邀请电话号为空不为null 返回msg提示

yujian

2019-01-24 c7052daa68c6f9a4141f501dec03d8f64fcd4a8a

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package com.yeshi.fanli.dao.mybatis;
 
 
public interface ScanHistoryMapper {
 
    long countUserScanHistory(Long userId);
    
}