wife")
@NoArgsConstructor
@EqualsAndHashCode(callSuper = false)
public class Wife extends BaseEntity {
....
@OneToOne
private Husband husband ;
}
上述代码会出现内存溢出的问题，由于hashcode造成的相互调用形成死循环，可以修改任意一个表的@EqualsAndHashCode，如修改wife的可改为@EqualsAndHashCode(exclude = {"husband"}, callSuper = false)即可。