增加websocket单位

kaiyu

2020-12-15 1a406e3e206af1ab7e38042548a085b078b6ca09

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