xerces-c++修改节点属性值

#include <syslog.h> #include <xercesc/dom/DOM.hpp> #include <xercesc/parsers/XercesDOMParser.hpp> #include <xercesc/framework/LocalFileFormatTarget.hpp> using namespace xercesc; class XMLReader {     public:         XMLReader(): m_configFileParser(NULL), m_rootNode(NULL) { };         ~XMLReader();         bool Initialize()         {             try             {                 XMLPlatformUtils::Initialize();             }             catch( XMLException &e )             {                 char *message = XMLString::transcode( e.getMessage() );                 syslog(LOG_ERR, "XML toolkit initialization error: %s", message);                 XMLString::release( &message );                 return false;             }             m_rootNode          = XMLString::transcode("beans");             m_configFileParser = new XercesDOMParser;             return true;         };         void readConfigFile(const char *);     private:         xercesc::XercesDOMParser *m_configFileParser;         XMLCh* m_rootNode; }; XMLReader::~XMLReader() {     try     {         delete m_configFileParser;         m_configFileParser = NULL;         XMLString::release( &m_rootNode );     }     catch( ... )     {         syslog(LOG_ERR, "Unknown exception encountered in TagNamesdtor");     }     try     {         XMLPlatformUtils::Terminate();     }     catch( xercesc::XMLException& e )     {         char *message = xercesc::XMLString::transcode( e.getMessage() );         syslog(LOG_ERR, "XML ttolkit teardown error: %s" , message);         XMLString::release( &message );     } } void XMLReader::readConfigFile(const char *configFile) {     m_configFileParser->setValidationScheme( XercesDOMParser::Val_Never );     m_configFileParser->setDoNamespaces( false );     m_configFileParser->setDoSchema( false );     m_configFileParser->setLoadExternalDTD( false );     try     {         m_configFileParser->parse( configFile );         DOMDocument* xmlDoc = m_configFileParser->getDocument();         DOMElement* elementRoot = xmlDoc->getDocumentElement();         if( !elementRoot )         {             syslog(LOG_ERR, "empty document!");         };                  XMLCh *sslContextTag = XMLString::transcode("sslContext");         //DOMNodeList *elementRoot = xmlDoc->getElementsByTagName(sslContextTag);         DOMNodeList *children = xmlDoc->getElementsByTagName(sslContextTag); //elementRoot->getChildNodes();         const  XMLSize_t nodeCount = children->getLength();         XMLCh *keyStore      = XMLString::transcode("keyStore");         XMLCh *keyStoreTag   = XMLString::transcode("keyStorePassword");         XMLCh *trustStoreTag = XMLString::transcode("trustStorePassword");         for( XMLSize_t xx = 0; xx < nodeCount; ++xx )         {             DOMNode* currentNode = children->item(xx);             if( currentNode->getNodeType() == DOMNode::ELEMENT_NODE )             {                 DOMElement* currentElement = dynamic_cast< xercesc::DOMElement* >( currentNode );                 if( XMLString::equals(currentElement->getTagName(), sslContextTag) && currentElement->hasAttribute(keyStore))                 {                     XMLCh *xmlch_pass = XMLString::transcode("password");                     currentElement->setAttribute(keyStoreTag  , xmlch_pass);                     currentElement->setAttribute(trustStoreTag, xmlch_pass);                     XMLString::release(&xmlch_pass);                     break;                 }             }         }         XMLString::release( &sslContextTag );         XMLString::release( &keyStore );         XMLString::release( &keyStoreTag );         XMLString::release( &trustStoreTag );         const XMLCh gLS[] = { chLatin_L, chLatin_S, chNull };         DOMImplementation* impl = DOMImplementationRegistry::getDOMImplementation(gLS);         DOMWriter* theSerializer = ((DOMImplementationLS*)impl)->createDOMWriter();          if (theSerializer->canSetFeature(XMLUni::fgDOMXMLDeclaration,true) )         {             theSerializer->setFeature(XMLUni::fgDOMXMLDeclaration, true);         }         const char *outputXMLName = "test.xml";         XMLFormatTarget *localFormTarget = new LocalFileFormatTarget(outputXMLName);         try{             theSerializer->writeNode(localFormTarget, *xmlDoc);         }         catch(...){             syslog(LOG_ERR,"error");         }         delete localFormTarget;     }     catch( xercesc::XMLException& e )     {         char* message = xercesc::XMLString::transcode( e.getMessage() );         syslog(LOG_ERR, "Error parsing file: %s" , message);         XMLString::release( &message );     } } #ifdef MAIN_TEST /* This main is provided for unit test of the class. */ int main() {     const char *configFile ="activemq.xml";     XMLReader appConfig;     appConfig.Initialize();     appConfig.readConfigFile(configFile);     return 0; } #endif