解决方案：QSqlDatabase: an instance of QCoreApplication is required for loading driver plugins

在用QSqlDatabase时遇到报错QSqlDatabase: an instance of QCoreApplication is required for loading driver plugins是因为Qt不知道plugins的所在目录。

解决方法：

在用到数据库之前添加代码QCoreApplication::addLibraryPath("./plugins");

其中的"./plugins"可以替换为实际plugins所在的目录（plugins下级存在sqldrivers目录，该目录下的dll为QSqlDatabase实际需要的library。

时间： 2024-11-06 11:16:45

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