vc 解析XML笔记

//  ConsoleReadXml.cpp : Defines the entry point for the console application.
//

#include  " stdafx.h "
#import  " msxml4.dll "
#include  " stdlib.h "
#include  < iostream >
#include  " string "
#include   " atlbase.h "  
#include  " atlstr.h "
#include  " comutil.h "
using   namespace  std;
using   namespace  MSXML2;

int  _tmain( int  argc, _TCHAR *  argv[])
{
    CoInitialize(NULL);
     char  temp[ 500 ];
    MSXML2::IXMLDOMDocumentPtr pDoc;
    HRESULT hr;
    hr = pDoc.CreateInstance(__uuidof(MSXML2::DOMDocument40));
     if (FAILED(hr))
    {  
        cout << " msxml4.dll can't find  " << endl;
         return   1 ;
    }
     string  strXml = " <?xml version=\ " 1.0 \ "  encoding=\ " utf - 8 \ " ?> <Users><User><UserName>Test1</UserName><PassWord>MyPassWord</PassWord></User><User><UserName>Test1</UserName><PassWord>MyPassWord</PassWord></User></Users> " ;

    
    VARIANT_BOOL b = pDoc -> loadXML((_bstr_t)strXml.c_str());

     // 根节点
    MSXML2::IXMLDOMElementPtr spElement;

    pDoc -> get_documentElement( & spElement);

    
    CComBSTR varNodeText;
    CComBSTR varNodeTypeName;
     string  temp2;

    MSXML2::IXMLDOMNodeListPtr spUserNodeList;

     // 获取第一层节点值。Users标签下值
    spElement -> get_childNodes( & spUserNodeList);
    spElement -> get_nodeName( & varNodeText);
    CW2A str(varNodeText);
    cout << str << endl;
     // temp=varNodeText;
     // cout>>temp.c_str()<<endl;

     // 获取节点数
     long  luserCount;
    spUserNodeList -> get_length( & luserCount);

     // 遍历所有节点
     for  ( int  i = 0 ;i < luserCount;i ++ )
    {
        MSXML2::IXMLDOMNodePtr spUserChld;
        MSXML2::IXMLDOMNodeListPtr spUserChldList;
        
         // 获取子节点
        spUserNodeList -> get_item(i, & spUserChld);
        spUserChld -> get_nodeName( & varNodeTypeName);
        CW2A strtemp(varNodeTypeName);
        cout << strtemp << endl;
         // temp=varNodeTypeName;
         // cout<<temp<<endl;

         // 根据子节点再获取子节点信息
        spUserChld -> get_childNodes( & spUserChldList);
         long  luserChldcnt;
        spUserChldList -> get_length( & luserChldcnt);
         for  ( int  j = 0 ;j < luserChldcnt;j ++ )
        {
            MSXML2::IXMLDOMNodePtr endNode;
            spUserChldList -> get_item(j, & endNode);
            endNode -> get_nodeName( & varNodeTypeName);
             // temp=varNodeTypeName;
             // cout<<temp<<endl;
            
            CW2A printstr(varNodeTypeName);
            cout << printstr << " -- " ;
            
            endNode -> get_text( & varNodeText);

            CW2A printstr2(varNodeText);
            cout << printstr2 << endl;
            endNode.Release();

        }
        spUserChldList.Release();
        spUserChld.Release();
        
    }
    spUserNodeList.Release();
    spElement.Release();
    pDoc.Release();

    
    CoUninitialize();
     return   0 ;
}

程序输出图