[SLOVED] qt 5.0.2 how to get the source of webpage ?

ThElitEyeS

Hello guys i want to know how i can get source code of webpage with out viewing the page just load the source code from page.
For example i put http://google.com
its give me the source code of http://google.com in a variable .

Solution:
in .pro add network

@#include <QCoreApplication>
#include <QDebug>
#include <QtNetwork>

int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
QNetworkAccessManager manager;
QNetworkRequest request(QUrl("http://google.com"));
QNetworkReply *reply(manager.get(request));
QEventLoop loop;
QObject::connect(reply, SIGNAL(finished()), &loop, SLOT(quit()));
loop.exec();
qDebug(reply->readAll());
return a.exec();
}@

raven-worx

see "QNetworkAccessManager::get()":http://qt-project.org/doc/qt-5.0/qtnetwork/qnetworkaccessmanager.html#get

@
//QPointer<QNetworkReply> m_Reply;
m_Reply = nam->get( QNetworkRequest( QUrl("http://google.com") );
connect( reply, SIGNAL(finished()), this, SLOT(onRequestFinished()) );

....

void onRequestFinished()
{
if( ! m_Reply )
return;

if( m_Reply->error() == QNetworkReply::NoError )
{
    QString sourceCode( m_Reply->readAll() );
    ...
}
m_Reply->deleteLater();

}
@

ThElitEyeS

!http://s21.postimg.org/4w93kt3ev/Screenshot_from_2013_07_01_11_24_11.png(error)!

raven-worx

well ... you're not using QNam::get() as i stated. Also see the docs.
The error message is also pretty obvious - which already provides the solution...

ThElitEyeS

Can you write full example for me please?
because i am really new in qt network

raven-worx

i think i already did ?!!
Just read the complete error message and compare my get() call with yours... if you don't see a difference ... well ...

ThElitEyeS

Where i should put
void onRequestFinished?
@
ui->setupUi(this);
QNetworkAccessManager *manager = new QNetworkAccessManager(this);
QPointer<QNetworkReply> reply;
reply = manager->get(QNetworkRequest(QUrl("http://qt-project.org")));
connect(reply, SIGNAL(finished()), this, SLOT(onRequestFinished()));
void onRequestFinished() {

@
returns:
In constructor 'MainWindow::MainWindow(QWidget*)':
error: a function-definition is not allowed here before '{' token

raven-worx

this is a slot... so it is a member method of your class.
And also the QPointer<QNetworkReply> object should be a member then to identify the reply in this slot.

Hope this clears it up:

In your header file:
@
class MyClass : public ...
{
public:
MyClass();

protected slots:
void onRequestFinished();

protected:
QPointer<QNetworkReply> m_Reply;
}
@

In your source file:
@
MyClass::MyClass()
{
m_Reply = nam->get( QNetworkRequest( QUrl("http://google.com") );
connect( reply, SIGNAL(finished()), this, SLOT(onRequestFinished()) );
}

void MyClass::onRequestFinished()
{
if( ! m_Reply )
return;

if( m_Reply->error() == QNetworkReply::NoError )
{
    QString sourceCode( m_Reply->readAll() );
    ...
}
m_Reply->deleteLater();

}
@

ThElitEyeS

I am completely lost

raven-worx

[quote author="ThElitEyeS" date="1372673232"]I am completely lost[/quote]
sorry..but so am i... if thats all you say.

I'm not able to help you, except you tell me what exactly you don't understand.
The code i've posted is a complete example in usage of QNetworkAccessManager::get(), only your own code needs to be integrated into my code.

ThElitEyeS

Is that right ?
!http://s15.postimg.org/tkdarufvf/Screenshot_from_2013_07_02_23_00_40.png(image)!
*Also how i can check if reply is finished in console application and how i can qDebug the code ?
*if i try
@qDebug << code; it will give me a error@

ThElitEyeS

i think i got it working.
thank you raven for the big help you showed :)
!http://s21.postimg.org/8l395k8av/Screenshot_from_2013_07_03_00_15_57.png(a)!