xml ファイルの作成:Qt

mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QDebug>

#include <QFile>
#include <QXmlStreamWriter>

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    QFile file("D:\\soft\\pleiades\\xampp\\htdocs\\www\\test.xml");
    file.open(QIODevice::WriteOnly | QIODevice::Text);

    QXmlStreamWriter stream(&file);

    stream.setAutoFormatting(true);

    stream.writeStartDocument();
    stream.writeStartElement("root");

    stream.writeStartElement("item");
    stream.writeAttribute("name", "AAA");
    stream.writeCharacters ("field1");
    stream.writeEndElement();

    stream.writeStartElement("item");
    stream.writeAttribute("name", "BBB");
    stream.writeCharacters ("field2");
    stream.writeEndElement();

    stream.writeEndDocument();//

    file.close();

}

MainWindow::~MainWindow()
{
    delete ui;
}

test.xml

<?xml version="1.0" encoding="UTF-8"?>
<root>
    <item name="AAA">field1</item>
    <item name="BBB">field2</item>
</root>