mybatis 實現多條update同時執行

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想在mapper的一個更新節點進行多條update語句的操作:

<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是默認不支持的，需要在數據庫配置中配置相關參數：

propertes 或者yml配置 文件中的jdbc後追加&allowMultiQueries=true

jdbc.jdbcUrl=jdbc:mysql://127.0.0.1:3306/database?useUnicode=true&characterEncoding=utf8&allowMultiQueries=true

補充：mybatis批量更新update-設置多個字段值

mybatis由於簡單易用性得到大傢的認可和使用

但是在批量更新操作中，網上介紹的貌似不全，正好今天做個記錄，大傢一起進步

在實際項目開發過程中，常有這樣的需求：根據ids更新表的某一個字段值，這時的sql語句是：

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>

還有一種情況：根據ids更新表的多個值，並且每個id對應的值也不一樣，這時上述語句已經滿足不瞭需求，需要另一種批量更新sql語句

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>

由於這種批量更新是一次執行多個update語句，所以mybatis需要額外的配置：

在spring.datasource.url後加上allowMultiQueries=true

如：jdbc:mysql://10.10.20.36:3306/test?allowMultiQueries=true

否則，在執行sql語句時，會報下面的錯誤

[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='[email protected]'' 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='[email protected]';<span style="font-family: Helvetica, Tahoma, Arial, sans-serif;">update sta<span style="font-size:10px;">ff SET status = 2,</span> send_email_code='[email protected]' </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='[email protected]'' at line 6

以上為個人經驗，希望能給大傢一個參考，也希望大傢多多支持WalkonNet。如有錯誤或未考慮完全的地方，望不吝賜教。

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