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