XML操作类

XMLObject.h

---

#pragma once

 

class CXMLObject
{
public:
 CXMLObject(void);
 ~CXMLObject(void);
public:

 

 static MSXML::IXMLDOMDocumentPtr CLoadXML(CString strXML); //建立一个XML对象

 

 static MSXML::IXMLDOMDocumentPtr CLoad(CString strPath); //根据XML路径加载XML
 
 static bool CSave(MSXML::IXMLDOMDocumentPtr xmlDoc,CString strPath); //将XML存到指定路径

 

 static MSXML::IXMLDOMElementPtr AppendNode(MSXML::IXMLDOMDocumentPtr xmlDoc, //在指定节点上添加节点
            MSXML::IXMLDOMElementPtr xmlNode,
            CString nodeName);
 
 static MSXML::IXMLDOMElementPtr AppendNode(MSXML::IXMLDOMDocumentPtr xmlDoc,  //在指定节点上添加节点
            MSXML::IXMLDOMElementPtr xmlNode,
            CString nodeName, CString nodeValue);
 
 static MSXML::IXMLDOMElementPtr AppendAttr(MSXML::IXMLDOMDocumentPtr xmlDoc, //在指定节点上添加属性和属性值
            MSXML::IXMLDOMElementPtr xmlNode,
            CString attrName, CString attrValue);

 

 static MSXML::IXMLDOMElementPtr GetDocElement(MSXML::IXMLDOMDocumentPtr xmlDoc); //获得XML的根节点

 

 static CString GetAttrValue(MSXML::IXMLDOMElementPtr xmlNode,CString attrName);//根据属性名获得属性值

 

};

---

XMLObject.cpp

---

#include "StdAfx.h"
#include "./xmlobject.h"

 

CXMLObject::CXMLObject(void)
{}

 

CXMLObject::~CXMLObject(void)
{}

 

MSXML::IXMLDOMDocumentPtr CXMLObject::CLoadXML(CString strXML)
{
 MSXML::IXMLDOMDocumentPtr xmlDoc;
 HRESULT hr = xmlDoc.CreateInstance(MSXML::CLSID_DOMDocument);
 if(FAILED(hr))
  throw("无法创建DOMDocument对象，请检查是否安装了 MS XML Parser 运行库");
 xmlDoc->loadXML((_bstr_t)strXML);
 return xmlDoc;
}

 

MSXML::IXMLDOMDocumentPtr CXMLObject::CLoad(CString strPath)
{
 MSXML::IXMLDOMDocumentPtr xmlDoc;
 HRESULT hr = xmlDoc.CreateInstance(MSXML::CLSID_DOMDocument);
 if(FAILED(hr))
  throw("无法创建DOMDocument对象，请检查是否安装了 MS XML Parser 运行库");
 
 _bstr_t bstrFileName;
 bstrFileName = strPath.AllocSysString();
 variant_t vResult;
 vResult = xmlDoc->load(bstrFileName);

 

 return xmlDoc;
}

 

bool CXMLObject::CSave(MSXML::IXMLDOMDocumentPtr xmlDoc,CString strPath)
{
 HRESULT hr = xmlDoc->save((_bstr_t)strPath);
 if(FAILED(hr))
  return false;
 else
  return true;
}

 

MSXML::IXMLDOMElementPtr CXMLObject::AppendNode(MSXML::IXMLDOMDocumentPtr xmlDoc,
             MSXML::IXMLDOMElementPtr xmlNode,
             CString nodeName)
{
 return AppendNode(xmlDoc,xmlNode,nodeName,"");
}

 

MSXML::IXMLDOMElementPtr CXMLObject::AppendNode(MSXML::IXMLDOMDocumentPtr xmlDoc,
             MSXML::IXMLDOMElementPtr xmlNode,
             CString nodeName, CString nodeValue)
{
 MSXML::IXMLDOMElementPtr childNode;
 xmlDoc->raw_createElement((_bstr_t)(char*)(_bstr_t)nodeName,&childNode);
 childNode->Puttext((_bstr_t)nodeValue);
 xmlNode->appendChild(childNode);
 return childNode;
}

 

MSXML::IXMLDOMElementPtr CXMLObject::AppendAttr(MSXML::IXMLDOMDocumentPtr xmlDoc,
             MSXML::IXMLDOMElementPtr xmlNode,
             CString attrName, CString attrValue)
{
 xmlNode->setAttribute((_bstr_t)attrName,(_bstr_t)attrValue);
 xmlDoc->raw_appendChild(xmlNode,NULL);
 return xmlNode;
}

 

MSXML::IXMLDOMElementPtr CXMLObject::GetDocElement(MSXML::IXMLDOMDocumentPtr xmlDoc)
{
 MSXML::IXMLDOMElementPtr xmlRoot =NULL;
 xmlDoc->get_documentElement(&xmlRoot);
 return xmlRoot;
}

 

CString CXMLObject::GetAttrValue(MSXML::IXMLDOMElementPtr xmlNode,CString attrName)
{
  CString strTemp;
  MSXML::IXMLDOMNamedNodeMapPtr pAttrs = NULL;
     xmlNode->get_attributes(&pAttrs);
     if (pAttrs==NULL)  //此处没有属性值会报错
          return "";
 
     MSXML::IXMLDOMNodePtr pRequestTypeAttr=pAttrs->getQualifiedItem((_bstr_t)attrName,"");
     _bstr_t strRequestType=pRequestTypeAttr->Gettext();
     strTemp = strRequestType.operator char *();
  return strTemp;
}