一,建立一个基于对话框的程序,工程名为xml;

二, 初始化OLE.

BOOL CXmlApp::InitInstance()

{

AfxOleInit();

…….

}



三, 在对话框中增加一个按钮,ID为IDC_CREATE,我们在这个按钮的响应函数中生成一个xml文件.

void CXmlDlg::OnCreate()

{

MSXML2::IXMLDOMDocumentPtr pDoc;

MSXML2::IXMLDOMElementPtr xmlRoot ;

//创建DOMDocument对象

HRESULT hr = pDoc.CreateInstance(__uuidof(MSXML2::DOMDocument30));

if(!SUCCEEDED(hr))

{

MessageBox("无法创建DOMDocument对象，请检查是否安装了MS XML Parser 运行库!");

}



//根节点的名称为china

pDoc->raw_createElement((_bstr_t)(char*)"china", &xmlRoot);

pDoc->raw_appendChild(xmlRoot, NULL);



MSXML2::IXMLDOMElementPtr childNode ;

pDoc->raw_createElement((_bstr_t)(char*)"City", &childNode);

childNode->Puttext("WuHan");//节点值

childNode->setAttribute("population","8,000,000");//属性名,属性值

childNode->setAttribute("area","10000");

xmlRoot->appendChild(childNode);



pDoc->raw_createElement((_bstr_t)(char*)"City", &childNode);

childNode->Puttext("ShangHai");

childNode->setAttribute("population","12,000,000");

childNode->setAttribute("area","12000");

xmlRoot->appendChild(childNode);



//保存到文件

//如果不存在就建立,存在就覆盖

pDoc->save("f:\\he.xml");

}

不要忘了#import "msxml4.dll" //引入类型库



四, 再增加一个按钮,ID为IDC_GET,在这个按钮的响应函数中读取xml文件.

void CXmlDlg::OnGet()

{

//创建DOMDocument对象

MSXML2::IXMLDOMDocumentPtr pDoc;

HRESULT hr = pDoc.CreateInstance(__uuidof(MSXML2::DOMDocument30));

if(!SUCCEEDED(hr))

{

MessageBox("无法创建DOMDocument对象，请检查是否安装了MS XML Parser 运行库!");

}

//加载文件

pDoc->load("f:\\he.xml");



//在树中查找名为City的节点,"//"表示在任意一层查找

MSXML2::IXMLDOMElementPtr childNode ;

childNode = (MSXML2::IXMLDOMElementPtr)(pDoc->selectSingleNode("//City"));



//得到节点类型

MSXML2::DOMNodeType nodeType;

childNode->get_nodeType(&nodeType);



//节点名称

BSTR var;

CString name;

childNode->get_nodeName(&var);

name = (char*)(_bstr_t)var;



//节点值

VARIANT varVal;

childNode->get_nodeTypedValue(&varVal);

CString strValue = (char*)(_bstr_t)varVal;



//节点属性,放在链表中

MSXML2::IXMLDOMNamedNodeMapPtr pAttrs = NULL;

MSXML2::IXMLDOMNodePtr pAttrItem;

childNode->get_attributes(&pAttrs);

long nCount ;

pAttrs->get_length(&nCount);

for(int i = 0 ; i < nCount ; i++)

{

pAttrs->get_item(i,&pAttrItem);

//我们可以通过函数get_nodeName,get_nodeTypedValue得到属性名和属性值

//也可以直接得到

CString strAttrName = (char*)(_bstr_t)pAttrItem->nodeName;

CString strAttrValue = (char*)(_bstr_t)pAttrItem->nodeTypedValue;

}

}