qt xml 解析

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

<Config>

<!-- 注释 -->

<ChannelConfig>

<SlaveId>249</SlaveId>

<Channel ID='CH01'>AT_0901</Channel> <!-- 注意ID=' ' 单引号一定得加上，否则没法解析标签-->

<Channel ID='CH02'>AT_0902</Channel>

</ChannelConfig>

</Config>

QStringerrmsg;

int errline;

int errcol;

QString configFileName = QString(xmlfile);

QDomDocument doc;

if ( !doc.setContent(&conf, true, &errmsg, &errline, &errcol) ) {

qDebug() << "Error parsing config file at line: " << errline << ", col "

<< errcol << ": Msg: " << errmsg ;

QString msgPrompt = QString("Error parsing config file\nMsg: %1").arg(errmsg);

//TODO. do_log(...)

return;

}

QDomElementroot= doc.documentElement();

QDomElement child = root.firstChildElement("ChannelConfig");

for(QDomNode n = child.firstChild();!n.isNull(); n=n.nextSibling())

{

QDomElement e = n.toElement(); //e表示一个标签和值 "<tag ID='idValue'>value</tag>"

QString tag = e.tagName(); //tag

QString tagValue = e.text(); //value

qDebug()<<"tagName:"<<tag <<"tagValue:"<<tagValue;

if(e.hasAttribute("ID")){ //属性为ID

qDebug()<< e.attributeNode("ID").value(); //value为idValue

}

}