增加返回溯源第二个点的service接口

ZhuDongming

2019-06-12 8c5ce9159aebbd2092248e4074244c7a18cab4c5

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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>{ 
     
}