在使用XSLT转换XML时保存实体引用?-PreservingentityreferenceswhentransformingXMLwithXSLT?

4  

If you know what entities will be used and how they are defined, you can do the following (quite primitive and error-prone, but still better than nothing):

如果您知道将使用什么实体以及如何定义它们，您可以执行以下操作(非常原始且容易出错，但仍然比什么都不做要好):

 

 
  
 

 

 

 
  
   
  
 

 
  
 ]>
]]>
  

  
 

 
  
 

 
  
  
  
  

  
 

when applied on the provided XML document:

当应用于提供的XML文档时:

 ]>

    Hello &so;!
    &question;

the wanted result is produced:

所需结果如下:

 ]>

  
      Hello &so;!
      &question;

Do note:

注意:

1. The special (RegEx) characters in the replacements must be escaped.

   必须转义替换中的特殊字符(RegEx)。

2. We needed to resolve to DOE, which isn't recommended, because it violates the principles of the XSLT architecture and processing model -- in other words this solution is a nasty hack.

   我们需要解析DOE，这是不推荐的，因为它违反了XSLT体系结构和处理模型的原则——换句话说，这个解决方案是一个令人讨厌的黑客。

3  

This can be an especially troublesome issue if you are using something like S1000D. It uses entities and @boardno attributes to link to figures. It's a throwback to its SGML roots.

如果您使用的是S1000D之类的东西，这可能是一个特别麻烦的问题。它使用实体和@boardno属性链接图。这是对SGML根源的回归。

Because this automatic entity expanding behavior, which is correct but undesireable, I often have to drop back to tools like sed, awk and batch scripts to manage certain data analysis tasks when using S1000D as input.

由于这种自动的实体扩展行为是正确的，但是不受欢迎，所以在使用S1000D作为输入时，我经常不得不使用sed、awk和批处理脚本等工具来管理某些数据分析任务。

IMHO, this would be a great change proposal to one of the upcoming XSLT specifications that a compliant processor accept a runtime parameter that can turn on and off entitiy expansions.

IMHO，这将是对即将发布的XSLT规范的一个重大修改，该规范要求兼容的处理器接受运行时参数，该参数可以打开和关闭实体扩展。

1  

If you use a Java implementation of an XSLT 2.0 processor (like Saxon 9 Java) you might want to check whether http://andrewjwelch.com/lexev/ helps out, you can preprocess your XML with entity and character references that way to get them marked up as XML elements you can then transform as necessary.

如果您使用XSLT 2.0处理器的Java实现(如Saxon 9 Java)，您可能想检查http://andrewjwelch.com/lexev/是否有帮助，您可以使用实体和字符引用对XML进行预处理，以便将它们标记为XML元素，然后您可以根据需要进行转换。

1  

I use this solution and it works well :

我用这个方法，效果很好:

0  

You can keep EntityReference nodes in the document by using a DOM LS parser with "entities" parameter set to true. http://docs.oracle.com/javase/6/docs/api/org/w3c/dom/DOMConfiguration.html

您可以通过使用“entity”参数设置为true的DOM LS解析器来保持文档中的EntityReference节点。http://docs.oracle.com/javase/6/docs/api/org/w3c/dom/DOMConfiguration.html

The specification says the default value is true but depending on the parser, it could be false, be aware of that.

规范说默认值是true，但是根据解析器的不同，它可能是false，请注意这一点。

To load Xerces :

加载Xerces:

DOMImplementationLS domImpl = new org.apache.xerces.dom.CoreDOMImplementationImpl();

You can use registry as below too but personnaly, I would rather hardcode the implementation I want as above:

你也可以使用注册表如下，但就个人而言，我宁愿硬编码实现我想要的如上:

DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
DOMImplementationLS domImpl = (DOMImplementationLS) registry.getDOMImplementation("XML 3.0 LS 3.0"); 

Then, to load your document :

然后，加载您的文档:

// XML parser with XSD schema 
LSParser parser = domImpl.createLSParser(DOMImplementationLS.MODE_SYNCHRONOUS, "http://www.w3.org/2001/XMLSchema");
DOMConfiguration cOnfig= parser.getDomConfig();
config.setParameter("entities", true);
LSInput input = impl.createLSInput();
Document lDoc = parser.parse(your XML stream);

Then, your XML entities are not expanded in the DOM.

然后，XML实体不会在DOM中展开。

Then, because SAXON does not handle entities not expanded ('Unsupported node type in DOM! 5' error), you can not use net.sf.saxon.xpath.XPathFactoryImpl, you have to set the default XPathFactory of Xerces with XPathFactory.newInstance()

然后，因为SAXON不会处理未展开的实体(“DOM中不支持的节点类型!”5’error)，不能使用net.sf.saxon.xpath。XPathFactoryImpl，您必须使用XPathFactory. newinstance()设置Xerces的默认XPathFactory。