Xerces-C++学习之——创建XML文档

代码如下：
/*
* ===========================================================================
*
* Filename: CreateXML.cpp
*
* Description: This is an example of the use of Xerces-C++ operation XML.
*
* Version: 1.0
* Created: 02/28/2010 11:48:26 AM
* Revision: none
* Compiler: gcc
*
* Author: huabo (caodaijun), [email protected]
* Company: feinno
*
* ===========================================================================
*/
#include <xercesc/util/PlatformUtils.hpp>
#include <xercesc/util/XMLString.hpp>
#include <xercesc/dom/DOM.hpp>
#include <xercesc/util/OutOfMemoryException.hpp>
#include <xercesc/framework/MemBufFormatTarget.hpp>
#include <xercesc/framework/StdOutFormatTarget.hpp>
#include <xercesc/framework/MemBufInputSource.hpp>
#include <xercesc/parsers/XercesDOMParser.hpp>

#include <string>

#if defined(XERCES_NEW_IOSTREAMS)
#include <iostream>
#else
#include <iostream.h>
#endif

XERCES_CPP_NAMESPACE_USE
class XStr
{
public:
XStr(const char* const toTranscode)
{
fUnicodeForm = XMLString::transcode(toTranscode);
}
~XStr()
{
XMLString::release(&fUnicodeForm);
}
const XMLCh* unicodeForm() const
{
return fUnicodeForm;
}
private:
XMLCh* fUnicodeForm;
};

#define X(str) XStr(str).unicodeForm()

std::string basic_string =
"<basic>"
"<corp_name>abcd</corp_name>"
"<corp_code></corp_code>"
"<c0></c0>"
"<short_name></short_name>"
"<calling_code></calling_code>"
"<legal_representative></legal_representative>"
"<address></address>"
"<zip></zip>"
"<telephone></telephone>"
"<fax></fax>"
"<contact></contact>"
"<proportion_code></proportion_code>"
"<logo_crc></logo_crc>"
"<employee_portrait_crc></employee_portrait_crc>"
"<group_portrait_crc></group_portrait_crc>"
"<createtime></createtime>"
"<opentime></opentime>"
"<province_code></province_code>"
"<vgop_code></vgop_code>"
"<org_version></org_version>"
"<source_code></source_code>"
"<client_dept_version></client_dept_version>"
"<version_id></version_id>"
"<contact_mp></contact_mp>"
"</basic>";

std::string rules_string =
"<rules>"
"<order_flag></order_flag>"
"<demo_flag></demo_flag>"
"<useroperate_limit></useroperate_limit>"
"<emp_portrait_flag></emp_portrait_flag>"
"<iplmt></iplmt>"
"<dept_auth_switch></dept_auth_switch>"
"<sms_block></sms_block>"
"<sms_begin></sms_begin>"
"<sms_end></sms_end>"
"<edit_status></edit_status>"
"<expire_time></expire_time>"
"</rules>";

std::string accounts_string =
"<accounts>"
"<scale_code></scale_code>"
"<customer_manager></customer_manager>"
"<manager_phone></manager_phone>"
"<deposit_bank></deposit_bank>"
"<bank_accounts></bank_accounts>"
"<password_paper_id></password_paper_id>"
"<group_code></group_code>"
"<sms_code></sms_code>"
"<meeting_code></meeting_code>"
"<fee_code></fee_code>"
"<cycle_code></cycle_code>"
"<sharedisk_code></sharedisk_code>"
"<sp_status></sp_status>"
"<updatetime></updatetime>"
"</accounts>";

int main(int argC, char*argV[])
{
// Initialize the XML4C2 system.
try
{
XMLPlatformUtils::Initialize();
}
catch(const XMLException& toCatch)
{
char *pMsg = XMLString::transcode(toCatch.getMessage());
XERCES_STD_QUALIFIER cerr << "Error during Xerces-c Initialization.\n"
<< " Exception message:"
<< pMsg;
XMLString::release(&pMsg);
return 1;
}

DOMImplementation* impl = DOMImplementationRegistry::getDOMImplementation(X("LS"));
DOMLSSerializer* theSerializer = ((DOMImplementationLS*)impl)->createLSSerializer();
DOMLSOutput *theOutputDesc = ((DOMImplementationLS*)impl)->createLSOutput();
MemBufFormatTarget* target = new MemBufFormatTarget();
theOutputDesc->setByteStream(target);

if (impl != NULL)
{
try
{
DOMDocument* doc = impl->createDocument(
0, // root element namespace URI.
X("corporation"), // root element name
0); // document type object (DTD).
doc->setXmlStandalone(true);

DOMElement* rootElem = doc->getDocumentElement();
rootElem->setAttribute(X("xmlns"), X("com:cmcc:corporation"));
rootElem->setAttribute(X("xmlns:xsi"), X("http://www.w3.org/2001/XMLSchema-instance"));
rootElem->setAttribute(X("xsi:schemaLocation"), X("com:cmcc:corporation corporation.xsd"));

//add node
DOMElement* prodElem = doc->createElement(X("eid"));
rootElem->appendChild(prodElem);

DOMText* prodDataVal = doc->createTextNode(X("100000"));
prodElem->appendChild(prodDataVal);

XercesDOMParser* parser = new XercesDOMParser();

//add basic child
MemBufInputSource* basic_mem = new MemBufInputSource(
(const XMLByte* )basic_string.c_str(),
strlen(basic_string.c_str()),
"basic",
false);
parser->parse( *basic_mem );
DOMDocument* xmlDoc = parser->getDocument();
DOMElement* basic_root = xmlDoc->getDocumentElement();
DOMNode* newnode = doc->importNode((DOMNode* )basic_root, true);
rootElem->appendChild(newnode);
delete basic_mem;

//add the rules child
MemBufInputSource* rules_mem = new MemBufInputSource(
(const XMLByte* )rules_string.c_str(),
rules_string.length(),
"rules",
false);
parser->parse( *rules_mem );
xmlDoc = parser->getDocument();
DOMElement* rules_root = xmlDoc->getDocumentElement();
newnode = doc->importNode((DOMNode* )rules_root, true);
rootElem->appendChild(newnode);
delete rules_mem;

//add the accounts child
MemBufInputSource* accounts_mem = new MemBufInputSource(
(const XMLByte* )accounts_string.c_str(),
accounts_string.length(),
"accounts",
false);
parser->parse( *accounts_mem );
xmlDoc = parser->getDocument();
DOMElement* accounts_root = xmlDoc->getDocumentElement();
newnode = doc->importNode((DOMNode* )accounts_root, true);
rootElem->appendChild(newnode);
delete accounts_mem;

theSerializer->write(doc, theOutputDesc);
std::cout<< target->getRawBuffer()<< std::endl;

delete target;
delete parser;
theOutputDesc->release();
theSerializer->release();
doc->release();
}
catch(const OutOfMemoryException&)
{
XERCES_STD_QUALIFIER cerr << "OutOfMemoryException" << XERCES_STD_QUALIFIER endl;
}
catch (const DOMException& e)
{
XERCES_STD_QUALIFIER cerr << "DOMException code is: " << e.code << XERCES_STD_QUALIFIER endl;
}
catch (...)
{
XERCES_STD_QUALIFIER cerr << "An error occurred creating the document" << XERCES_STD_QUALIFIER endl;
}
}
else
{
XERCES_STD_QUALIFIER cerr << "Requested implementation is not supported" << XERCES_STD_QUALIFIER endl;
}

XMLPlatformUtils::Terminate();
return 0;
}

转自： http://blog.chinaunix.net/uid-17240700-id-2813917.html

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