需要在发布的Exe同级 加入D:\DevTools\qt5.9.2\5.9.2\mingw53_32\plugins 下的D:\DevTools\qt5.9.2\5.9.2\mingw53_32\plugins\sqldrivers\qsqlite.dll这个文件,不然会报错
QSqlDatabase: QSQLITE driver not loaded
QSqlDatabase: available drivers:
QSqlDatabase: an instance of QCoreApplication is required for loading driver plugins