使用QXmlStreamWriter创建xml

    QByteArray xmlcontents;
    QXmlStreamWriter xmlstreamwriter(&xmlcontents);
    xmlstreamwriter.setAutoFormatting(true);
    xmlstreamwriter.writeStartDocument();
    xmlstreamwriter.writeStartElement("xml");
    xmlstreamwriter.writeStartElement("round");
    xmlstreamwriter.writeAttribute("id", mRoundId);
    xmlstreamwriter.writeAttribute("tableid", mTableId);
    //player1
    xmlstreamwriter.writeStartElement("player1");
    xmlstreamwriter.writeAttribute("framescore", mPlayer1Frame);
    xmlstreamwriter.writeAttribute("points", mPlayer1Point);
    xmlstreamwriter.writeAttribute("break", mPlayer1ContinuePoint);
　　xmlstreamwriter.writeCharacters("Hello World");   //添加内容
    xmlstreamwriter.writeEndElement();
    //player2
    xmlstreamwriter.writeStartElement("player2");
    xmlstreamwriter.writeAttribute("framescore", mPlayer2Frame);
    xmlstreamwriter.writeAttribute("points", mPlayer2Point);
    xmlstreamwriter.writeAttribute("break", mPlayer2ContinuePoint);
    xmlstreamwriter.writeEndElement();
    xmlstreamwriter.writeEndElement();
    xmlstreamwriter.writeEndElement();
    xmlstreamwriter.writeEndDocument();

结果如下

<?xml version="1.0" encoding="UTF-8"?>
<xml>
    <round id="" tableid="1">
        <player1 framescore="" points="" break="">Hello World</player1>
        <player2 framescore="" points="" break=""/>
    </round>
</xml>