qt-opensource-linux-x64-5.14.1.run安裝的qt可能只支持有限的幾種數據庫，缺少mysql的支持，按照下文操作添加mysql數據的支持。

操作

sudo apt-get install libmysqlclient-dev -y

export PATH=/opt/Qt5.14.1/5.14.1/gcc_64/bin/:$PATH

tar xf qt-everywhere-src-5.14.1.tar.xz

cd qt-everywhere-src-5.14.1/qtbase/src/plugins/sqldrivers

qmake

Running configuration tests...

Done running configuration tests.

Configure summary:

Qt Sql Drivers:

DB2 (IBM) .............................. no

InterBase .............................. no

MySql .................................. yes

OCI (Oracle) ........................... no

ODBC ................................... no

PostgreSQL ............................. no

SQLite2 ................................ no

SQLite ................................. yes

Using system provided SQLite ......... no

TDS (Sybase) ........................... no

Qt is now configured forbuilding. Just run "make".

Once everything is built, you must run "make install".

Qt will be installed into "/opt/Qt5.14.1/5.14.1/gcc_64".

Prior to reconfiguration, make sure you remove any leftovers from

the previous build.

make

sudo cp ./plugins/sqldrivers/libqsqlmysql.so /opt/Qt5.14.1/5.14.1/gcc_64/plugins/sqldrivers/

注意替換/opt/Qt5.14.1/5.14.1/的目錄，我這里啟用了mysql,其他的數據可以安裝對應的啟動也可以編輯，然后復制到對應的目錄下。

重新運行程序。

I0225 20:50:21.861747?? 885 testSQL.cpp:40] open sucess

總結

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