xml写代码

#include <QtGui/QApplication>
#include <QDomDocument>
#include <QtGui>
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    QDomDocument doc;
    QDomNode instruction = doc.createProcessingInstruction("xml","version = \"1.0\" encoding = \" UTF-8\"");
    doc.appendChild(instruction);
    QDomElement root = doc.createElement("Notes");

    doc.appendChild(root);

    QDomElement note = doc.createElement("note");

    root.appendChild(note);

    QDomElement no = doc.createElement("no");

    note.appendChild(no);

    QDomText no_text = doc.createTextNode("001");

    no.appendChild(no_text);

    QFile file("test.xml");

    if (!file.open(QIODevice::WriteOnly | QIODevice::Truncate |QIODevice::Text))

    return  1 ;

    QTextStream out(&file);

    out.setCodec("UTF-8");

    doc.save(out,4,QDomNode::EncodingFromTextStream);

    file.close();



    return a.exec();
}

运行结果：

  <?xml version="1.0" encoding="UTF-8" ?>

-    <Notes>

-          <note>

                 <no>001</no>

       </note>

</Notes>