如何告诉QWebPage不加载特定类型的资源？

Question

如何判断QWebPage不加载特定类型的资源,如js,css或png？

Answer 1

解决方案是扩展QNetworkAccessManager类并覆盖它的虚方法QNetworkAccessManager::createRequest在我们的实现中,我们检查所请求的URL的路径,如果它是我们不想下载的那个,我们创建并移交一个空请求而不是真实的请求.以下是一个完整的工作示例.

#include <QApplication>
#include <QUrl>

#include <QtWebKit/QWebPage>
#include <QtWebKit/QWebFrame>

#include <QtNetwork/QNetworkAccessManager>
#include <QtNetwork/QNetworkRequest>
#include <QtNetwork/QNetworkReply>
#include <QDebug>


class NAM : public QNetworkAccessManager {

    Q_OBJECT

protected:

    virtual QNetworkReply * createRequest(Operation op,
                                          const QNetworkRequest & req,
                                          QIODevice * outgoingData = 0) {

        if (req.url().path().endsWith("css")) {
            qDebug() << "skipping " << req.url();
            return QNetworkAccessManager::createRequest(QNetworkAccessManager::GetOperation,
                                                        QNetworkRequest(QUrl()));
        } else {
            return QNetworkAccessManager::createRequest(op, req, outgoingData);
        }
    }
};


int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QWebPage page;
    NAM nam;

    page.setNetworkAccessManager(&nam);
    page.mainFrame()->load(QUrl("http://google.com"));

    app.exec();
}

#include "main.moc"