QT使用5G信号把数据发出去代码

在使用Qt框架发送5G数据通常涉及到网络编程，尤其是QNetworkAccessManager和相关的信号槽机制。以下是一个简单的示例，展示如何使用Qt的5G连接功能通过WebSocket发送数据：

#include <QObject>
#include <QNetworkAccessManager>
#include <QWebSocket>
#include <QByteArray>

class NetworkManager : public QObject {
    Q_OBJECT

public:
    explicit NetworkManager(QObject *parent = nullptr) : QObject(parent) {
        manager = new QNetworkAccessManager(this);
        connect(manager, &QNetworkAccessManager::finished, this, &NetworkManager::handleFinished);
    }

private slots:
    void handleFinished(QNetworkReply *reply) {
        if (reply->error() == QNetworkReply::NoError && reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() >= 200 && reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() < 300) {
            QByteArray data = reply->readAll();
            // 这里可以将data转换为你想要发送的5G数据格式，然后通过WebSocket发送
            QWebSocket webSocket("ws://your_5g_gateway_url");
            webSocket.open(QWebSocket::TcpServer);
            if (webSocket.openState() == QWebSocket::OpenState) {
                webSocket.sendTextMessage(data.toUtf8());
            }
        } else {
            qWarning() << "Failed to send data: " << reply->errorString();
        }
        reply->deleteLater();
    }

signals:
    void sendDataCompleted();

public slots:
    void sendData(const QByteArray& data) {
        QUrl url(QStringLiteral("http://your_5g_api_endpoint/send"));
        QNetworkRequest request(url);
        request.setRawHeader(QStringLiteral("Content-Type"), QStringLiteral("application/json"));
        QJsonDocument doc;
        doc.setObject(QJsonObject::fromArray({{"data", data}}));
        QByteArray json = doc.toJson(QJsonDocument::Compact);
        manager->post(request, json);
        emit sendDataCompleted();
    }
};

int main(int argc, char *argv[]) {
    QApplication app(argc, argv);

    NetworkManager networkManager;
    QByteArray dataToSend = ...; // 你需要准备的数据
    networkManager.sendData(dataToSend);

    return app.exec();
}