QWebpage tohtml() get the wrong html

tkks

poor in english ,i want to get web html ,save to disk . use QWebEngine->page()->toHtml();
but i get " <html> <body></body> </html> ", the web use ajax to load data .
how can i get the data html.
i used 2 ways to get html.

when set url , call QWebEngine->page()->toHtml() function . but get" <html> <body></body> </html>"
when loadfinished , call QWebEngine->page()->toHtml() function , get nothing .
test web is https://dangdang.tmall.com/search.htm?search=y&orderType=newOn_desc&pageNo=88

version 5.7

raven-worx

@tkks
please post some code.
QWebPage::toHtml() should return the correct html as you are expecting it.

ThatDud3

Well if nothing else works you can always pull it through javascript

document.getElementsByTagName('html')[0].innerHTML

Get the html of the javascript-rendered page (after interacting with it)
and if there are any IFRAMEs or any other part of page missing you should pass argument to application "--disable-web-security"
QtWebEngine: “Not allowed to load local resource” for iframe, how to disable web security?

tkks

@raven-worx

file :ca.h

#ifndef CA_H
#define CA_H

#include <QObject>
#include <string>
#include <QtWebEngineWidgets/qwebengineview.h>
#include <QtWebEngineWidgets/qwebenginesettings.h>

class CA:public QObject
{
    Q_OBJECT
public:
    CA();
    void spider(const std::string& str);
public slots:
    void finish(bool is_ok);

private:
    QWebEngineView *view ;
};

#endif // CA_H

file:ca.cpp

#include "ca.h"
#include <QString>

CA::CA()
{
    view = nullptr;
}

void CA::spider(const std::string& str)
{
    qDebug("spider");
    if(view == nullptr)
    {
        qDebug("new QWebEngineView");
        view = new QWebEngineView;
        view->setUrl(QUrl(QString::fromStdString(str)));
        QObject::connect( view , &QWebEngineView::loadFinished , this , &CA::finish  );
        QWebEngineSettings *setting = view->page()->settings();
        setting->setAttribute( QWebEngineSettings::AutoLoadImages , false );
        view->resize(1024, 750);
    }
    else
    {
        view->setUrl(QUrl(QString(str.c_str())));
    }
    //view->show();
}

void CA::finish(bool is_ok)
{
    if(is_ok)
    {
        qDebug("load successed!");
        view->page()->toHtml(
        [](const QString &str )mutable -> void
        {
            QString html = str ;
            qDebug()<<html;
        }
        );
    }
    else
    {
        qDebug("load error!");
    }
}

file main.cpp

#include <QCoreApplication>
#include <QApplication>
#include "ca.h"
using namespace std;





int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    CA  ca;
    ca.spider("https://dangdang.tmall.com/search.htm?search=y&orderType=newOn_desc&pageNo=88");

    return a.exec();
}

when the slots funcion nothing happened just cout

load successed!