How to set cookie with QWebview in QML?

Question

I am using QWebView in QML. I want to show web site that needs authentication. Data should be passed via standard cookie. Any help? Additional link or example would be great.

Thank in advance.

Answer 1

By default, the default QNetworkAccessManager used by webkit have its own (non-persistent) cookie jar, aka QNetworkCookieJar.

This will handle the sending and receiving of cookies during the life span of a QWebPage.

To keep the same cookie jar across multiple pages, you have to:

1. Create an instance of a QNetworkCookieJar, possibly subclassing it to make it persistent
2. attach this cookie jar to each newly created QWebPage

Example of a persistent cookie jar saved to settings:

class PersistentCookieJar : public QNetworkCookieJar {
public:
    PersistentCookieJar(QObject *parent) : QNetworkCookieJar(parent) { load(); }
    ~PersistentCookieJar() { save(); }

public:
    void save()
    {
        QList<QNetworkCookie> list = allCookies();
        QByteArray data;
        foreach (QNetworkCookie cookie, list) {
            if (!cookie.isSessionCookie()) {
                data.append(cookie.toRawForm());
                data.append("\n");
            }
        }
        QSettings settings;
        settings.setValue("Cookies",data);
    }

    void load()
    {
        QSettings settings;
        QByteArray data = settings.value("Cookies").toByteArray();
        setAllCookies(QNetworkCookie::parseCookies(data));
    }
};

To use:

QWebView* vw = new QWebView(this);
PersistenCookieJar* jar = new PersistenCookieJar(this);
vw->page()->networkAccessManager()->setCookieJar(jar);  // the jar is reparented to the page
jar->setParent(this);  // reparent to main widget to avoid destruction together with the page