相邻你找了很多博文，都没有办法。现在终于找到了正宗。

• 参考

GitHub - thecodemonkey86/qt_mysql_driver: Typical symptom: QMYSQL driver not loaded. Solution: get pre-built Qt SQL driver plug-in required to establish a connection to MySQL / MariaDB using Qt. Download qsqlmysql.dll binaries built from official Qt source code 

• 直接下载编译好的源码及dll文件

https://download.csdn.net/download/quantum7/89760587

• 安装VS Virsual Studio 2022 Community

D:\Program Files\Microsoft Visual Studio\2022\Community

要有VC++/cmake等。

• 安装MySQL

C:\Program Files\MySQL\MySQL Server 8.0

• 安装QT

D:\Qt

要选中三项：

MSVC_2019 64-bit

MinGW 11.2.0 64 bit

Sources

• 编译脚本

注意自己的安装目标。

SET VISUAL_STUDIO_DIR="D:\Program Files\Microsoft Visual Studio"
SET MYSQL_DIR="C:\Program Files\MySQL\MySQL Server 8.0"
SET QT_DIR=D:\Qt

set PATH=%PATH%;%QT_DIR%\Tools\CMake_64\bin;%QT_DIR%\Tools\Tools\Ninja

SET QT_VERSION_DIR=%QT_DIR%\6.7.2
SET SQLDRIVERS_DIR=%QT_VERSION_DIR%\Src\qtbase\src\plugins\sqldrivers
cd %SQLDRIVERS_DIR%

call %VISUAL_STUDIO_DIR%\2022\Community\VC\Auxiliary\Build\vcvars64.bat

SET QT_MSVC_DIR=%QT_VERSION_DIR%\msvc2019_64
call %QT_MSVC_DIR%\bin\qt-cmake.bat ^
    -G "Ninja Multi-Config" .  ^
    -DMySQL_INCLUDE_DIR=%MYSQL_DIR%\include ^
    -DMySQL_LIBRARY=%MYSQL_DIR%\lib\libmysql.lib ^
    -DCMAKE_INSTALL_PREFIX=%QT_VERSION_DIR%\msvc2019_64 ^
    -DCMAKE_CONFIGURATION_TYPES=Release;Debug
    
ninja
ninja install

pause

• 检查文件产生

• 检查目录

应该是自动复制过来了。

D:\Qt\6.7.2\msvc2019_64\plugins\sqldrivers