Xerces XMLString :: transcode null/empty答复 [英] Xerces XMLString::transcode null/empty reply

问题描述

Xerces转码返回一个空字符串.我认为这与语言环境问题有关，但我遇到了麻烦.

Xerces transcode is returning an empty string. I think it is related to locale issues, but i'm stuck.

我有一个简单的程序:

#include <xercesc/util/PlatformUtils.hpp>
#include <xercesc/util/XMLString.hpp>
#include <xercesc/dom/DOM.hpp>
#include <xercesc/util/XMLString.hpp>
#include <xercesc/framework/MemBufInputSource.hpp>
#include <xercesc/dom/DOMException.hpp>
#include <string>
#include <stdio.h>

XERCES_CPP_NAMESPACE_USE
using namespace std;

int main(int argc, char* argv[])
{
 string a = "Não";
 try
 {
   XMLPlatformUtils::Initialize("pt_PT");
 } catch(const XMLException& e)
 {
   fprintf(stdout,"ERROR INITIALIZING\n");
 }
 XMLCh *auxCh3 = XMLString::transcode(a.c_str());
 fprintf(stdout,"### %s ###\n",XMLString::transcode(auxCh3));
 XMLString::release(&auxCh3);
 XMLPlatformUtils::Terminate();
 return 0;
}

结果是:

"### ###"

如果我删除了ã，结果就可以了:

If i remove the ã, the result is ok:

"###否###"

服务器的语言环境定义为:

The server's locale is defined to:

[]$ locale
LANG=pt_PT
LC_CTYPE="pt_PT"
LC_NUMERIC="pt_PT"

其中之一是可用的:

[]$ locale -a|grep pt_PT
pt_PT

感谢您的帮助.

推荐答案

程序启动时，默认情况下处于"C"语言环境.这是由POSIX标准定义的.您需要调用setlocale(LC_ALL,"")(不要忘记#include <locale.h>)，以根据系统环境变量设置语言环境.

When your program starts, by default it is in "C" locale. This is defined by POSIX standard. You need to call setlocale(LC_ALL,"") (don't forget to #include <locale.h> ) , to set the locale according to system environment variables.

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