IXMLDOMDocumentPtr pDoc;
IXMLDOMNodePtr pXmlInstruction;
HRESULT hr = pDoc.CreateInstance("Microsoft.XMLDOM");
CComVariant vFileName("ReadXML.xml");
CComVariant cComVari;
VARIANT_BOOL vb;
hr = pDoc->load(vFileName,&vb);
BSTR bstrInfo;
BSTR bstrInfo2;
VARIANT vInfo;
//文档节点
pDoc->get_nodeName(&bstrInfo); //#document
SysFreeString(bstrInfo);
pDoc->get_nodeValue(&vInfo); //NULL
//第一个节点都是通过 document 的 get_firstChild 来获取
hr = pDoc->get_firstChild(&pXmlInstruction);
#if 0
//<?xml version="1.0" encoding="gb2312"?>
pXmlInstruction->get_nodeName(&bstrInfo); //xml
SysFreeString(bstrInfo);
pXmlInstruction->get_nodeValue(&vInfo); //version="1.0" encoding="gb2312"
pXmlInstruction->get_text(&bstrInfo); //version="1.0" encoding="gb2312"
SysFreeString(bstrInfo);
pXmlInstruction->get_dataType(&vInfo); //null
pXmlInstruction->get_nodeTypeString(&bstrInfo);//processinginstruction
SysFreeString(bstrInfo);
#endif
IXMLDOMNodePtr pComment1;
pXmlInstruction->get_nextSibling(&pComment1);
#if 0 //注释操作
//<!-- Copyright w3school.com.cn -->
pComment1->get_nodeName(&bstrInfo); //#comment
SysFreeString(bstrInfo);
pComment1->get_nodeValue(&vInfo); // Copyright w3school.com.cn
pComment1->get_text(&bstrInfo); // Copyright w3school.com.cn
SysFreeString(bstrInfo);
pComment1->get_nodeTypeString(&bstrInfo); //comment
SysFreeString(bstrInfo);
//cComVari = "注释修改";
//pComment1->put_nodeValue(cComVari); //ok
bstrInfo = _com_util::ConvertStringToBSTR("注释修改123456");
pComment1->put_text(bstrInfo);
SysFreeString(bstrInfo);
#endif
IXMLDOMNodePtr pStoreNode;
#if 0 //storelist节点
IXMLDOMNodeListPtr pStoreList;
bstrInfo = _com_util::ConvertStringToBSTR("bookstore");
hr = pDoc->getElementsByTagName(bstrInfo,&pStoreList);
SysFreeString(bstrInfo);
long lCount;
hr = pStoreList->get_length(&lCount); //1
IXMLDOMNodePtr pNextNode;
hr = pStoreList->get_item(0,&pNextNode);
pNextNode->get_nodeName(&bstrInfo); //bookstore
pNextNode->get_nodeValue(&vInfo); //null
//所有文本：Harry Potter J K. Rowling 2005 29.99
//Everyday Italian Giada De Laurentiis 2005 30.00
//Learning XML Erik T. Ray 2003 39.95
//XQuery Kick Start James McGovern Per Bothner Kurt Cagle James Linn Vaidyanathan Nagarajan 2003 49.99
pNextNode->get_text(&bstrInfo2);
SysFreeString(bstrInfo);
SysFreeString(bstrInfo2);
#endif
#if 0 //通过 getElementsByTagName 来访问元素
IXMLDOMNodeListPtr pTitleList;
bstrInfo = _com_util::ConvertStringToBSTR("title");
hr = pDoc->getElementsByTagName(bstrInfo,&pTitleList);
SysFreeString(bstrInfo);
long lCount;
hr = pTitleList->get_length(&lCount); //4
IXMLDOMNodePtr pListElement;
for(long lLoop = 0; lLoop < lCount; lLoop++)
{
pTitleList->get_item(lLoop,&pListElement);
//访问属性
IXMLDOMNamedNodeMapPtr pAttriNodeMap;
long lAttriListLength;
pListElement->get_attributes(&pAttriNodeMap);
pAttriNodeMap->get_length(&lAttriListLength);//[0]:1
for(long lAttriLoop = 0; lAttriLoop < lAttriListLength; lAttriLoop++)
{
IXMLDOMNodePtr pNode;
pAttriNodeMap->get_item(lAttriLoop,&pNode);
pNode->get_nodeName(&bstrInfo);//[0]:lang1 [1]:lang2 [2]:lang3 [3]:lang4
pNode->get_nodeValue(&vInfo);//[0]:en1 [1]:en2 [2]:en3 [3]:en4
pNode->get_text(&bstrInfo2);//[0]:en1 [1]:en2 [2]:en3 [3]:en4
SysFreeString(bstrInfo);
SysFreeString(bstrInfo2);
pNode->get_nodeTypeString(&bstrInfo);//[0]:attribute
SysFreeString(bstrInfo);
}
pListElement->get_nodeValue(&vInfo);//null
pListElement->get_text(&bstrInfo);//[0]:Harry Potter [1]:Everyday Italian [2]:Learning XML [3]:XQuery Kick Start
