How to use QNetworkAccessManager to crawl a lot of webpage in the same time?

[momo]

Hello everyone,

I want to use QNetworkAccessManager to crawl some webpage in one website, the url of webpage is regular so I wrote some codes like this:

QNetworkAccessManager* pManager = new QNetworkAccessManager(this);
	connect(pManager, SIGNAL(finished(QNetworkReply*)), this, SLOT(read(QNetworkReply*)));
 
	int iPageCount = 2000;
	for (int i = 0; i < iPageCount; ++i)
	{
		QNetworkRequest request;
		request.setUrl(QString("http://www.abc.com/%1.html").arg(QString::number(i)));
 
		pManager->get(request);
	}

QNetworkAccessManager* pManager = new QNetworkAccessManager(this);
	connect(pManager, SIGNAL(finished(QNetworkReply*)), this, SLOT(read(QNetworkReply*)));
	
	int iPageCount = 2000;
	for (int i = 0; i < iPageCount; ++i)
	{
		QNetworkRequest request;
		request.setUrl(QString("http://www.abc.com/%1.html").arg(QString::number(i)));
		
		pManager->get(request);
	}

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But the codes did not worked correctly, I can not get any data in read(QNetworkReply*).
Is there any mistake in my code? Or is there have another solution for my demand?