public class FileRequest{
    //文件類型
    private Integer fileType;
    //狀態(tài)
    private List<Status> statusList;
} 
public class Status{
    //注冊狀態(tài)
    private Integer registerStatus;
    //會議狀態(tài)
    private Integer meetingStatus
}

<select id="findList" parameterType="FileRequest" resultMap="...">
    select * from tableName where
    1=1
    <if test="fileType != null ">
        and file_type = #{fileType}
    </if>
    <if test="statusList != null ">
        and 
        <foreach collection="statusList" index="index" item="item" open"(" separator="or" close=")">
            <if test="item.registerStatus != null ">
                and register_status= #{item.registerStatus}
            </if>
            <if test="item.meetingStatus != null ">
                and meeting_status= #{item.meetingStatus }
            </if>    
        </foreach>
    </if>
</select>

select * from table where type=?
and code in (?,?,?,?)

List<BaseDictionary> selectByTypeAndCodes(
 @Param("codes") List<Integer> codes,
@Param("type") Integer type);
 Mapper.xml.

<select id="selectByTypeAndCodes"  resultMap="BaseResultMap">
    select
    <include refid="Base_Column_List" />
    from base_dictionary
    where type = #{type}
    AND code in
    <foreach collection="codes" index="index" item="item" open="(" separator="," close=")">
     #{item}
    </foreach>
    AND show_enable=1
    AND obj_status=1
    ORDER BY sort
  </select>