add websocket实时发送设备数据，显示风向等信息

ZhuDongming

2020-06-22 2bc319c2c241d7646cb6805f9364cb7416edfa0a

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package com.moral.mapper; 
 
import com.moral.common.mapper.BaseMapper; 
import com.moral.entity.Town; 
 
public interface TownMapper extends BaseMapper<Town>{ 
     
}