TinyXML遍历元素

Question

Using TinyXML to read an xml file. I want to loop over multiple elements but for some reason it only loops over the first element. A short example xml file would be:

<root>
    <wave_manager name="WaveManager01">
    </wave_manager>
    <wave_manager name="WaveManager02">
    </wave_manager>
</root>

The code to loop is:

TiXmlElement* root = _waveDoc.FirstChildElement("root");
for(TiXmlElement* e = root->FirstChildElement("wave_manager"); e != NULL; e = root->NextSiblingElement("wave_manager"))
{
    string wmName = e->Attribute("name");

}

So this only loops once and wmName does show WaveManager01, but then the for loop exists.

Answer 1

Your for statement is resetting the e element to root on every iteration. It is supposed to go to the next element in list - e .

Here is the correct code:

TiXmlElement* root = _waveDoc.FirstChildElement("root");

for(TiXmlElement* e = root->FirstChildElement("wave_manager"); e != NULL; e = e->NextSiblingElement("wave_manager"))
{
    string wmName = e->Attribute("name");

}