how to modify the text of node in xml docment?

[GChen]

hi,everybody.

some xml docment like this:
<root><firstchild>text<firstchild></root>

i want to change the "text" to "upatetext",and i try the function "setNodeValue()",
but it doesn't work.

can anyone help me?
thanks!

[fanat9]

QDomDocument xmlDocument;
if ( !xmlDocument.setContent(&xmlFile, true, &errorStr, &errorLine, &errorColumn) )
{
....
}
 
QDomElement	rootElement = xmlDocument.documentElement();
rootElement.firstChildElement("firstchild").firstChild().setNodeValue("upatetext");

QDomDocument xmlDocument;
if ( !xmlDocument.setContent(&xmlFile, true, &errorStr, &errorLine, &errorColumn) )
{
....
}

QDomElement	rootElement = xmlDocument.documentElement();
rootElement.firstChildElement("firstchild").firstChild().setNodeValue("upatetext");

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[aamer4yu]

Just a comment -
Actually the text is a child node. You can identify it by node.isText() function.

Hence you need to get the firstchildelement of "firstchild" node

[foggy-mind]

hi,
I have one problem.

some xml
<?xml version='1.0'?>
<configs>
<dbName>database</dbName>
<userName>user</userName>
</configs>

when xml document is like this everithing work fine:

QDomElement rootElement = cfgData.documentElement();
	rootElement.firstChildElement("dbName").firstChild().setNodeValue("newdbname");
	rootElement.firstChildElement("userName").firstChild().setNodeValue("newusername");
 
	file = new QFile("config.xml");
	file->open(QIODevice::WriteOnly | QIODevice::Text);
	xml = new QTextStream(file);
	xml->operator <<(cfgData.toString());
	file->close();
	delete file;
	delete xml;

QDomElement rootElement = cfgData.documentElement();
	rootElement.firstChildElement("dbName").firstChild().setNodeValue("newdbname");
	rootElement.firstChildElement("userName").firstChild().setNodeValue("newusername");

	file = new QFile("config.xml");
	file->open(QIODevice::WriteOnly | QIODevice::Text);
	xml = new QTextStream(file);
	xml->operator <<(cfgData.toString());
	file->close();
	delete file;
	delete xml;

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when user name or db name set empty (this is need when I dont want to know the last connection data) and save the xml data into file, the tags
<dbName>database</dbName>
<userName>user</userName>
changed to <userName/> and <dbName/>. but when I wanna save new text into this tags with setNodeValue(). after saving xml data tags still empty. when I change the tags declaration like this <dbName>...</dbName> <userName>...</userName> eveithing work fine.

WHERE IS MY MISTAKE???

thanks....

[Lykurg]

<dbName>database</dbName>

Here you have a DOM node.

<dbName />

Here you haven't so you must create one in qt and append it. Like

QDomText t = doc.createTextNode("Hello World");
dbName.appendChild(t);

QDomText t = doc.createTextNode("Hello World");
dbName.appendChild(t);

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[foggy-mind]

yea, your right. thanks.