想在mapper的一個(gè)更新節(jié)點(diǎn)進(jìn)行多條update語句的操作:

<update 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(rèn)不支持的，需要在數(shù)據(jù)庫配置中配置相關(guān)參數(shù)：

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

補(bǔ)充：mybatis批量更新update-設(shè)置多個(gè)字段值

mybatis由于簡單易用性得到大家的認(rèn)可和使用

但是在批量更新操作中，網(wǎng)上介紹的貌似不全，正好今天做個(gè)記錄，大家一起進(jìn)步

在實(shí)際項(xiàng)目開發(fā)過程中，常有這樣的需求：根據(jù)ids更新表的某一個(gè)字段值，這時(shí)的sql語句是：

public interface IStaffDao { void batchUpdate(@Param('list') List<Long> list);}

<select 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(jù)ids更新表的多個(gè)值，并且每個(gè)id對(duì)應(yīng)的值也不一樣，這時(shí)上述語句已經(jīng)滿足不了需求，需要另一種批量更新sql語句

public interface IStaffDao { void batchUpdate(@Param('list') List<Staff> list);}

<update 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>

由于這種批量更新是一次執(zhí)行多個(gè)update語句，所以mybatis需要額外的配置：

在spring.datasource.url后加上allowMultiQueries=true

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

否則，在執(zhí)行sql語句時(shí)，會(huì)報(bào)下面的錯(cuò)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=’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好吧啦網(wǎng)。如有錯(cuò)誤或未考慮完全的地方，望不吝賜教。