mybatis中的foreach方法

select  t.service_id,

t.prod_id,

t.prod_name,

t.prod_type,

t.buss_type,

t.pricing_fee,

t.detail

from TB_BUS_PROD_ACTIVITY_INFO t

where 1=1

<if test="prod_id!=null and prod_id!=''">

and t.prod_id in

<foreach item="item" index="index" collection="prod_id"

open="(" separator="," close=")">

#{item}

</foreach>

</if>

</select>