Qt read-write XML file

XML file

<?xml version= "1.0" encoding= "UTF-8"?>
<Root>
<item attr1= "0" attr2= "1"/>
<itemList>
<item1>0</item1>
<item2>1</item2>
</itemList>
</Root>

QT Code

QtReadWriteXML.h header File

#ifndef Qt_readwritexml_h
#define Qt_readwritexml_h

#include <QtGui>

Class Qt_readwritexml:public Qwidget
{
Q_object

Public
Qt_readwritexml (Qwidget *parent = 0, Qt::wflags flags = 0);
~qt_readwritexml ();
Private Slots:
void ReadXml ();
void WriteXml ();
};

#endif

QtReadWriteXML.cpp Original File

#include "qt_readwritexml.h"
#include <QFile>
#include <QDomDocument>
#include <QXmlStreamWriter>

Qt_readwritexml::qt_readwritexml (Qwidget *parent, Qt::wflags flags): Qwidget (parent, flags)
{
Qvboxlayout *lay=new qvboxlayout ();
SetLayout (lay);

Qpushbutton *b1=new Qpushbutton ("write");
Qpushbutton *b2=new Qpushbutton ("read");
Lay->addwidget (B1);
Lay->addwidget (B2);
Connect (b1,signal (clicked ()), This,slot (WRITEXML ()));
Connect (b2,signal (clicked ()), This,slot (READXML ()));
}

Qt_readwritexml::~qt_readwritexml ()
{

}

Read XML file
void Qt_readwritexml::readxml ()
{
QString filepath= "E:/test.xml";
QFile file (FilePath);
if (File.Open (qfile::readonly| Qfile::text))
{
Qdomdocument Dom;
if (Dom.setcontent (&file))
{
Qdomelement rootdom=dom.documentelement ();
if (rootdom.tagname () = = "Root")
{
Qdomnode Subnode=rootdom.firstchild ();
while (!subnode.isnull ())
{
Qdomelement subelement=subnode.toelement ();
if (subelement.tagname () = = "Item")
{
for (int i=0;i<subelement.attributes (). Count (); i++)
{
Qdebug () <<subelement.attributes (). Item (i). NodeName ();//attr1,attr2
Qdebug () <<subelement.attributes (). Item (i). NodeValue (). ToInt ();//0,1
}
}
else if (subelement.tagname () = = "ItemList")
{
Qdomnode Childnode=subelement.firstchild ();
while (!childnode.isnull ())
{
Qdebug () <<childnode.toelement (). NodeName ();//item1,item2
Qdebug () <<childnode.toelement (). text ();//0,1
Childnode=childnode.nextsibling ();
}
}
Subnode=subnode.nextsibling ();
}
}
}
File.close ();
}
}

Write an XML file
void Qt_readwritexml::writexml ()
{
QString filepath= "E:/test.xml";
QFile file (FilePath);
if (File.Open (qfile::writeonly| Qfile::text))
{
Qxmlstreamwriter XmlWriter (&file);
Xmlwriter.setautoformatting (TRUE);
Xmlwriter.writestartdocument ();
Xmlwriter.writestartelement ("Root");

Xmlwriter.writestartelement ("item");
Xmlwriter.writeattribute ("attr1", "0");
Xmlwriter.writeattribute ("Attr2", "1");
Xmlwriter.writeendelement ();

Xmlwriter.writestartelement ("ItemList");
Xmlwriter.writetextelement ("Item1", "0");
Xmlwriter.writetextelement ("Item2", "1");
Xmlwriter.writeendelement ();

Xmlwriter.writeendelement ();
Xmlwriter.writeenddocument ();
File.close ();
}
}