HTML内容:
<html> <head> </head> <body> <test id="test1" value="this is test." ></test> </body> </html>
Qt代码:
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QWebEngineView>
#include <QDebug>
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
this->w = new QWebEngineView(this);
this->w->setUrl(QUrl("file:///D:/TMP/qt/1.html"));
this->w->show();
//
connect(this->w,SIGNAL(loadFinished(bool)),
this,SLOT(on_web_loadFinished(bool)));
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::on_web_loadFinished(bool)
{
this->w->page()->runJavaScript("document.getElementById(\"test1\").getAttribute(\"value\")",[]( const QVariant &v ){
qDebug()<<v<<endl;
});
this->w->page()->runJavaScript("document.evaluate(\".//test\", document.body, null, XPathResult.ANY_TYPE, null).iterateNext().getAttribute(\"value\")",[]( const QVariant &v ){
qDebug()<<v<<endl;
});
}
效果:
QMetaObject::connectSlotsByName: No matching signal for on_web_loadFinished(bool) [6944:5192:0816/112807.262:INFO:media_foundation_video_encode_accelerator_win.cc(370)] Windows versions earlier than 8 are not supported. [6944:5192:0816/112807.262:INFO:media_foundation_video_encode_accelerator_win.cc(370)] Windows versions earlier than 8 are not supported. QVariant(QString, "this is test.") QVariant(QString, "this is test.")