QXml

最新推荐文章于 2024-09-27 16:54:58 发布

原创最新推荐文章于 2024-09-27 16:54:58 发布 · 728 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#qt5

QT 专栏收录该内容

8 篇文章

订阅专栏

#include <QCoreApplication>

#include <QDomDocument>
#include <QFile>
#include <iostream>
#include <QDebug>
using namespace std;

void xmlFile()
{
    QDomDocument doc("mydocument");
    QFile file("mydocument.xml");
    if (!file.open(QIODevice::ReadOnly))
        return;
    if (!doc.setContent(&file)) {
        file.close();
        return;
    }
    file.close();

    // print out the element names of all elements that are direct children
    // of the outermost element.
    QDomElement docElem = doc.documentElement();

    QDomNode n = docElem.firstChild();

    while(!n.isNull()) {
        QDomElement e = n.toElement(); // try to convert the node to an element.
        if(!e.isNull())
        {
            cout << e.tagName().toStdString() << "-->" << e.text().toStdString() << endl; // the node really is an element.

            if(e.hasAttributes())
            {
                std::cout << qPrintable(e.attribute("href","href")) << "-->" << qPrintable(e.attribute("name","name")) << std::endl;
            }
        }
        n = n.nextSibling();
    }

    // Here we append a new element to the end of the document
    QDomElement elem = doc.createElement("img");
    elem.setAttribute("src", "myimage.png");
    docElem.appendChild(elem);

    {
        QFile file("mydocument.xml");
        if (!file.open(QIODevice::WriteOnly|QIODevice::Truncate))
            return;

        file.write(doc.toString().toStdString().c_str(),doc.toString().toStdString().size());
        file.close();
    }


}


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

    return a.exec();
}

#-------------------------------------------------
#
# Project created by QtCreator 2015-10-21T14:05:35
#
#-------------------------------------------------

QT       += core xml

QT       -= gui

TARGET = qt_xml
CONFIG   += console
CONFIG   -= app_bundle

TEMPLATE = app


SOURCES += main.cpp

<note>
 <to href="demo.asp" name="星星">George</to>
 <from>John</from>
 <heading>Reminder</heading>
 <body>Don't forget the meeting!</body>
</note>