Merge branch 'yw.1.2.fixbug' of http://192.168.1.226:10010/r/development/c+...

xuxiuxi

2019-03-14 2b1a3988c9fd35c39e3e43d0382d65a13c45efee

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#include "BaseDao.h"
mysqlpp::Connection* BaseDao::conn = nullptr;
QMutex BaseDao::m_mutexVisit;