SSH級聯操作報錯:org.hibernate.exception.ConstraintViolationException: Could not execute
SSH整合過程中,刪除具有外來鍵的記錄時報錯:
spring4+hibernate4
org.hibernate.exception.ConstraintViolationException: Could not execute
因為有外來鍵約束,所以報錯。
兩個表的關係為基於外來鍵的雙向1-1關聯
A表主鍵 為 B表的外來鍵
//設定級聯屬性CascadeType為刪除,當刪除A表記錄時,自動刪除B表中具有A外來鍵的記錄 @OneToOne(targetEntity=B.class, mappedBy="B", cascade=CascadeType.REMOVE) private B b; //省略 setter、getter方法
B表對應實體
//設定級聯屬性CascadeType為持久化和重新整理,當刪除B表記錄時,不會刪除A表中對應的記錄,但是更新B表會重新整理A表對應記錄
@OneToOne(targetEntity=A.class,cascade={CascadeType.PERSIST,CascadeType.REFRESH})
//對映a_id外來鍵列,參照a表中的a_id列
@JoinColumn(name="a_id", referencedColumnName="a_id", unique=true)
private A a;
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