AJAX/XSL: Using POST parameters in XSLT

I'm sending POST parameters to an XSLT stylesheet via AJAX.

AJAX snippet:

//param name/value is nodeid=1
xhttp.open("POST",dname,false);
xhttp.setRequestHeader("Content-type", "te开发者_如何学Cxt/plain");
xhttp.setRequestHeader("Content-length", params.length);
xhttp.setRequestHeader("Connection", "close");
xhttp.send(params);

XSL snippet

<xsl:param name="nodeid" /> 
<xsl:template match="/">
    Hi <xsl:value-of select="$nodeid" />
</xsl:template>

"Hi" is coming back in the response, but not the nodeid. This seems pretty straightforward, so what am I missing? I've tried it running locally as well as on JRun/Coldfusion. Thoughts?

Use a processor specific API to get the nodeid parameter before processing. Either in PHP:

$transformer  = new XSLTProcessor();
$transformer->importStylesheet("foo.xsl");
$transformer->setParameter('', 'nameOfPage', $_POST['nameOfPage']);

or Coldfusion:

<cffile action="read" file="C:\CFusion\wwwroot\testdocs\simpletransform.xsl" 
variable="xslDoc"> 

<cfset mystruct={nameOfPage=request.nameOfPage}>
<cfset transformedXML = XmlTransform(mydoc, xslDoc, mystruct)> 

<cffile action="write" file="C:\CFusion\wwwroot\testdocs\transformeddoc.xml" 
output=transformedXML>

or VBScript:

nameOfString = WScript.Stdin.ReadAll

or Awk:

BEGIN { FS = "=" } ; { print $2 | xargs xsltproc foo.xsl foo.xml --param nameOfPage }

References

• PI Parameters
• Setting Parameters for XSLTProcessor
• Saxon: Calling .Net
• Xalan: setParameter
• XSLTProc Man Page
• How to Write CGI Applications in Visual Basic
• Microsoft Windows 2000 Scripting Guide - Handling Input and Output
• Batch XSLT Transformation, find | xarg xsltproc
• Coldfusion: XmlTransform