linux的qt下载文件

#include <QCoreApplication>
#include <QNetworkAccessManager>
#include <QNetworkRequest>
#include <QNetworkReply>
#include <QFile>

void downloadFile(const QString &url, const QString &filePath) {
    QNetworkAccessManager manager;
    QNetworkRequest request(url);
    QNetworkReply *reply = manager.get(request);

    QFile file(filePath);
    if (!file.open(QIODevice::WriteOnly)) {
        qWarning("Cannot open file for writing");
        return;
    }

    QObject::connect(reply, &QNetworkReply::finished, [&]() {
        if (reply->error() == QNetworkReply::NoError) {
            file.write(reply->readAll());
            file.close();
            qDebug() << "Download finished";
        } else {
            qWarning() << "Download error:" << reply->errorString();
        }
        reply->deleteLater();
        QCoreApplication::quit();
    });
}

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

    QString url = "http://example.com/file.zip";
    QString filePath = "/path/to/save/file.zip";

    downloadFile(url, filePath);

    return app.exec();
}