qt - 使用 Qt QNetworkAccessManager 发送 HTTP header 信息

Question

我有以下代码，我想在调用中添加一些 HTTP header 信息。反正我能做到吗？

void NeoAPI::call(QString apiCall) {
    if (this->ApiCall.contains(apiCall)) {
        QNetworkAccessManager* manager = new QNetworkAccessManager(0);
        connect(manager, SIGNAL(finished(QNetworkReply*)), this, SLOT(netReplyFinished(QNetworkReply*)));
        QUrl url = this->ApiCall[apiCall];
        url.addQueryItem("memberid","76710"); // Set for backdoor debugging
        manager->get(QNetworkRequest(url));
    } else {
        this->requestResultText = QString("Call %1 doesn't exist").arg(apiCall);
    }
}

void NeoAPI::netReplyFinished(QNetworkReply *netReply) {
    if (netReply->error() == QNetworkReply::NoError) {
        this->requestResultText = netReply->readAll();
    } else {
        this->requestResultText = "API Call Failed";
    }
    QMessageBox messageBox;
    messageBox.setText(this->requestResultText);
    messageBox.exec();
    //delete netReply;
}

另外，如果我不在类中使用这些， this 会是什么？在 connect(manager, SIGNAL(finished(QNetworkReply*)), this, SLOT(netReplyFinished(QNetworkReply*)));是？

谢谢!

Answer 1

是的，请参阅 QNetworkRequest 的文档.

你会想要做这样的事情:

QNetworkRequest request(url);
request.setHeader( QNetworkRequest::ContentTypeHeader, "some/type" );
request.setRawHeader("Last-Modified", "Sun, 06 Nov 1994 08:49:37 GMT");
manager->get( header );

Also, if I wasn't using these inside a class, what would the this in the connect(manager, SIGNAL(finished(QNetworkReply*)), this, SLOT(netReplyFinished(QNetworkReply*))); be?

它不会是什么。要将信号连接到插槽，该插槽必须是某个对象的成员函数。 Qt primer on signals and slots解释了这一点。