#include <QApplication>
#include <QUrl>
#include <QWebEngineView>

class WebEnginePage: public QWebEnginePage{
    Q_OBJECT
public:
    WebEnginePage(QObject *parent = Q_NULLPTR):QWebEnginePage(parent){
        connect(this, &WebEnginePage::featurePermissionRequested, this, &WebEnginePage::onFeaturePermissionRequested);
    }
private Q_SLOTS:
    void onFeaturePermissionRequested(const QUrl &securityOrigin, QWebEnginePage::Feature feature){

        if(feature  == QWebEnginePage::MediaAudioCapture
                || feature == QWebEnginePage::MediaVideoCapture
                || feature == QWebEnginePage::MediaAudioVideoCapture)
            setFeaturePermission(securityOrigin, feature, QWebEnginePage::PermissionGrantedByUser);
        else
            setFeaturePermission(securityOrigin, feature, QWebEnginePage::PermissionDeniedByUser);
    }
};

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QWebEngineView view;
    view.setPage(new WebEnginePage);
    view.setUrl(QUrl("https://baidu.com"));
    view.show();

    return app.exec();
}

 

参考于：使用Qt WebEngine自动授予对Mic和Camera的访问权限 - Thinbug