c++ - C++ QT删除QNetworkCookie

我正在尝试删除Cookie，但出现错误：

error C2440: 'initializing' : cannot convert from 'const QNetworkCookie' to 'QNetworkCookie &'

我很困惑为什么编译器会抱怨const QNetworkCookie（我假设它正在抱怨我的foreach()）。

void PersistentCookieJar::deleteCookie(const QString cookieName) {
    QList<QNetworkCookie> cookies = allCookies();
    foreach(QNetworkCookie &cookie, allCookies()) {
        if (cookie.name() == cookieName) {
            cookie.setValue(""); // delete the cookie
            break;
        }
    }
}

最佳答案

void PersistentCookieJar::deleteCookie(const QString cookieName) {
    QList<QNetworkCookie> cookies = allCookies();
    foreach(QNetworkCookie &cookie, cookies) {
        if (cookie.name() == cookieName) {
            cookie.setValue(""); // delete the cookie
            break;
        }
    }
    setAllCookies(cookies);
}