如何使用Qt5.4 QXmlStreamWriter抑制命名空间前缀

Question

我有一个dictionary.xml：

<?xml version="1.0" encoding="UTF-8"?>
<DictionarySet xmlns:mc="urn:fmosoft-map-creator" xmlns="urn:fmosoft-map-creator" Version="1">
    <Dictionary SourceLanguage="en_US" SourceLanguageIsPredefined="true" TargetLanguage="es" TargetLanguageIsPredefined="true">
        <Translation Source="asdf" Target="fdsa"/>
        <Translation Source="xyz" Target="jkl"/>
    </Dictionary>
    <Dictionary SourceLanguage="en_US" SourceLanguageIsPredefined="true" TargetLanguage="pt" TargetLanguageIsPredefined="true">
        <Translation Source="asdf" Target="wer"/>
        <Translation Source="xyz" Target="poi"/>
    </Dictionary>
</DictionarySet>

我希望使用QXmlStreamReader和QXmlStreamWriter复制文件，以便在整个复制过程中插入新元素。下面是我的代码，可以简单地复制该文件(一旦工作正常，我将在循环中插入代码，以便在此过程中添加其他元素)：

  QXmlStreamWriter writer(&output);
  if (!output.open(QIODevice::WriteOnly | QIODevice::Text)) {
    throw std::runtime_error("Unable to open the file for writing.");
  }

  writer.setAutoFormatting(true);
  writer.writeDefaultNamespace("urn:fmosoft-map-creator");

  while (!reader.atEnd()) {
    writer.writeCurrentToken(reader);
    reader.readNext();
  }

这就产生了：

<?xml version="1.0" encoding="UTF-8"?>
<mc:DictionarySet xmlns="urn:fmosoft-map-creator" xmlns:mc="urn:fmosoft-map-creator" Version="1">
    <mc:Dictionary SourceLanguage="en_US" SourceLanguageIsPredefined="true" TargetLanguage="es" TargetLanguageIsPredefined="true">
        <mc:Translation Source="asdf" Target="fdsa"/>
        <mc:Translation Source="xyz" Target="jkl"/>
    </mc:Dictionary>
    <mc:Dictionary SourceLanguage="en_US" SourceLanguageIsPredefined="true" TargetLanguage="pt" TargetLanguageIsPredefined="true">
        <mc:Translation Source="asdf" Target="wer"/>
        <mc:Translation Source="xyz" Target="poi"/>
    </mc:Dictionary>
</mc:DictionarySet>

DictionarySet元素的xmlns属性是相反的，但我认为这并不重要。更大的问题是，我可以让QXmlStreamWriter在每个元素名之前不使用前缀"mc:“吗？

Answer 1

QXmlStreamReader::setNamespaceProcessing()是答案：

  reader.setNamespaceProcessing(false);