1、在连接字符串中加入 allowMultiQueries=true 参数

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如

<property name="driverUrl" value="jdbc:mysql://192.168.1.102:3306/dbname?useUnicode=true&amp;characterEncoding=UTF-8&amp;autoReconnect=true&amp;failOverReadOnly=false&amp;allowMultiQueries=true"/>

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2、xml中加入分号

update device set space=? #{space};

update users set backuptime=NOW() where userid = #{userid};