List<Long> noticeIdList = new ArrayList<>();
noticeIdList.add(1L);
noticeIdList.add(2L);
noticeIdList.add(3L);
List<TbNotice> noticeList = selectNoticeListByList(noticeIdList);
List<TbNotice> noticeList = selectNoticeListByArray(noticeIdList.toArray(new Long[noticeIdList.size()]));

 

    /**
     * 
     *
     * @param ids ID数组
     * @return 对象集合
     */
    public List<Notice> selectNoticeListByArray(Long[] ids);


    /**
     * 
     *
     * @param noticeIdList ID集合
     * @return 对象集合
     */
    public List<Notice> selectNoticeListByList(List<Long> noticeIdList);

数组参数: collection 用 array接收参数

    <select id="selectNoticeListByArray" parameterType="Long" resultMap="NoticeResult">
        select * from notice where id in
        <foreach item="id" collection="array" open="(" separator="," close=")">
            #{id}
        </foreach>
    </select>

集合参数: collection 用 list接收参数

    <select id="selectNoticeListByList" parameterType="Long" resultMap="NoticeResult">
        select * from notice where id in
        <foreach item="id" collection="list" open="(" separator="," close=")">
            #{id}
        </foreach>
    </select>

多参数的使用

    /**
     * @param ids ID数组
     * @param keyword 关键字
     * @return 对象集合
     */
    public List<Notice> selectNoticeListByArray(@Param("ids") Long[] ids,@Param("keyword") String keyword);

数组参数: collection 用 @Param值 ids 接收参数

    <select id="selectNoticeListByArray"  resultMap="NoticeResult">
        select * from notice where id in
        <foreach item="id" collection="ids" open="(" separator="," close=")">
            #{id}
        </foreach>
        and creater_key = #{keyword}
    </select>