xercesc

myfile.xml
<level1>
    <level2>
        <name>abc</name>
    </level2>
    <level2>
        <name>xyz</name>
    </level2>
</level1>



#include  < xercesc / util / PlatformUtils.hpp >
#include  < xercesc / framework / XMLFormatter.hpp >
#include  < xercesc / util / XMLString.hpp >
#include  < xercesc / util / XMLUniDefs.hpp >
#include  < xercesc / framework / MemBufInputSource.hpp >
#include  < xercesc / framework / LocalFileInputSource.hpp >
#include  < xercesc / parsers / XercesDOMParser.hpp >
#include  < xercesc / dom / DOMNode.hpp >
#include  < xercesc / dom / DOMNodeList.hpp >
#include  < stdio.h >
#include  < iostream >
#include  < vector >
#include  < string >

using   namespace  XERCES_CPP_NAMESPACE;
using   namespace  std;

int  main()
{
     /*  initialise xerces  */
     try
    {
        XMLPlatformUtils::Initialize ();
    }
     catch  ( const  XMLException  &  toCatch)
    {
         char   * pMsg  =  XMLString::transcode (toCatch.getMessage ());
        printf ( " Error during Xerces-c Initialization.\n "
                 "    Exception message: %s " , pMsg);
        delete[] pMsg;
         return   - 1 ;
    }

     /*  parse a XML file  */
    XercesDOMParser  * m_DOMParser  =   new  XercesDOMParser();
    m_DOMParser -> setValidationScheme(XercesDOMParser::Val_Always);
//     ErrorHandler *m_ERRHandler = (ErrorHandler*)new HandlerBase();
//     m_DOMParser->setErrorHandler(m_ERRHandler);
     try
    {
        m_DOMParser -> parse( " myfile.xml " );
    }
     catch ( const  XMLException &  toCatch) 
    {
         return   - 1 ;
    }

    XMLCh temp[ 257 ];
    DOMNode  * root  =  m_DOMParser -> getDocument();  //  取得了整个树的根节点
    DOMNodeList *  childList  =  root -> getChildNodes();  //  获取所有子节点
     for  ( int  j  =   0 ; j  <  childList -> getLength();  ++ j)
    {
        XMLString::transcode( " level1 " , temp,  256 );  //  内部使用UTF-16编码，所以需要转换

         if  (childList -> item(j) -> getNodeType()  ==  DOMNode::ELEMENT_NODE
             &&  XMLString::compareString(childList -> item(j) -> getNodeName(), temp)  ==   0 )
        {
             char   * tn  =  XMLString::transcode(childList -> item(j) -> getNodeName());
            std::cout  <<  tn  <<  std::endl;

            DOMNode  * subRoot  =  childList -> item(j);
            DOMNodeList  * subChildList  =  subRoot -> getChildNodes();
             for  ( int  k  =   0 ; k  <  subChildList -> getLength();  ++ k)
            {
                XMLString::transcode( " level2 " , temp,  256 );  //  内部使用UTF-16编码，所以需要转换

                 if  (subChildList -> item(k) -> getNodeType()  ==  DOMNode::ELEMENT_NODE
                     &&  XMLString::compareString(subChildList -> item(k) -> getNodeName(), temp)  ==   0 )
                {
                     char   * tn  =  XMLString::transcode(subChildList -> item(k) -> getNodeName());
                    std::cout  <<   " \t "   <<  tn  <<  std::endl;

                    DOMNode  * ssubRoot  =  subChildList -> item(k);
                    DOMNodeList  * ssubChildList  =  ssubRoot -> getChildNodes();
                     for  ( int  m  =   0 ; m  <  ssubChildList -> getLength();  ++ m)
                    {
                        XMLString::transcode( " name " , temp,  256 );  //  内部使用UTF-16编码，所以需要转换

                         if  (ssubChildList -> item(m) -> getNodeType()  ==  DOMNode::ELEMENT_NODE
                             &&  XMLString::compareString(ssubChildList -> item(m) -> getNodeName(), temp)  ==   0 )
                        {
                             char   * tn  =  XMLString::transcode(ssubChildList -> item(m) -> getNodeName());
                             char   * tv  =  XMLString::transcode(ssubChildList -> item(m) -> getFirstChild() -> getNodeValue()); // 每个ELEMENT的第一子节点为TEXT_NODE
                            std::cout  <<   " \t\t "   <<  tn  <<   " : "   <<  tv  <<  std::endl;  //  tv=="abc",
                            XMLString::release( & tn);
                            XMLString::release( & tv);
                        }
                    }
                }
            }
        }
    }

    XMLPlatformUtils::Terminate();

     return   0 ;
}

g++ -g -O2 -msse2 -o DOMPrint src/DOMPrint/DOMPrint.o src/DOMPrint/DOMPrintErrorHandler.o src/DOMPrint/DOMPrintFilter.o src/DOMPrint/DOMTreeErrorReporter.o ../src/.libs/libxerces-c.so -lnsl -lpthread


参考：
1，http://panpan.blog.51cto.com/489034/187272
2，http://blog.csdn.net/wangpeng110m/archive/2009/05/14/4181668.aspx


遇到的错误：
1，xml文件本身有问题，结束标签忘记写“/“。