将QDomDocument数据用作文本的更好方法

QDomDocument doc;
// 假设已经加载或创建了QDomDocument对象

QFile file("output.xml");
if (file.open(QIODevice::WriteOnly | QIODevice::Text)) {
    QXmlStreamWriter writer(&file);
    writer.setAutoFormatting(true);  // 设置自动格式化输出

    writer.writeStartDocument();  // 写入XML文档的开始标签

    // 递归地写入QDomDocument的节点
    writeNode(writer, doc.documentElement());

    writer.writeEndDocument();  // 写入XML文档的结束标签

    file.close();
}

// 递归地写入QDomNode的子节点
void writeNode(QXmlStreamWriter& writer, const QDomNode& node) {
    if (node.isElement()) {
        const QDomElement element = node.toElement();
        writer.writeStartElement(element.tagName());  // 写入元素的开始标签

        // 写入元素的属性
        const QDomNamedNodeMap attributes = element.attributes();
        for (int i = 0; i < attributes.count(); ++i) {
            const QDomAttr attribute = attributes.item(i).toAttr();
            writer.writeAttribute(attribute.name(), attribute.value());
        }

        // 递归地写入子节点
        const QDomNodeList children = element.childNodes();
        for (int i = 0; i < children.count(); ++i) {
            writeNode(writer, children.item(i));
        }

        writer.writeEndElement();  // 写入元素的结束标签
    } else if (node.isText()) {
        const QDomText text = node.toText();
        writer.writeCharacters(text.data());  // 写入文本节点的内容
    }
}