pb with http request

Tue, 30 Jul 2002 14:09:21 -0700

Hy, 
 
I just was trying to run the example wrotten by Steve Punk in "Getting started with Cocoon 2" http://www.xml.com/lpt/a/2002/07/10/cocoon2.html
 
More precisely, the last example that calculates a factorial from a numeric value submitted via HTTP POST.
 
Here's the sitemap:
 
<map:sitemap xmlns:map="http://apache.org/cocoon/sitemap/1.0">
  <map:components>
    <map:generators>
<map:generator name="request"        logger="sitemap.generator.request"        label="data"                 src="org.apache.cocoon.generation.RequestGenerator"/>
  </map:generators>
 
<map:transformers default="xslt">
<map:transformer name="xslt"            logger="sitemap.transformer.xslt"                   src="org.apache.cocoon.transformation.TraxTransformer"/>
</map:transformers>
 
<map:serializers>
  <map:serializer name="xml" mime-type="text/xml" src="org.apache.cocoon.serialization.XMLSerializer"/>
 
</map:serializers>
 
<map:matchers default="wildcard">
  <map:matcher name="wildcard" src="org.apache.cocoon.matching.WildcardURIMatcher"/>
</map:matchers>
 
</map:components>
 
<map:pipelines>
 
<map:pipeline>
    <map:match pattern="mypage">
    <map:generate type="request"/>
    <map:transform src="transforms/mystylesheet.xsl"/>
    <map:serialize type="xml"/>
   </map:match>
</map:pipeline>
 
</map:pipelines>
              
</map:sitemap>
 
 
and here's the file mystylesheet.xsl that I've copied in integrality from the original source:
 

<?xml version="1.0"?>

<!-- Author: Steven P. Punte "[EMAIL PROTECTED]" -->

<!-- Description: Computes Factorial -->

<xsl:stylesheet version="1.0"

xmlns:xsl="http://www.w3.org/1999/XSL/Transform"

xmlns:http="http://xml.apache.org/cocoon/requestgenerator/2.0">

<xsl:template match="/">

<page>

<incoming-value>

<xsl:value-of select="/http:request/http:requestParameters/

http:parameter/http:value"/>

</incoming-value>

<computed-factorial>

<xsl:call-template name="factorial">

<xsl:with-param name="input" select="/http:request/

http:requestParameters/http:parameter/http:value"/>

</xsl:call-template>

</computed-factorial>

</page>

</xsl:template>

<xsl:template name="factorial">

<xsl:param name="input"/>

<xsl:choose>

<xsl:when test="$input > 1">

<xsl:variable name="tmp">

<xsl:call-template name="factorial">

<xsl:with-param name="input" select="$input - 1" />

</xsl:call-template>

</xsl:variable>

<xsl:value-of select="$tmp * $input"/>

</xsl:when>

<xsl:otherwise>

1

</xsl:otherwise>

</xsl:choose>

</xsl:template>

</xsl:stylesheet>

 

When I run this by pointing my browser to http://localhost/mypage?input=5

I receive the following error message:

description org.apache.cocoon.ProcessingException: Exception in creating Transform Handler: org.xml.sax.SAXParseException: The XML declaration may only appear at the very beginning of the document.

I don't understand why this occurs. Can you help me please?

Thanks in advance,

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