一.配置

• 批量操作jdbc url需添加allowMultiQueries=true属性：
  实例：spring.datasource.url=jdbc:mysql:[url]?useUnicode=true&characterEncoding=UTF8&autoReconnect=true&allowMultiQueries=true

二.批量增

mybatis

<insert id="" parameterType="java.util.List">
   insert into hello_words (id, value)
    values 
    <foreach collection="list" item="item" index="index" separator="," open="("  close=")" >
      #{item.wordNo},#{item.value}
    </foreach>
</insert>

mysql执行语句

 insert into hello_words (id, value)  insert into hello_words (id, value)  values  (1,2),{2,3)

三.批量更新

mybatis单属性更新

<update id=""  parameterType="java.util.List">
    UPDATE  hello_words
    SET value=#{value}
    WHERE id IN
    <foreach collection="list" index="index" item="item"  separator="," open="(" close=")">
        #{item.id}
    </foreach>
</update>

mysql单属性更新

UPDATE  hello_words SET value=#{value} WHERE id IN(1,2)

mybatis多属性更新

<update id="" parameterType="java.util.List">
    update hello_words
    <trim prefix="set" suffixOverrides=",">
            value1 =
            <foreach collection="list" index="index" item="item"  open="case ID" close="end" separator="" >
                when #{item.id} then #{item.value}
            </foreach>
            ,
            value2=
            <foreach collection="list" index="index" item="item"  open="case ID" close="end" separator="" >
                when #{item.id} then #{item.value2}
            </foreach>
    
    </trim>
    WHERE id IN
    <foreach collection="list" index="index" item="item"  separator="," open="(" close=")">
        #{item.id}
    </foreach>
</update>

mysql多属性更新

update hello_words
SET value=
case when id =1 then 2 end
case when id =2 then 2 end
where id in(1,2)

四.批量删除

<delete id="">
    delete from hello_words
    where id in
    <foreach item="item" collection="list" open="(" separator="," close=")">
        #{item.id}
    </foreach>
</delete>