Mybatis批量更新

mysql数据库采用一下写法即可执行，但是数据库连接必须配置：&allowMultiQueries=true

例如：jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=UTF-8&allowMultiQueries=true

<update id="batchUpdate" parameterType="java.util.List">
  <foreach collection="list" item="item" index="index" open="" close="" separator=";">
    update test
    <set>test=${item.num}+1</set>
    where id = ${item.id}
  </foreach>
</update>