How do I save cookies with Qt?

Question

I am trying to save cookies that are produced by my app to disk location such as C:\\Users\\Username\\AppData\\Local\\MyCompany\\MyApp. I have implemented a web

Answer 1

@Musa's answer is good but it only saves one cookie. I recommend using the Qt folk's implementation from the old qmlviewer located here: http://code.qt.io/cgit/qt/qt.git/tree/tools/qml/qmlruntime.cpp?h=4.7#n438

Here's the code:

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

    virtual QList cookiesForUrl(const QUrl &url) const
    {
        QMutexLocker lock(&mutex);
        return QNetworkCookieJar::cookiesForUrl(url);
    }

    virtual bool setCookiesFromUrl(const QList &cookieList, const QUrl &url)
    {
        QMutexLocker lock(&mutex);
        return QNetworkCookieJar::setCookiesFromUrl(cookieList, url);
    }

private:
    void save()
    {
        QMutexLocker lock(&mutex);
        QList 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()
    {
        QMutexLocker lock(&mutex);
        QSettings settings;
        QByteArray data = settings.value("Cookies").toByteArray();
        setAllCookies(QNetworkCookie::parseCookies(data));
    }

    mutable QMutex mutex;
};