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我正在尋找關於我的小程序的幫助。我想使用QNetwork類從網站下載安裝程序(.exe)。我已經搜索並閱讀了很多關於它的文章,但它不起作用。從網站下載文件
download.cpp:
Download::Download(QObject *parent) :
QObject(parent)
{
}
void Download::initialiseDownload()
{
QNetworkAccessManager manager;
QNetworkRequest request;
request.setUrl(QUrl("http://www.mylink.com/setup.exe"));
reply = manager.get(request);
QObject::connect(reply, SIGNAL(error(QNetworkReply::NetworkError)), this, SLOT(downloadError(QNetworkReply::NetworkError)));
QObject::connect(reply, SIGNAL(downloadProgress(qint64, qint64)), this, SLOT(updateProgress(qint64, qint64)));
QObject::connect(reply, SIGNAL(finished()), this, SLOT(downloadFinished()));
}
void Download::downloadError(QNetworkReply::NetworkError err)
{
qDebug() << reply->errorString();
reply->deleteLater();
}
void Download::updateProgress(qint64 read, qint64 total)
{
qDebug() << "Progress...";
qint64 percent = (read/total) * 100;
qDebug() << percent;
}
void Download::downloadFinished()
{
qDebug() << "Finished !";
QByteArray b = reply->readAll();
QFile file("./sdk/setup.exe");
file.open(QIODevice::WriteOnly);
QDataStream out(&file);
out << b;
reply->deleteLater();
}
download.h:
#include "launcher.h"
#include <QObject>
#include <QtNetwork>
class Download : public QObject, public Launcher
{
Q_OBJECT
public:
explicit Download(QObject *parent = 0);
void Download::initialiseDownload();
private slots:
void downloadError(QNetworkReply::NetworkError err);
void updateProgress(qint64 read, qint64 total);
void downloadFinished();
private:
QNetworkReply *reply;
};
我已經添加了OpenSSL中的DLL和它的工作。我還在「.pro」文件中添加了「網絡」。但是,當我運行我的程序時,我點擊另一個類的按鈕,initialiseDownload()正在工作,但信號似乎是不活動的。
在此先感謝!