本程式已經極度精簡了，

執行截圖如下：

程式碼如下：

#include <QApplication>
#include <QXmlStreamWriter>
#include <QDebug>
#include <QFile>

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

    QFile file("my.xml");
    if (!file.open(QFile::ReadWrite|QIODevice::Truncate))
    {
        qDebug() << "Error: cannot open file";
        return 1;
    }


    QXmlStreamWriter stream(&file);
    stream.setAutoFormatting(true);
    stream.writeStartDocument();
    stream.writeStartElement("最外層");
    stream.writeTextElement("結點一", "哆啦A夢");
    stream.writeTextElement("結點二", "蠟筆小新");

    //第一個
    stream.writeStartElement("內一層");
    stream.writeTextElement("姓名", "球球");
    stream.writeTextElement("照片檔案", "C:\\xxx.txt");
    stream.writeTextElement("家庭關係檔案", "C:\\xxx.data");
    stream.writeTextElement("是否有寵物","有個雞兒");
    stream.writeTextElement("月工資","13999");
    stream.writeTextElement("有幾個男朋友","1");
    stream.writeStartElement("車有幾個輪子");
    stream.writeAttribute("include", "1");
    stream.writeTextElement("前男友檔案", "C:\\xxxx.xml");
    stream.writeEndElement();
    stream.writeEndElement();

    //第二個
    stream.writeStartElement("內一層");
    stream.writeTextElement("姓名", "球球");
    stream.writeTextElement("照片檔案", "C:\\xxx.txt");
    stream.writeTextElement("家庭關係檔案", "C:\\xxx.data");
    stream.writeTextElement("是否有寵物","有個雞兒");
    stream.writeTextElement("月工資","13999");
    stream.writeTextElement("有幾個男朋友","1");
    stream.writeStartElement("車有幾個輪子");
    stream.writeAttribute("include", "1");
    stream.writeTextElement("前男友檔案", "C:\\xxxx.xml");
    stream.writeEndElement();
    stream.writeEndElement();

    stream.writeEndDocument();
    file.close();

    qDebug() << "write finished!";

    return a.exec();
}