This error,
The processing instruction target matching "[xX][mM][lL]" is not allowed
occurs whenever I run an XSLT page that begins as follows:
<?xml version="1.0" encoding="windows-1256"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:include href="../header.xsl"/>
<xsl:template match="/">
<xsl:call-template name="pstyle"/>
<xsl:call-template name="Validation"/>
<xsl:variable name="strLang">
<xsl:value-of select="//lang"/>
</xsl:variable>
<!-- ////////////// Page Title ///////////// -->
<title>
<xsl:value-of select="//ListStudentFinishedExam.Title"/>
</title>
Note: I removed any leading spaces before the first line, but the error still occurs!
ベストアンサー1
Xerces-based tools will emit the following error
The processing instruction target matching "[xX][mM][lL]" is not allowed.
when an XML declaration is encountered anywhere other than at the top of an XML file.
This is a valid diagnostic message; other XML parsers should issue a similar error message in this situation.
To correct the problem, check the following possibilities:
Some blank space or other visible content exists before the
<?xml ?>declaration.Resolution: remove blank space or any other visible content before the XML declaration.
Some invisible content exists before the
<?xml ?>declaration. Most commonly this is a Byte Order Mark (BOM).Resolution: Remove the BOM using techniques such as those suggested by the W3C page on the BOM in HTML.
A stray
<?xml ?>declaration exists within the XML content. This can happen when XML files are combined programmatically or via cut-and-paste. There can only be one<?xml ?>declaration in an XML file, and it can only be at the top.Resolution: Search for
<?xmlin a case-insensitive manner, and remove all but the top XML declaration from the file.