需求

foreach中要传两个参数，一个是id，一个是list。怎么传呢？

单list的情况

Mapper.java

 /**
     * 批量删除
     * @param teamList
     * @return
     */
    public int batchDeleteBizTeam(List<BizTeam> teamList);

Mapper.xml

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

因为我们只传了一个参数，所以这里的collection="list"会自动对应List teamList

多参数+list用map传参

传参地方：

Map params = new HashMap();
params.put("matchId", matchIdLong);
params.put("oeList", oddsEuropeList)

Mapper.java

  /**
     * 批量删除数据
     * @param params
     * @return
     */
    public int batchDeleteOddsEurope(Map params);

Mapper.xml

  <delete id="batchDeleteOddsEurope">
        delete from biz_odds_europe where match_id=#{matchId} and company_id in
        <foreach item="item" collection="oeList" separator="," open="(" close=")" index="">
            #{item.companyId}
        </foreach>
    </delete>

这里的 collection="#{oeList}"就对应Map中的key为oeList的值了。

参考资料

https://www.cnblogs.com/fnlingnzb-learner/p/10566452.html