mybatis 实现多条update同时执行
程序员文章站
2022-07-09 17:43:12
想在mapper的一个更新节点进行多条update语句的操作:...
想在mapper的一个更新节点进行多条update语句的操作:
<update id="cleanuserbyphone" parametertype="java.lang.string"> update user set valid_status = 1 where mobile_phone = #{mobilephone}; update user_account set valid_status = 1 where mobile_phone = #{mobilephone} ; </update>
mybatis是默认不支持的,需要在数据库配置中配置相关参数:
propertes 或者yml配置 文件中的jdbc后追加&allowmultiqueries=true
jdbc.jdbcurl=jdbc:mysql://127.0.0.1:3306/database?useunicode=true&characterencoding=utf8&allowmultiqueries=true
补充:mybatis批量更新update-设置多个字段值
mybatis由于简单易用性得到大家的认可和使用
但是在批量更新操作中,网上介绍的貌似不全,正好今天做个记录,大家一起进步
在实际项目开发过程中,常有这样的需求:根据ids更新表的某一个字段值,这时的sql语句是:
public interface istaffdao { void batchupdate(@param("list") list<long> list); }
<select id="getstaffsbyids" resultmap="staff_mapper"> update staff set status = 0 where id in <foreach collection="list" item="item" index="index" open="(" separator="," close=")" > #{item} </foreach> order by id </select>
还有一种情况:根据ids更新表的多个值,并且每个id对应的值也不一样,这时上述语句已经满足不了需求,需要另一种批量更新sql语句
public interface istaffdao { void batchupdate(@param("list") list<staff> list); }
<update id="batchupdate" parametertype="java.util.list" > <foreach collection="list" item="item" index="index" separator=";"> update staff set count = #{item.count} , code = #{item.code} , invalid_time = #{item.time} where id = #{item.id} </foreach> </update>
由于这种批量更新是一次执行多个update语句,所以mybatis需要额外的配置:
在spring.datasource.url
后加上allowmultiqueries=true
如:jdbc:mysql://10.10.20.36:3306/test?allowmultiqueries=true
否则,在执行sql语句时,会报下面的错误
[org.apache.ibatis.session.defaults.defaultsqlsession@76a2f910] org.springframework.jdbc.badsqlgrammarexception: ### error updating database. cause: com.mysql.jdbc.exceptions.jdbc4.mysqlsyntaxerrorexception: you have an error in your sql syntax; check the manual that corresponds to your mysql server version for the right syntax to use near 'update b_email_msg_remind set send_status = 1, send_email_code='abc@abc.abc'' at line 6 ### the error may involve com.hhsoft.sectionservice.model.persistence.emailmapper.updateemailtasks-inline ### the error occurred while setting parameters ### cause: com.mysql.jdbc.exceptions.jdbc4.mysqlsyntaxerrorexception: you have an error in your sql syntax; check the manual that corresponds to your mysql server version for the right syntax to use near 'update staff set status = 1, send_email_code='abc@abc.abc';<span style="font-family: helvetica, tahoma, arial, sans-serif;">update sta<span style="font-size:10px;">ff set status = 2,</span> send_email_code='test@qq.com' </span>' at line 6 ; bad sql grammar []; nested exception is com.mysql.jdbc.exceptions.jdbc4.mysqlsyntaxerrorexception: you have an error in your sql syntax; check the manual that corresponds to your mysql server version for the right syntax to use near 'update b_email_msg_remind set send_status = 1, send_email_code='abc@abc.abc'' at line 6
以上为个人经验,希望能给大家一个参考,也希望大家多多支持。如有错误或未考虑完全的地方,望不吝赐教。