void QueryXml()
{
IXMLDOMDocumentPtr pXMLDom;
HRESULT hr;
CoInitialize(NULL);
hr = pXMLDom.CreateInstance(__uuidof(DOMDocument40));
if (FAILED(hr))
{
printf("Failed to instantiate DOMDocument40 class\n");
return ;
}
//load
pXMLDom->async = VARIANT_FALSE;
if ( pXMLDom->load("c:\\he.xml") != VARIANT_TRUE)
{
printf("Failed load xml data from file.\n%s\n",
(LPCSTR)pXMLDom->parseError->Getreason());
return ;
}
IXMLDOMElementPtr pNode = (IXMLDOMElementPtr)pXMLDom->selectSingleNode("//china/*");
if (pNode == NULL)
{
printf("Invalid node fetched.\n%s\n",
(LPCSTR)pXMLDom->parseError->Getreason());
}
else
{
/*printf("Result from selectSingleNode:\nNode, <%s>:\n\t%s\n\n",
(LPCSTR)pNode->nodeName, (LPCSTR)pNode->xml);
*/
printf("解释XML文件\n");
}
IXMLDOMNodeListPtr pnl = pXMLDom->selectNodes("//china/*");
printf("Results from selectNodes:\n");
for (int i=0; i<pnl->length; i++)
{
pNode = pnl->item[i];
char cityName[400];memset(cityName,0,400);
VARIANT varVal;
pNode->get_nodeTypedValue(&varVal);
strcpy(cityName,(char*)(_bstr_t)varVal);
printf(cityName);
printf(":详细情况\n");
IXMLDOMNamedNodeMapPtr pAttrs = NULL;
IXMLDOMNodePtr pAttrItem;
pNode->get_attributes(&pAttrs);
long nCount ;
pAttrs->get_length(&nCount);
for(int i = 0 ; i < nCount ; i++)
{
pAttrs->get_item(i,&pAttrItem);
char tmpName[400];memset(tmpName,0,400);
strcpy(tmpName,(char*)(_bstr_t)pAttrItem->nodeName);
printf(tmpName);
printf(":");
char tmpValue[400];
memset(tmpValue,0,400);
strcpy(tmpValue,(char*)(_bstr_t)pAttrItem->nodeTypedValue );
printf(tmpValue);
printf("\n");
}
/*
printf("Node (%d), <%s>:\n\t%s\n",
i, (LPCSTR)pNode->nodeName, (LPCSTR)pnl->item[i]->xml);
*/
}
pXMLDom.Release();
pNode.Release();
pnl.Release();
CoUninitialize();
}
void NewXml()
{
CoInitialize(NULL);
IXMLDOMDocumentPtr pDoc;
IXMLDOMElementPtr xmlRoot;
//创建DOMDOCUMENT对象
HRESULT hr=pDoc.CreateInstance(_uuidof(DOMDocument40));
if(!SUCCEEDED(hr))
{
printf("无法创建DOMDocument对象，请检查是否安装了MS XML Parser 运行库!");
return ;
}
pDoc->raw_createElement((_bstr_t)(char*)"country", &xmlRoot);
pDoc->raw_appendChild(xmlRoot, NULL);
IXMLDOMElementPtr childChina;
pDoc->raw_createElement((_bstr_t)(char*)"china", &childChina);
IXMLDOMElementPtr childNode ;
pDoc->raw_createElement((_bstr_t)(char*)"City", &childNode);
childNode->Puttext("沈阳");//节点值
childNode->setAttribute("population","8,000,000");//属性名,属性值
childNode->setAttribute("area","10000");
childChina->appendChild(childNode);
pDoc->raw_createElement((_bstr_t)(char*)"City", &childNode);
childNode->Puttext("长春");//节点值
childNode->setAttribute("population","8,000,000");//属性名,属性值
childNode->setAttribute("area","10000");
childChina->appendChild(childNode);
xmlRoot->appendChild(childChina);
pDoc->save("c:\\he.xml");
pDoc.Release();
xmlRoot.Release();
childChina.Release();
childNode.Release();
CoUninitialize();
}
还在完善中,自己也很东西不会,也希望得到你们的帮助
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2004/4/13 16:31:00
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这两天学习xml成果,希望能给帮助你解决问题 vc操作xml
