Hibernate: select good0_.id as id1_6_, good0_.commentId as commenti2_6_, good0_.userId as userid3_6_ from tbl_good good0_ where good0_.userId=? and good0_.commentId=?

解決方法

在刪除方法前加注解@Transactional即可

再次執(zhí)行時(shí)會(huì)正常執(zhí)行

Hibernate: select good0_.id as id1_6_, good0_.commentId as commenti2_6_, good0_.userId as userid3_6_ from tbl_good good0_ where good0_.userId=? and good0_.commentId=?
Hibernate: delete from tbl_good where id=?
Hibernate: select comment0_.id as id1_3_0_, comment0_.articleId as articlei2_3_0_, comment0_.ccomment as ccomment3_3_0_, comment0_.goodNum as goodnum4_3_0_, comment0_.userId as userid5_3_0_, comment0_.userType as usertype6_3_0_ from tbl_comment comment0_ where comment0_.id=?

JPA中使用delete踩坑記錄

今天寫新模塊的一個(gè)刪除功能，測試的時(shí)候出了幾個(gè)問題。

原代碼：

@Query("delete from PrivateMessageEntity ae " +
       "where ((ae.sendId=?1 and ae.receiveId=?2)or(ae.sendId=?2 and ae.receiveId=?1)) " +
       "and ae.deleted=?3")
    int deleteDetailPrivateLetterList(Long sendId, Long receiveId, Boolean deleted);

測試時(shí)報(bào)錯(cuò)，大概是sql有問題

于是乎我把該hql語句轉(zhuǎn)成sql語句去navicat上執(zhí)行了一遍，報(bào)錯(cuò)顯示sql語法有誤。

根據(jù)指示的錯(cuò)誤起始位置，懷疑是別名問題，查了一下，sql的delete在使用別名時(shí) 在 delete 與from 之間的表別名不可省略

正確sql如下：

delete a.* from tb_table a   
where a.id=1;

修改之后的代碼如下：

    @Query(value = "delete ae.* from tb_zone_private_message ae " +
            "where ((ae.sendId=?1 and ae.receiveId=?2)or(ae.sendId=?2 and ae.receiveId=?1)) " +
            "and ae.deleted=?3",nativeQuery = true)
    int deleteDetailPrivateLetterList(Long sendId, Long receiveId, Boolean deleted);

這下看起來沒問題了，測試了一遍又報(bào)錯(cuò)了。

復(fù)制報(bào)錯(cuò)信息又去查了一下，發(fā)現(xiàn)對于執(zhí)行update和delete語句需要添加@Modifying注解。

修改后代碼如下：

    @Modifying
    @Query(value = "delete ae.* from tb_zone_private_message ae " +
            "where ((ae.sendId=?1 and ae.receiveId=?2)or(ae.sendId=?2 and ae.receiveId=?1)) " +
            "and ae.deleted=?3",nativeQuery = true)
    @Transactional
    int deleteDetailPrivateLetterList(Long sendId, Long receiveId, Boolean deleted);

測試一遍，刪除成功。

以上為個(gè)人經(jīng)驗(yàn)，希望能給大家一個(gè)參考，也希望大家多多支持腳本之家。

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