xercesc库中文保存XML功能实现

一参考链接

二运行结果

三代码

一参考链接

DOM Programming Guide (apache.org)

Xerces-c DOM XML文件的构造_xerces-c domimplementation-CSDN博客

Xerces-c库的使用-CSDN博客

二运行结果

三代码

#if 1//参考链接： https://blog.csdn.net/RGBMarco/article/details/81300814
#include <xercesc/util/PlatformUtils.hpp>
#include <xercesc/dom/DOM.hpp>#include <xercesc/framework/LocalFileFormatTarget.hpp>#include <xercesc/dom/DOMImplementationRegistry.hpp>
#include <xercesc/dom/DOMImplementationLS.hpp>
#include <xercesc/dom/DOMLSSerializer.hpp>
#include <xercesc/util/PlatformUtils.hpp>
#include <xercesc/util/XMLString.hpp>#include <xercesc/dom/DOMLSSerializerFilter.hpp>#include <xercesc/dom/DOMError.hpp>
#include <xercesc/dom/DOMErrorHandler.hpp>#include <xercesc/framework/XMLFormatter.hpp>
#include <xercesc/util/PlatformUtils.hpp>
#include <xercesc/util/XMLString.hpp>#include <fstream>
#include <iostream>#define Transcode_1(x)  XMLString::transcode(x)
#define Transcode_3(x,y,z) XMLString::transcode(x,y,z)using namespace xercesc;class MyDOMLSSerializerFilter : public xercesc::DOMLSSerializerFilter {
public:// ConstructorMyDOMLSSerializerFilter() {}// Destructorvirtual ~MyDOMLSSerializerFilter() {}// 实现所有纯虚函数/*** Tells the DOMLSSerializer what types of nodes to show to the filter.* See <code>DOMNodeFilter</code> for definition of the constants.* The constant SHOW_ATTRIBUTE is meaningless here, attribute nodes will* never be passed to a DOMLSSerializerFilter.** @return The constants of what types of nodes to show.* @since DOM Level 3*/ShowType getWhatToShow() const {return 0;};// -----------------------------------------------------------------------//  Virtual DOMLSSerializerFilter interface// -----------------------------------------------------------------------/** @name Functions introduced in DOM Level 3 *///@{/*** Interface from <code>DOMNodeFilter</code>,* to be implemented by implementation (derived class)*/FilterAction acceptNode(const DOMNode* node) const {std::cout << "acceptNode: " << std::endl;return FilterAction::FILTER_ACCEPT;};
};class MyDOMErrorHandler : public xercesc::DOMErrorHandler {
public:// ConstructorMyDOMErrorHandler() {}// Destructorvirtual ~MyDOMErrorHandler() {}// Handles a warning received from the parserbool handleWarning(const xercesc::DOMError& domError) {// Here you can implement your own logic to handle warnings// For now, we just print the message and return truestd::cout << "Warning: " << xercesc::XMLString::transcode(domError.getMessage()) << std::endl;return true;}// Handles an error received from the parserbool handleError(const xercesc::DOMError& domError) {// Here you can implement your own logic to handle errors// For now, we just print the message and return falsestd::cout << "Error: " << xercesc::XMLString::transcode(domError.getMessage()) << std::endl;return false;}// Handles a fatal error received from the parserbool handleFatalError(const xercesc::DOMError& domError) {// Here you can implement your own logic to handle fatal errors// For now, we just print the message and return falsestd::cout << "Fatal Error: " << xercesc::XMLString::transcode(domError.getMessage()) << std::endl;return false;}// Resets the error handlervoid resetErrors() {// Here you can implement your own logic to reset errors if needed}
};class StdOutFormatTarget : public xercesc::XMLFormatTarget {
public:// -----------------------------------------------------------------------//  Virtual interface// -----------------------------------------------------------------------void writeChars(const XMLByte* const      toWrite, const XMLSize_t           count, XMLFormatter* const formatter) {};void flush() {};
};int main()
{try{//XMLPlatformUtils::Initialize();//en_USXMLPlatformUtils::Initialize("zh_CN");}catch (const XMLException& toCatch){std::cerr << Transcode_1(toCatch.getMessage());}try{//DOMImplementation* imp = DOMImplementationRegistry::getDOMImplementation(Transcode_1("Core"));DOMImplementation* imp = DOMImplementationRegistry::getDOMImplementation(L"LS");DOMLSOutput* output = dynamic_cast<DOMImplementationLS*>(imp)->createLSOutput();DOMLSSerializer* serial = dynamic_cast<DOMImplementationLS*>(imp)->createLSSerializer();output->setEncoding(L"UTF-8");DOMLSSerializerFilter* filter = new MyDOMLSSerializerFilter();serial->setFilter(filter);// optionally you can implement your DOMErrorHandler (e.g. MyDOMErrorHandler)// and set it to the serializerDOMErrorHandler* errHandler = new MyDOMErrorHandler();serial->getDomConfig()->setParameter(XMLUni::fgDOMErrorHandler, errHandler);// StdOutFormatTarget prints the resultant XML stream// to stdout once it receives any thing from the serializer.XMLFormatTarget* myFormTarget = new StdOutFormatTarget();const wchar_t* str = L"a中文.xml";XMLFormatTarget* target = new LocalFileFormatTarget(str);output->setByteStream(target);// set user specified end of line sequence and output encodingserial->setNewLine(L"\r");// set serializer features