Why won't Firefox parse this XSLT?_问答_开发者

开发者 https://www.devze.com 2023-01-24 14:12 出处：网络

I\'ve recently been playing around with XML formatting and XLST files, because it seems like the most direct solution to a UI problem I\'ve been wrestling with involving users accessing the central da

I've recently been playing around with XML formatting and XLST files, because it seems like the most direct solution to a UI problem I've been wrestling with involving users accessing the central data differently. In my experimentation I've created a really nice formatting sheet that looks great... in Internet Explorer. When I test it in Firefox, I consistently get the same error message:

"Error loading stylesheet: Parsing an XSLT stylesheet failed."

I've tried paring the stylesheet down to a very basic document and still experience the same problem. I've been checkin开发者_C百科g tutorials and other webforums and mimic'ing examples, but I can't seem to find anything that is explicitly applicable.

Here's my test XML file:

<?xml version="1.0" encoding="utf-8"?>
<?xml-stylesheet type="text/xsl" href="fox.xslt"?>
<article>
   <title>Making Excellent Pasta Sauce</title>
   <synopsis>A simple recipe for an amazing sauce, with tips on getting that extra flavor.</synopsis>
   <content>Here is my content.</content>
   <tags>
      <tag>sauce</tag>
      <tag>recipes</tag>
   </tags>
</article>

And then, here's my XSLT file (named, as you might tell from the example block above, "fox.xslt".

<?xml version="1.0" ?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/TR/WD-xsl">
<xsl:template match="/">
<html>
   <head>
   </head>
   <body>
   <xsl:for-each select="article">
      TITLE: <xsl:value-of select="title"/> <BR/>
      SYNOPSIS: <xsl:value-of select="synopsis"/> <BR/><BR/>
   </xsl:for-each>
</body>
</html>
</xsl:template>
</xsl:stylesheet>

I suspect that it may have something to do with <xsl:stylesheet xmlns:xsl="http://www.w3.org/TR/WD-xsl"> because I've seen a few different things done with this in examples, I've tried a few of the different values here and haven't seem to hit on one that works with this example.

I'm sure it's probably a basic problem, I just have been flummoxed at tracking down. Hopefully someone can lead me to the "forehead smacking moment".

Thanks in advance!

Try to replace your stylesheet element with this:

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">

You may also want to add this:

xmlns="http://www.w3.org/1999/xhtml"

I find it most useful to use a separate tool to find the problems that FireFox (et al) will not report. Install and use, say, the xsltproc command, which gives much more helpful results.

For example, I encountered a file where Firefox's only response was (take your pick): "Parsing an XSLT stylesheet failed" or, with version=1.1 in the stylesheet, " the equally useless "Parsing an XSLT expression failed."

So, I went to the command-line and entered, say ..."xsltproc bah.xsl humbug.xml" then, presto, there it was:

error
xsltCompileStepPattern : ']' expected
compilation error: file bah.xsl line 157 element template
xsltCompilePattern : failed to compile 'ATOM[@STATE='GAS''

I therefore routinely run all of my XML and XSL files through xsltproc or its equivalent such that they "run clean" before feeding it to my friendly neighborhood browser. I have not yet found any browser that "graciously and informatively" handles an XSLT issue.

In addition, I find it quite-frankly easier to look at the command output (which is HTML), say by piping it to the less or more commands for pagination, than to try looking at it in a browser, until I know that I am very close to what I am looking for. If I'm trying to find a problem in the generated (say) HTML output, I really don't want to look at it "as HTML" at first. If the XSL transforms are "spewing nonsense" (as, of course, they do at first, at least for me), a browser's attempts to turn it into something beautiful just gets in the way of finding the bugs in the stylesheet.