QNetworkAccessManager不发出信号

QNetworkAccessManager does not emit signal

本文关键字：信号 QNetworkAccessManager 更新时间：2023-10-16

所以我有这个代码：

QUrl url("http://...");
QNetworkRequest request(url);
QNetworkReply *reply = m_networkManager->get(request);
connect(reply, SIGNAL(finished()), SLOT(onRequestCompleted()));
connect(reply,SIGNAL(error(QNetworkReply::NetworkError)),SLOT(onError(QNetworkReply::NetworkError)));

我无法获得另一功能的信号

void IpResolver::onRequestCompleted()
{
QString webContent;
QNetworkReply *reply = qobject_cast<QNetworkReply*>(sender());
if (reply)
{
    if (reply->error() == QNetworkReply::NoError)
    {
        QString webContent = reply->readAll();
    }
}
}

我想不出解决办法，请帮忙。

我不知道你到底想要什么，但是：

为什么使用回复指针而不是某种onRequestCompleted(QNetworkReply *reply)

如果你这样做：

QUrl url("http://...");
QNetworkRequest request(url);
connect(m_networkManager, &QNetworkAccessManager::finished, this, &IpResolver::onRequestCompleted);
m_networkManager->get(request);

您的插槽将是，例如：

void IpResolver::onRequestCompleted(QNetworkReply *reply)
{
    QString webContent;
    if (reply->error() == QNetworkReply::NoError)
        webContent = reply->readAll();
}