qt linux xml文件

#include <QCoreApplication>
#include <QFile>
#include <QDomDocument>
#include <QDebug>

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

    QDomDocument doc;
    QFile file("example.xml");

    if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
        qDebug() << "Cannot open file for reading:" << file.errorString();
        return -1;
    }

    if (!doc.setContent(&file)) {
        file.close();
        qDebug() << "Failed to parse the file into a DOM tree.";
        return -1;
    }
    file.close();

    QDomElement root = doc.documentElement();
    qDebug() << "Root element:" << root.tagName();

    QDomNodeList nodes = root.elementsByTagName("child");
    for (int i = 0; i < nodes.count(); ++i) {
        QDomElement element = nodes.at(i).toElement();
        qDebug() << "Child tag name:" << element.tagName()
                 << "value:" << element.text();
    }

    return a.exec();
}

<root>
    <child>Value1</child>
    <child>Value2</child>
</root>