QDomDocument无法使用<!doctype>设置HTML文档的内容。标签 [英] QDomDocument fails to set content of an HTML document with <!doctype> tag
问题描述
当我将 QDomDocument
与HTML内容一起使用时,如果存在<!doctype html> $ c $,它将无法设置内容c>在文档开头。但是为什么呢?例如,以
为例,请考虑以下代码段:
When I use QDomDocument
with HTML content, it fails to set content if there is a <!doctype html>
at the beginning of the document. But actually why?!
for example consider the following snippet of code:
QDomDocument doc;
QString content = "<!doctype html><html><body><a href='bar'>foo</a></body></html>";
qDebug() << doc.setContent(content,false,0,0);
QDomElement docElem = doc.documentElement();
QDomNode a = docElem.firstChild();
qDebug() << doc.childNodes().size() << docElem.childNodes().size();
什么都没有,但有 false
的列表
nothing but a list of false
s are the output of this code!
推荐答案
HTML是HTML,XML是XML。因此, Qt XML
无法正确解析HTML代码。要解析HTML文件,请考虑使用 Qt Webkit
模块而不是 Qt XML
模块。要将其包含在项目中,只需在项目文件中添加 QT + = webkit
。
HTML is HTML and XML is XML. Consequently, Qt XML
is not able to parse HTML code correctly. To parse HTML files, consider using the Qt Webkit
module instead of the Qt XML
module. To include it in your project, you just have to add QT += webkit
in your project file.
到解析HTML数据,您将必须执行以下操作:
To parse your HTML datas, you will have to do something like this :
QString content = "<html><body><a href='bar'>foo</a></body></html>";
QWebPage webPage;
QWebFrame * frame = webPage.mainFrame();
frame->setHtml(content);
QWebElement htmlElement = frame->documentElement(); // Equivalent of the QDomElement
有关更多信息,请参见 Qt Webkit文档和 QWebElement文档。
For further informations, see the Qt Webkit documentation and the QWebElement documentation.
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