// msxml.cpp : 定义控制台应用程序的入口点。

#include "stdafx.h"
#include <iostream>
#include <atlstr.h>
#import <MSXML6.dll>
using namespace MSXML2;
using namespace std;void msxml2_init()
{::CoInitialize(NULL);
}void msxml2_del()
{::CoUninitialize();
}
/* nodename: 要查找的节点的名字
* xmbuf: xml字符串
* 函数功能：查找目标节点的所有属性值
*/
void find_node_attr(char *nodename, char *xmlbuf)
{MSXML2::IXMLDOMDocumentPtr pDoc;HRESULT hr;hr=pDoc.CreateInstance(__uuidof(MSXML2::DOMDocument60));if(FAILED(hr)){  printf("无法创建DOMDocument对象，请检查是否安装了MS XML Parser 运行库!\n"); return ;} /* 加载xml字符串 */pDoc->loadXML(xmlbuf); MSXML2::IXMLDOMNodePtr pRoot_node, pNode;        MSXML2::IXMLDOMNamedNodeMapPtr pAttrs;MSXML2::IXMLDOMNodePtr pAttrItem;long nCount;/* 在树中查找名为Book的节点,"//"表示在任意一层查找 */char tmpnodename[20] = "//";strncat(tmpnodename, nodename, 3);pNode = pDoc->selectSingleNode(tmpnodename);/* get_attributes(）来获取该节点的所有属性列表 */pNode->get_attributes(&pAttrs);pAttrs->get_length(&nCount);cout << "共有" << nCount << "个属性值" << nCount << endl;for(int i = 0 ; i < nCount ; i++){ pAttrs->get_item(i, &pAttrItem);/* nodeName, nodeTypedValue得到属性名和属性值 */cout << (_bstr_t)pAttrItem->nodeName << ":" ;cout << (_bstr_t)pAttrItem->nodeTypedValue << endl;}    //使用过了的指针要释放。未使用的指针不要释放，否则会触发中断错误。
    pDoc.Release();pNode.Release();pAttrs.Release();pAttrItem.Release();
}/*
* 函数功能：遍历整个xml_buf的内容并打印节点名字和节点的属性值
*/
void print_xmlnode(char *xmlbuf)
{    MSXML2::IXMLDOMDocumentPtr pDoc;HRESULT hr;hr=pDoc.CreateInstance(__uuidof(MSXML2::DOMDocument60));if(FAILED(hr)){  printf("无法创建DOMDocument对象，请检查是否安装了MS XML Parser 运行库!\n"); return ;} /* 加载xml字符串 */pDoc->loadXML(xmlbuf); MSXML2::IXMLDOMNodePtr  pGwsIp_node, pRoot_node, pNode;        MSXML2::IXMLDOMNamedNodeMapPtr pAttrs = NULL;MSXML2::IXMLDOMNodePtr pAttrItem;/* 遍历整个xml_buf的内容并打印节点名字和节点的属性值 */pRoot_node = pDoc->firstChild;pGwsIp_node = pRoot_node->firstChild;//pDoc->firstChild->firstChild;
    MSXML2::DOMNodeType nodeType; long nCount ;//节点名称 root下子节点的个数unsigned int num = pRoot_node->childNodes->length;cout << "num = " << num << endl;char node_name[20] = {};//Gettext()获取节点值for(int i = 0; i < num; i++) {strcpy(node_name, pRoot_node->childNodes->item[i]->Gettext());cout << "node_name = " << node_name << endl;}/*IXMLDOMNamedNodeMap是xml中描述一个结点属性的接口，通过它用户可以对某个节点的属性进行操作*/pGwsIp_node->get_attributes(&pAttrs);pAttrs->get_length(&nCount);for(int i = 0 ; i < nCount ; i++){ pAttrs->get_item(i,&pAttrItem);/*get_nodeName,get_nodeTypedValue得到属性名和属性值*/cout << (_bstr_t)pAttrItem->nodeName << ":" ;cout << (_bstr_t)pAttrItem->nodeTypedValue << endl;}    //使用过了的指针要释放。未使用的指针不要释放，否则会触发中断错误。
    pDoc.Release();pRoot_node.Release();pGwsIp_node.Release();pAttrs.Release();pAttrItem.Release();
}int _tmain(int argc, _TCHAR* argv[])
{msxml2_init();char buf[300] = "<gwsctrl><gws ip=\"192.168.1.24\" emac=\"D4:CA:6D:35:0D:95\" wmac=\"D4:CA:6D:11:59:9F\"/><A>一个节点</A><B>二个节点</B></gwsctrl>";find_node_attr("gws",  buf);print_xmlnode(buf);getchar();msxml2_del();return 0;
}