利用Xerces-c库解析XML

如下是一个XML文件：sample.xml<?xml version="1.0" encoding="utf-8"?><常用XML解析库>    <库1>Xerces-C</库1>    <库2>libxml2</库2>    <库3>expat</库3>    <库4>tinyxml</库4>    <库5>msxml</库5></常用XML解析库>如下是解析此文件的源代码：#include <windows.h>#include <xercesc/dom/DOM.hpp>#include <xercesc/dom/DOMDocument.hpp>#include <xercesc/dom/DOMDocumentType.hpp>#include <xercesc/dom/DOMElement.hpp>#include <xercesc/dom/DOMImplementation.hpp>#include <xercesc/dom/DOMImplementationLS.hpp>#include <xercesc/dom/DOMNodeIterator.hpp>#include <xercesc/dom/DOMNodeList.hpp>#include <xercesc/dom/DOMText.hpp>#include <xercesc/parsers/XercesDOMParser.hpp>#include <xercesc/util/XMLUni.hpp>#include <iostream>using namespace std;#ifdef _DEBUG#pragma comment( lib, "xerces-c_2d.lib" )#else#pragma comment( lib, "xerces-c_2.lib" )#endifclass CXMLNodeContent{private:    char* m_pNodeText;    int m_BufferSize;    int m_CurBufferSize;public:    CXMLNodeContent()    {        m_pNodeText = NULL;        m_BufferSize = 0;        m_CurBufferSize = 0;    }    ~CXMLNodeContent()    {        if( m_pNodeText != NULL )        {            delete []m_pNodeText;            m_pNodeText = NULL;        }        m_BufferSize = 0;        m_CurBufferSize = 0;    }    int printNodeContent( const XMLCh* pText )    {        getNodeContent( pText );        if( m_CurBufferSize == 1 )            return 0;        else        {            printf( "%s", m_pNodeText );            return 1;        }    }    int getBufferSize()    {        return m_CurBufferSize;    }    char* getNodeContent( const XMLCh* pText )    {        if( pText == NULL )        {            m_CurBufferSize = 0;            return NULL;        }        int index = 0;        m_CurBufferSize = WideCharToMultiByte(CP_ACP, 0 ,pText, -1 ,            0 , 0, NULL, NULL);        if( pText[0] == 10 )        {            while( pText[index] == 10 || pText[index] == 32 && index < m_CurBufferSize )                index++;            if( index == m_CurBufferSize )            {                m_CurBufferSize = 0;                return NULL;            }        }        if( m_CurBufferSize > m_BufferSize )        {            if( m_pNodeText == NULL )            {                m_pNodeText = new char[m_CurBufferSize];                m_BufferSize = m_CurBufferSize;            }            else            {                delete []m_pNodeText;                m_pNodeText = new char[m_CurBufferSize];                m_BufferSize = m_CurBufferSize;            }        }        WideCharToMultiByte(CP_ACP, 0 ,pText + index, -1 ,            m_pNodeText , m_CurBufferSize, NULL, NULL);        return m_pNodeText;    }};int main(){    CXMLNodeContent nodeProxy;    xercesc::XMLPlatformUtils::Initialize();    xercesc::XercesDOMParser* myParser = new xercesc::XercesDOMParser;    myParser->setValidationScheme( xercesc::XercesDOMParser::Val_Auto );    myParser->setDoNamespaces( false );    myParser->setDoSchema( false );    myParser->setLoadExternalDTD( false );    myParser->parse( "sample.xml" );    xercesc::DOMDocument* xmlDoc = myParser->getDocument();    xercesc::DOMElement* elementRoot = xmlDoc->getDocumentElement();    if( elementRoot == NULL )    {        xercesc::XMLPlatformUtils::Terminate();        cout << "空文档或文档格式错误!" << endl;        return 0;    }    nodeProxy.printNodeContent( elementRoot->getNodeName() );    cout<<endl;    xercesc::DOMNodeList* children = elementRoot->getChildNodes();    XMLSize_t nodeCount = children->getLength();    for( XMLSize_t xx = 0; xx < nodeCount; xx++ )    {        xercesc::DOMNode* currentNode = children->item(xx);        if( currentNode->getNodeType() && currentNode->getNodeType() == xercesc::DOMNode::ELEMENT_NODE )        {            xercesc::DOMElement* currentElement =                (xercesc::DOMElement*)(currentNode);            cout<<"\t";            nodeProxy.printNodeContent( currentElement->getTagName() );            cout<<"\t";            nodeProxy.printNodeContent(currentNode->getTextContent());            cout<<endl;        }    }    cout<<"\n解析完毕"<<endl;    xercesc::XMLPlatformUtils::Terminate();    getchar();    return 0;}