Merge branch 'yw.1.2.fixbug' of ssh://192.168.1.226:29418/development/c++ i...

chenshijun

2019-03-20 7c3bd5be42ffaa62747aff75afffb62254357f21

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