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有哪位高手有XML操作函数GetNamedItem的使用例子的原代码
以下语句有错吗,为甚么我每次到最后一句就出错呢
IXMLDOMNamedNodeMap *NodeMap;
IXMLDOMNode *Node;
Node=NodeMap->getNamedItem ("DLL_NAME");
CString buff1=Node->text.copy();
IXMLDOMNode *pIXMLDOMNode = NULL;
IXMLDOMNamedNodeMap *pIXMLDOMNamedNodeMap = NULL;
BSTR bstrAttributeName = ::SysAllocString(_T("dateModified"));
IXMLDOMElement *pIXMLDOMElement = NULL;
IXMLDOMDocument *pIXMLDOMDocument = NULL;
VARIANT varValue;
try
{
// Create an instance of DOMDocument and initialize pIXMLDOMDocument.
// Load/create an XML fragment.
hr = pIXMLDOMDocument->get_documentElement(&pIXMLDOMElement);
SUCCEEDED(hr) ? 0 : throw hr;
if(pIXMLDOMElement)
{
hr = pIXMLDOMElement->get_attributes(&pIXMLDOMNamedNodeMap);
if(SUCCEEDED(hr) && pIXMLDOMNamedNodeMap)
{
hr = pIXMLDOMNamedNodeMap->getNamedItem(bstrAttributeName, &pIXMLDOMNode);
if(SUCCEEDED(hr) && pIXMLDOMNode)
{
pIXMLDOMNode->get_nodeValue(&varValue);
::MessageBox(NULL, _bstr_t(varValue), _T("Item Value"), MB_OK);
pIXMLDOMNode->Release();
pIXMLDOMNode = NULL;
}
pIXMLDOMNamedNodeMap->Release();
pIXMLDOMNamedNodeMap = NULL;
}
pIXMLDOMElement->Release();
pIXMLDOMElement = NULL;
}
::SysFreeString(bstrAttributeName);
bstrAttributeName = NULL;
}
catch(...)
{
if(bstrAttributeName)
::SysFreeString(bstrAttributeName);
if(pIXMLDOMElement)
pIXMLDOMElement->Release();
if(pIXMLDOMNamedNodeMap)
pIXMLDOMNamedNodeMap->Release();
if(pIXMLDOMNode)
pIXMLDOMNode->Release();
DisplayErrorToUser();
}
// Release pIXMLDOMDocument when finished with it.
