使用Qt QNetworkAccessManager发送HTTP标头信息

Question

我有以下代码,我想添加一些HTTP标头信息以及调用.无论如何我能做到吗？

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,如果我不使用这些类里面,会是什么this的connect(manager, SIGNAL(finished(QNetworkReply*)), this, SLOT(netReplyFinished(QNetworkReply*)));呢？

谢谢!

Answer 1

是的,请参阅QNetworkRequest的文档.

你想要做的事情如下:

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

另外,如果我没有在一个类中使用它们,那么connect(manager,SIGNAL(finished(QNetworkReply*)),这个,SLOT(netReplyFinished(QNetworkReply*)))会是什么呢？是？

它不会是任何东西.要将信号连接到插槽,该插槽必须是某个对象的成员函数.信号和插槽的Qt入门解释了这一点.