void ParseXML::parse(QString file_name)
{
if(file_name.isEmpty())
return;
QFile file(file_name);
if(!file.open(QFile::ReadOnly | QFile::Text))
{
QMessageBox::information(NULL, QString("title"),QString("open error!"));
return;
}
QDomDocument document;
QString error;
int row = 0, column = 0;
if(!document.setContent(&file, false, &error, &row,&column))
{
QMessageBox::information(NULL, QString("title"),QString("parse file failed at line row and column") +QString::number(row, 10) + QString(",") + QString::number(column,10));
return;
}
if(document.isNull())
{
QMessageBox::information(NULL, QString("title"),QString("document is null!"));
return;
}
QDomElement root =document.documentElement();
//root_tag_name为persons
QString root_tag_name =root.tagName();
if(root.hasAttribute("name"))
{
//name为Qt
QString name =root.attributeNode("name").value();
}
//获取id="1"的节点
QDomElement person =root.firstChildElement();
if(person.isNull())
return;
QString person_tag_name= person.tagName();
//id为1
QString id =person.attributeNode("id").value();
//获取子节点，数目为2
QDomNodeList list =root.childNodes();
int count =list.count();
for(int i=0; i
{
QDomNode dom_node = list.item(i);
QDomElement element =dom_node.toElement();
//获取id值，等价
QString id_1 =element.attributeNode("id").value();
QString id_2 = element.attribute("id");
//获取子节点，数目为4，包括：name、age、email、website
QDomNodeList child_list =element.childNodes();
int child_count = child_list.count();
for(int j=0; j
{
QDomNodechild_dom_node = child_list.item(j);
QDomElement child_element = child_dom_node.toElement();
QStringchild_tag_name = child_element.tagName();
QStringchild__tag_value = child_element.text();
}
}
//按照name、age、email、website的顺序获取值
QDomElement element =person.firstChildElement();
while(!element.isNull())
{
QString tag_name = element.tagName();
QString tag_value = element.text();
element = element.nextSiblingElement();
}
}
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