List<Map<String, Object>> getList(@Param("userId")String userId,@Param("list")List<String> ids);

<select id="getList" resultType="map">
    SELECT * FROM tb_test WHERE userId = #{userId} and  id in
    <foreach close=")" collection="list" item="listItem" open="(" separator=",">
        #{listItem}
    </foreach>
</select>