使用XML解析（msxml4.dll）

 

c++代码示例

以下代码从csdn论坛摘抄。

 

#include "stdafx.h"

#include <windows.h>

#include <msxml2.h>

#import <msxml4.dll>

 

HANDLE logFile = NULL;

 

#define INDENT 4

 

#define TESTHR(hr) \

{ \

if(FAILED(hr)) goto fail; \

}

 

void PrintChild(IXMLDOMNodeList* nodeList, int level)

{

       if(nodeList == NULL)

              return;

 

       IXMLDOMNode* currentNode = NULL;

       IXMLDOMNodeList* childNodes = NULL;

       IXMLDOMNamedNodeMap* attributes = NULL;

       IXMLDOMNode* attributeID = NULL;

 

       while(!FAILED(nodeList->nextNode(&currentNode)) && currentNode != NULL)

       {

              BSTR nodeName;

              TESTHR(currentNode->get_nodeName(&nodeName));

              DWORD dwBytesWritten;

              for(int i=0; i<level*INDENT; i++)

                     WriteFile(logFile, L" ", (DWORD)(sizeof(WCHAR)), &dwBytesWritten, NULL);

 

              //WCHAR msg[MAX_SIZE];

              //wsprintf(msg, L"%s ", nodeName);

              WriteFile(logFile, nodeName, (DWORD)(wcslen(nodeName)*sizeof(WCHAR)), &dwBytesWritten, NULL);

 

              TESTHR(currentNode->get_attributes(&attributes));

              if(attributes!=NULL)

              {

                     _bstr_t bstrAttributeName = "id";

                     BSTR idVal;

                     TESTHR(attributes->getNamedItem(bstrAttributeName, &attributeID));

                     if(attributeID != NULL)

                     {

                            TESTHR(attributeID->get_text(&idVal));

                            WriteFile(logFile, L" ", (DWORD)(sizeof(WCHAR)), &dwBytesWritten, NULL);

                            WriteFile(logFile, idVal, (DWORD)(wcslen(idVal)*sizeof(WCHAR)), &dwBytesWritten, NULL);

                            WriteFile(logFile, L"\r\n", (DWORD)(2*sizeof(WCHAR)), &dwBytesWritten, NULL);

                            attributeID->Release(); attributeID = NULL;

                     }

                     else

                     {

                            WriteFile(logFile, L"\r\n", (DWORD)(2*sizeof(WCHAR)), &dwBytesWritten, NULL);

                     }

                     attributes->Release(); attributes = NULL;

 

              }

              else

              {

                     WriteFile(logFile, L"\r\n", (DWORD)(2*sizeof(WCHAR)), &dwBytesWritten, NULL);

              }

 

              TESTHR(currentNode->get_childNodes(&childNodes));

              PrintChild(childNodes, level+1);

              currentNode=NULL;

       }

 

fail:

       if(childNodes!=NULL)

              childNodes->Release();

       if(attributeID!=NULL)

              attributeID->Release();

       if(attributes!=NULL)

              attributes->Release();

       if(currentNode != NULL)

              currentNode->Release();

}

 

int _tmain(int argc, _TCHAR* argv[])

{

 

       IXMLDOMDocumentPtr xmlFile = NULL;

       IXMLDOMElement* xmlRoot = NULL;

       _variant_t varXml(L"C:\\demo1.xml");

 

       logFile = CreateFile(L"log.txt", GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);

       if(logFile == INVALID_HANDLE_VALUE)

              goto fail;

 

       TESTHR(CoInitialize(NULL));

 

       TESTHR(xmlFile.CreateInstance("Msxml2.DOMDocument.4.0"));

 

       VARIANT_BOOL varOut;

       TESTHR(xmlFile->load(varXml, &varOut));

 

       TESTHR(xmlFile->get_documentElement(&xmlRoot));

 

       BSTR rootName;

       DWORD dwBytesWritten;

       TESTHR(xmlRoot->get_nodeName(&rootName));

       WriteFile(logFile, rootName, (DWORD)(wcslen(rootName)*sizeof(WCHAR)), &dwBytesWritten, NULL);

       WriteFile(logFile, L"\r\n", (DWORD)(2*sizeof(WCHAR)), &dwBytesWritten, NULL);

 

       IXMLDOMNodeList* xmlChildNodes = NULL;

       TESTHR(xmlRoot->get_childNodes(&xmlChildNodes));

 

       PrintChild(xmlChildNodes, 2);

 

fail:

       if(logFile != INVALID_HANDLE_VALUE)

              CloseHandle(logFile);

       if(xmlChildNodes!=NULL)

              xmlChildNodes->Release();

       if(xmlRoot!=NULL)

              xmlRoot->Release();

       return 0;

}

 

 

安装部署

       将使用msxml4.dll的程序打包的时候，要在安装部署项目中添加合并模块msxm4sys32.msm，以下介绍添加步骤。

      添加安装和部署项目

       要将当前项目打包成安装程序的时候，可以用.net提供的安装程序制作。在当前项目中，打开菜单：文件à添加项目à新建项目，将弹出“添加新项目”对话框，在“项目类型”中选择“安装和部署项目”，“模板”选择“安装项目”，填写“名称”和“目录”，在解决方案资源管理器中就会生成一个安装部署项目。右击该安装项目，在弹出的菜单中选择“视图”à“文件系统”，在文件系统中可以添加任何想要包括在安装程序中的文件。

 

安装msxm4sys32.msm

如果在C:\Program Files\Common Files\Merge Modules已经有msxm4sys32.msm这个文件，就可以跳过这一步。

下载并安装msxml4msms.exe，msxml4msms.exe可以在以下地址中下载，该文件中包含了msxml4sxs32.msm 和 msxm4sys32.msm。

 

添加合并模块

右击安装项目，在弹出的菜单中选择“添加”à“合并模块”，在选择文件的对话框中选择“msxm4sys32.msm”。

参考资料