Creating QDomDocument in Qt

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Article Metadata

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Tested with

Devices(s): Nokia 5800 XpressMusic

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Compatibility

Platform(s): S60 3rd Edition, FP1, FP2
S60 5th Edition

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Article

Keywords: QDomDocument, QDomElement

Created: tepaa (03 Jun 2009)

Last edited: hamishwillee (11 Oct 2012)

Overview

This code snippet demonstrates how to use QDomDocument to represent an XML document.

Preconditions

• Install latest Qt SDK

Header

#include <QDomDocument>
#include <QNetworkReply>
#include <QFile>

Create QDomDocument

From file:

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

From HTTP reply QNetworkReply:

QDomDocument* createDom(QNetworkReply* reply)
{
    QDomDocument* doc = new QDomDocument();
    doc->setContent(reply);
    return doc;
}

Getting data from QDomDocument

Example XML document:

<person>
    <id>1</id>
    <firstname>John</firstname>
    <lastname>Smith</lastname>
</person>

Getting data from QDomDocument:

QDomElement root = domDocument->documentElement();
 
if (root.tagName() == "person")
    {
    qDebug() << root.firstChildElement("id").text();
    qDebug() << root.firstChildElement("firstname").text();
    qDebug() << root.firstChildElement("lastname").text();
    // TODO: Store data, this code only debugs data into log
    }

See also

• For more information about QDomDocument, see QDomDocument Class Reference.

Postconditions

QDomDocument is created and data is parsed.