增加返回溯源第二个点的service实现

ZhuDongming

2019-06-12 c078390a7398946e88d9ef7446bb2b5562ce77a2

 src/main/resources/mapper/DeviceMapper.xml

@@ -414,4 +414,8 @@
         </if>
      )
   </select>
	
   <select id="getLimitDataByDevice" resultType="String">
      SELECT limit_val FROM view_device_density WHERE mac = #{mac}
   </select>
</mapper>