qfile.write（）只写的大文件的前22mbytes

Question

我有以下代码：

QNetworkAccessManager *nam = new QNetworkAccessManager(this);
QNetworkReply *re = nam->get(QNetworkRequest(QUrl("http://somesite/ai.bin")));
QEventLoop loop;
QObject::connect(reply, SIGNAL(readyRead()), &loop, SLOT(quit()));
int timeInSeconds = 10;
QTimer *idleTimer = new QTimer(this);
connect(idleTimer,SIGNAL(timeout()),&loop,SLOT(quit()));
idleTimer->setInterval(timeInSeconds *1000);
idleTimer->start();
loop.exec();

//save
QFile file("C:/a.jpg");
file.open(QIODevice::WriteOnly);
file.write(re->readAll());

ui->dbgOut->insertHtml("<font color='green'>OK</font><br>");

.

如果遥控器是5 MB，它可以工作，BT如果文件是50或500MB的文件，则程序只能保存前22 MB，而该过程仍在后台下载文件。

我做错了什么？

Answer 1

10秒可能不足以根据您的Internet连接下载全部。不要使用这样的计时器。要立即效果，请删除这些线路：

int timeInSeconds = 10;
QTimer *idleTimer = new QTimer(this);
connect(idleTimer,SIGNAL(timeout()),&loop,SLOT(quit()));
idleTimer->setInterval(timeInSeconds *1000);
idleTimer->start();

.