serial->getDomConfig()->setParameter(XERCES_CPP_NAMESPACE_QUALIFIER XMLUni::fgDOMWRTSplitCdataSections, false);serial->getDomConfig()->setParameter(XERCES_CPP_NAMESPACE_QUALIFIER XMLUni::fgDOMWRTSplitCdataSections, false);serial->getDomConfig()->setParameter(XERCES_CPP_NAMESPACE_QUALIFIER XMLUni::fgDOMWRTDiscardDefaultContent, false);serial->getDomConfig()->setParameter(XERCES_CPP_NAMESPACE_QUALIFIER XMLUni::fgDOMWRTFormatPrettyPrint, true);//换行serial->getDomConfig()->setParameter(XERCES_CPP_NAMESPACE_QUALIFIER XMLUni::fgDOMWRTBOM, false);DOMDocument* doc = imp->createDocument(0, Transcode_1("root"), 0);const wchar_t* strNode1 = L"node1中文";DOMElement* node = doc->createElement(L"node1");node->setAttribute(Transcode_1("name"), L"node1");node->setTextContent(strNode1);DOMElement* root = doc->getDocumentElement();root->appendChild(node);DOMElement* node2 = doc->createElement(Transcode_1("node2"));node2->setAttribute(Transcode_1("name"), Transcode_1("node2"));node2->setTextContent(Transcode_1("node2"));root->appendChild(node2);DOMElement* node2_1 = doc->createElement(Transcode_1("node2_1"));node2_1->setAttribute(Transcode_1("name"), Transcode_1("node2_1"));node2_1->setTextContent(Transcode_1("node2_1"));node2->appendChild(node2_1);DOMElement* node2_2 = doc->createElement(Transcode_1("node2_2"));node2_2->setAttribute(Transcode_1("name"), Transcode_1("node2_2"));node2_2->setTextContent(Transcode_1("node2_2"));node2->appendChild(node2_2);if (doc){doc->setXmlStandalone(true);serial->write(doc, output);doc->release();serial->release();delete target;}}catch (const DOMException& toCatch){std::cerr << Transcode_1(toCatch.getMessage());}return 0;
}#endif#if 0
//https://blog.csdn.net/RGBMarco/article/details/81253563#include <iostream>
#include <xercesc/dom/DOM.hpp>
#include <xercesc/util/PlatformUtils.hpp>
#include <xercesc/parsers/XercesDOMParser.hpp>
#include <xercesc/sax/SAXException.hpp>
#include <xercesc/sax/HandlerBase.hpp>
#include <string>
#include <vector>using namespace std;
using namespace xercesc;#define STUDENTS_TAG  "Students"
#define STUDENT_TAG   "Student"
#define NAME_TAG      "Name"
#define AGE_TAG       "Age"
#define SEX_TAG       "Sex"struct Student {string  Name;int     Age;string  Sex;
};enum ErrorCode
{LACK_BEGIN = 1,     // 缺少<Students>标记LACK_NAME = 2,     // 缺少姓名LACK_AGE = 3,     // 缺少年龄LACK_SEX = 4      // 缺少性别
};DOMElement* findStudentsTag(DOMElement* root)
{if (root == 0)return 0;if (XMLString::compareString(XMLString::transcode(root->getTagName()), STUDENTS_TAG) == 0)return root;elsereturn findStudentsTag(root->getNextElementSibling());
}int visitDom2GetStudents(DOMElement* root, vector<Student>& students)
{DOMElement* stustag = findStudentsTag(root);if (stustag == 0)return LACK_BEGIN;DOMNodeList* stulist = root->getElementsByTagName(XMLString::transcode(STUDENT_TAG));size_t length = stulist->getLength();for (size_t index = 0; index < length; ++index){DOMElement* elems = dynamic_cast<DOMElement*>(stulist->item(index));DOMElement* name = elems->getFirstElementChild();Student stu;if (name == 0)return LACK_NAME;if (XMLString::compareString(XMLString::transcode(name->getTagName()), NAME_TAG) == 0){DOMNode* n = dynamic_cast<DOMNode*>(name);stu.Name = static_cast<string>(XMLString::transcode(n->getTextContent()));}elsereturn LACK_NAME;DOMElement* age = name->getNextElementSibling();if (age == 0)return LACK_AGE;if (XMLString::compareString(XMLString::transcode(age->getTagName()), AGE_TAG) == 0){DOMNode* n = dynamic_cast<DOMNode*>(age);stu.Age = atoi(XMLString::transcode(n->getTextContent()));}elsereturn LACK_AGE;DOMElement* sex = age->getNextElementSibling();if (sex == 0){return LACK_SEX;}if (XMLString::compareString(XMLString::transcode(sex->getTagName()), SEX_TAG) == 0){DOMNode* n = dynamic_cast<DOMNode*>(sex);stu.Sex = static_cast<string>(XMLString::transcode(n->getTextContent()));}elsereturn LACK_SEX;students.emplace_back(stu);}return 0;
}int main()
{try{XMLPlatformUtils::Initialize();}catch (const XMLException& toCatch){std::cerr << XMLString::transcode(toCatch.getMessage());return -1;}XercesDOMParser* parser = new XercesDOMParser();ErrorHandler* errHandler = new HandlerBase();parser->setErrorHandler(errHandler);try{parser->parse("test.xml");}catch (const XMLException& toCatch){std::cerr << XMLString::transcode(toCatch.getMessage());return -1;}catch (const DOMException& toCatch){std::cerr << XMLString::transcode(toCatch.getMessage());return -1;}catch (const SAXException& toCatch){std::cerr << XMLString::transcode(toCatch.getMessage());return -1;}DOMDocument* doc = parser->getDocument();DOMElement* root = doc->getDocumentElement();vector<Student> students;int ret = visitDom2GetStudents(root, students);if (ret != 0)std::cerr << "Parse error\n";else{for (auto stu : students){std::cout << "Name: " << stu.Name << "\n"<< " Age: " << stu.Age << "\n"<< " Sex: " << stu.Sex << "\n";}}doc->release();XMLPlatformUtils::Terminate();return 0;
}
#endif