mybatis 实现多条update同时执行
作者：yjl33
这篇文章主要介绍了mybatis 实现多条update同时执行，具有很好的参考价值，希望对大家有所帮助。一起跟随小编过来看看吧
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脚本之家。如有错误或未考虑完全的地方，望不吝赐教。