xml_0">1. xml文件

test.xml 文件内容

xml"><?xml version="1.0" encoding="utf-8"?>
<library><book1><id>00000001</id><name>1111</name></book1>
</library>

2. 代码

void DataXml::read()
{//打开文件QFile file("test.xml");if(!file.open(QFileDevice::ReadOnly)){QMessageBox::information(NULL, tr("提示"), tr("结果文件打开失败，errNo:1"));return;}//创建XML对象QDomDocument doc;if (!doc.setContent(&file)) {QMessageBox::information(NULL, tr("提示"), tr("结果文件打开失败， errNo:2"));file.close();return;}//读取节点QDomElement root = doc.documentElement();QDomNodeList bookList = root.elementsByTagName("book1");QDomElement book = bookList.at(0).toElement();QString id = queryNodeValue(book, "id");QString name = queryNodeValue(book, "name");//关闭文件file.close();
}//注意：firstChild()是重点
QString DataXml::queryNodeValue(QDomNode node, QString nodeName)
{    return node.namedItem(nodeName).firstChild().nodeValue();
}