使用xsl输出纯文本 [英] use xsl to output plain text

问题描述

我需要使用XSL来从XML生成简单的纯文本输出。由于我没有在网上找到任何好的，简明的例子，我决定在这里发布我的解决方案。任何链接引用一个更好的例子当然会赞赏：

 <？xml version =1.0encoding =UTF -8\" >？; 
  < xsl：template match =/> 
 < / xsl：text>< / xsl：for-each> 
< / xsl：template> 
< / xsl：stylesheet> 
  

一些重要的事情帮助我在这里：

1. 使用xsl：output在输出文档的开始部分省略标准声明
   
2. 使用xml：space =preserve 属性来保留我在xsl：for-each标签中写的任何空格。这也要求我在for-each标签内写入所有的代码，包括标签以及单行（除了换行符）。


3. 用来插入换行符 - 再次，我不得不在这里省略标准的xml缩进。
   
   
   

   这个xslt的结果和期望的输出是：
   
   

   at -f alluser 23:58 17.4.2010
   
   at -f ggroup67 7:58 28.4.2010
   
   at -f ggroup70 15:58 18.4.2010
   
   at -f alluser 23:58 18.4.2010
   
   at -f ggroup61 7:58 22.9.2010
   
   at -f ggroup60 23:58 21.9.2010
   
   at -f alluser 3:58 22.9.2010
   
   

   
   
   

   正如我所说，任何建议如何做到这一点更优雅，将不胜感激。

   
   
   

   ---

   
   
   

   后续2011-05-08：
   
   

   以下是我正在处理的xml类型：
   
   

    < script xmlns：xsi =http://www.w3.org/2001/XMLSchema-instancexsi：noNamespaceSchemaLocation =script.xsd> 
   <命令> 
   < username> alluser< / username> 
    < startDate> 17.4.2010< / startDate> 
   < / command> 
   < / script> 
     

   
   

   解决方案

   
   
   • 匹配脚本/命令，并消除 xsl：for-each
   
   
   • concat（）可以用来缩短表达式并且避免显式插入这么多的< xsl：text> 和< xsl：value-of> 元素
   
   
   • 使用实体引用& ;＃xA; 用于回车，而不是依靠保留< xsl：text> 元素之间的换行符更安全，因为代码格式不会混淆你的换行符。此外，对我来说，它读作为一个明确的换行符，并更容易理解的目的。
     
     
     $ hr
     
     

      <？xml version =1.0encoding =UTF-8？> 
       xmlns：fo =http：// www。 w3.org/1999/XSL/Format> 
       
     < xsl：template match =script / command> 
      ，username 
     ，''
     ，startTime / @ hours 
     '： '
     ，startTime / @分钟
     ，''
     ，startDate 
     ，'& #xA;'）/> 
     < / xsl：template> 
      
     < / xsl：stylesheet> 
       

     
     

     I needed to use XSL to generate simple plain text output from XML. Since I didn't find any good, concise example online, I decided to post my solution here. Any links referring to a better example would of course be appreciated:

     <?xml version="1.0" encoding="UTF-8"?>
     <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:fo="http://www.w3.org/1999/XSL/Format" >
         <xsl:output method="text" omit-xml-declaration="yes" indent="no"/>
         <xsl:template match="/">
             <xsl:for-each select="script/command" xml:space="preserve">at -f <xsl:value-of select="username"/> <xsl:value-of select="startTime/@hours"/>:<xsl:value-of select="startTime/@minutes"/> <xsl:value-of select="startDate"/><xsl:text>
     </xsl:text></xsl:for-each> 
         </xsl:template>
     </xsl:stylesheet>
     

     A few important things that helped me out here:

     1. the use of xsl:output to omit the standard declaration at the beginning of the output document
     2. the use of the xml:space="preserve" attribute to preserve any whitespace I wrote within the xsl:for-each tag. This also required me to write all code within the for-each tag, including that tag as well, on a single line (with the exception of the line break).
     3. the use of to insert a line break - again I had to omit standard xml indenting here.

     The resulting and desired output for this xslt was:

     at -f alluser 23:58 17.4.2010
     at -f ggroup67 7:58 28.4.2010
     at -f ggroup70 15:58 18.4.2010
     at -f alluser 23:58 18.4.2010
     at -f ggroup61 7:58 22.9.2010
     at -f ggroup60 23:58 21.9.2010
     at -f alluser 3:58 22.9.2010
     

     As I said, any suggestions of how to do this more elegantly would be appreciated.

     ---

     FOLLOW-UP 2011-05-08:

     Here's the type of xml I am treating:

     <script xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="script.xsd">
         <command>
             <username>alluser</username>
             <startTime minutes="58" hours="23"/>
             <startDate>17.4.2010</startDate>
         </command>
     </script>
     

     解决方案

     • You can define a template to match on script/command and eliminate the xsl:for-each
     • concat() can be used to shorten the expression and save you from explicitly inserting so many <xsl:text> and <xsl:value-of> elements.
     • The use of an entity reference 
 for the carriage return, rather than relying on preserving the line-break between your <xsl:text> element is a bit more safe, since code formatting won't mess up your line breaks. Also, for me, it reads as an explicit line-break and is easier to understand the intent.

     ---

     <?xml version="1.0" encoding="UTF-8"?>
     <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 
     xmlns:fo="http://www.w3.org/1999/XSL/Format" >
         <xsl:output method="text" omit-xml-declaration="yes" indent="no"/>
     
         <xsl:template match="script/command">
             <xsl:value-of select="concat('at -f '
                         ,username
                         ,' '
                         ,startTime/@hours
                         ,':'
                         ,startTime/@minutes
                         ,' '
                         ,startDate
                         ,'&#xA;')"/>
         </xsl:template>
     
     </xsl:stylesheet>
     

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