Application failed to start because it could not find or load the QT platform plugin “windows”

  只需要在.exe所在的目录下创建一个目录platforms添加进去缺失的dll即可如图：

参考链接：https://stackoverflow.com/questions/21268558/application-failed-to-start-because-it-could-not-find-or-load-the-qt-platform-pl