官方下载地址https://www.qt.io/development/download-qt-installer-oss国内镜像腾讯云镜像源.\qt-online-installer-windows-x64-online.exe --mirror https://mirrors.cloud.tencent.com/qt注意.\qt-online-installer-windows-x64-online.exe替换为自己的文件名称具体方法回车键进入终端