pListElement->get_nodeTypeString(&bstrInfo2);//element
SysFreeString(bstrInfo);
SysFreeString(bstrInfo2);
}
#endif
#if 0//修改节点
IXMLDOMNodeListPtr pAuthorList;
bstrInfo = _com_util::ConvertStringToBSTR("author");
pDoc->getElementsByTagName(bstrInfo,&pAuthorList);
SysFreeString(bstrInfo);
long lAuthorNumber;
pAuthorList->get_length(&lAuthorNumber);
IXMLDOMNodePtr pAuthorNode;
pAuthorList->get_item(lAuthorNumber - 1,&pAuthorNode);
#if 1 //通过 pAuthorNode 和 pChildOfAuthor 都可以成功修改 author 内容
//pAuthorNode 是元素节点 pChildOfAuthor则是文本节点
pAuthorNode->get_nodeName(&bstrInfo2);//author
pAuthorNode->get_nodeTypeString(&bstrInfo);//element
pAuthorNode->get_nodeValue(&vInfo);//null
SysFreeString(bstrInfo);
SysFreeString(bstrInfo2);
bstrInfo = _com_util::ConvertStringToBSTR("test");
pAuthorNode->put_text(bstrInfo); //可以成功修改
SysFreeString(bstrInfo);
#else
IXMLDOMNodePtr pChildOfAuthor;
pAuthorNode->get_firstChild(&pChildOfAuthor);
pChildOfAuthor->get_nodeName(&bstrInfo2);//#text
pChildOfAuthor->get_nodeTypeString(&bstrInfo);//text
pChildOfAuthor->get_nodeValue(&vInfo);//Vaidyanathan Nagarajan
SysFreeString(bstrInfo);
SysFreeString(bstrInfo2);
bstrInfo = _com_util::ConvertStringToBSTR("shenzhen");
pChildOfAuthor->put_text(bstrInfo);
SysFreeString(bstrInfo);
#endif
#endif
#if 1//修改属性
IXMLDOMNodeListPtr pBookList;
bstrInfo = _com_util::ConvertStringToBSTR("book");
pDoc->getElementsByTagName(bstrInfo,&pBookList);
SysFreeString(bstrInfo);
long lBookNum;
pBookList->get_length(&lBookNum);
for(long lLoop = 0; lLoop < lBookNum; lLoop++)
{
IXMLDOMNodePtr pBookNode;
pBookList->get_item(lLoop,&pBookNode);
IXMLDOMNamedNodeMapPtr pAttriMap;
pBookNode->get_attributes(&pAttriMap);
long lAttriNum;
pAttriMap->get_length(&lAttriNum);
for(long lAttriLoop = 0; lAttriLoop < lAttriNum; lAttriLoop++)
{
IXMLDOMNodePtr pElementOfAttriMap;
pAttriMap->get_item(lAttriLoop,&pElementOfAttriMap);
pElementOfAttriMap->get_nodeName(&bstrInfo);
SysFreeString(bstrInfo);
hr = pElementOfAttriMap->get_nodeValue(&vInfo);
char *pszAttri = _com_util::ConvertBSTRToString(vInfo.bstrVal);
CString strAttri(pszAttri);
strAttri += "'s book";
vInfo.bstrVal = strAttri.AllocSysString();
delete []pszAttri;
hr = pElementOfAttriMap->put_nodeValue(vInfo);
}
//IXMLDOMNodePtr pChildOfBook;
//pBookNode->get_firstChild(&pChildOfBook);//获取到title子节点，与要获取的属性不符
//pChildOfBook->get_nodeName(&bstrInfo);//获取到title子节点，与要获取的属性不符
//SysFreeString(bstrInfo);
}
#endif
cComVari = "D:\\Other\\XX_学习资料\\IT\\MSXML\\new.xml";
pDoc->save(cComVari);
对应xml:
<?xml version="1.0" encoding="gb2312"?> <!-- Copyright w3school.com.cn --> <bookstore> <book category="children"> <title lang1="en1">Harry Potter</title> <author>J K. Rowling</author> <year>2005</year> <price>29.99</price> </book> <book category="cooking"> <title lang2="en2">Everyday Italian</title> <author>Giada De Laurentiis</author> <year>2005</year> <price>30.00</price> </book> <book category="web" cover="paperback"> <title lang3="en3">Learning XML</title> <author>Erik T. Ray</author> <year>2003</year> <price>39.95</price> </book> <book category="web"> <title lang4="en4">XQuery Kick Start</title> <author>James McGovern</author> <author>Per Bothner</author> <author>Kurt Cagle</author> <author>James Linn</author> <author>Vaidyanathan Nagarajan</author> <year>2003</year> <price>49.99</price> </book> </bookstore>
