使用QWebkit检索具有特定类的div [英] Using QWebkit to retrieve divs with a specific class
问题描述
我在下面发布了问题，试图使用QDomDocument类.建议我改用QWebkit，但我对如何使用QWebkit进行操作感到非常困惑.我以前从未使用过它，所以我不太确定.有人可以提供任何建议吗?谢谢！ 作为记录，该函数使用QByteArray，将其转换为文本后即为标准HTML文件.
I posted the question below, trying to use the QDomDocument classes. I was advised to use the QWebkit instead, but I'm very confused how to do what I need to do with QWebkit. I've never used it before so I'm rather unsure with it. Could anyone please offer any advice? Thanks! For the record, the function is using a QByteArray that when translated to text is a standard HTML file.
原始问题:
在HTML文件中，我有几个具有不同类的div，如下所示:
I have several divs in an HTML file with different classes, like this:
<div class='A'>...</div>
<div class='B'>...</div>
<div class='C'>...</div>
我有一个Qt(4.7)程序，在该程序中我需要能够基于该类从中获得一定的div.我需要在此程序中使用QDomDocument.我从文档中知道该类具有功能elementById()，但是我不能让它与类一起使用，而只能使用id.这不是由HTML文件制成的，也不是任何东西，因此我无法控制它是类还是id.有没有办法做到这一点，我很想念?谢谢！
I have a Qt (4.7) program where I need to be able to get a certain div out of this based on the class. I need to use QDomDocument in this program. I know from the documentation that that class has a function elementById(), but I can't get that to work with classes, just ids. This isn't a HTML file a made or anything, so I don't have any control over whether it's class or id. Is there a way to do this that I'm missing? Thanks!
推荐答案
.pro
QT += webkitwidgets
main.cpp
#include <QApplication>
#include <QDebug>
#include <QWebView>
#include <QWebFrame>
#include <QWebElement>
int main( int argc, char *argv[] ) {
QApplication a(argc, argv);
QString l_html( "<html><body>"
"<div class='A'>div with class A</div>"
"<div class='B'>div with class B</div>"
"<div class='C'>div with class C</div>"
"<span class='A'>span with class A</span>"
"</body></html>" );
QWebView l_webView; // you can skip the QWebView if you dont want to show any widget
l_webView.page()->mainFrame()->setHtml( l_html );
QWebElement l_root( l_webView.page()->mainFrame()->documentElement() );
QWebElementCollection l_elements( l_root.findAll( ".a" ) );
foreach ( QWebElement l_e, l_elements ) {
// do what you want here
}
return a.exec();
}
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