mybatis foreach 的使用

<insert id="batchInsert">  insert into article(title,content) values  <foreach collection="list" separator="," item="item">  (#{item.title},#{item.content})  </foreach></insert>

int batchInsert(List<Article> articles);

<select id="findInIds" resultType="com.aiyeni.entity.Article">    select * from article    <where>        id in        <foreach collection="list" item="item" separator="," open="(" close=")">            #{item}        </foreach>    </where></select>

List<Article> findInIds(List<Long> list);