how to put single quote in the content of a node or an attriubte?

[ywj]

Hi,     Here is an problem about the character entity. We know the following characters must be replaced with their character entities when existing in the content of a node:     &    -- &amp;     '    -- &apos;     >    -- &gt;     <    -- &lt;     "    -- &quot;       Then I use the these entities in the xslt. they all work well except the single quote when the xslt file is used to transform xml files. Whenever I use &apos; or &#39; or "'", the transforming thread throw exception with the message as follows: javax.xml.transform.TransformerException: misquoted literal... expected single quote!  .........       My xslt file is as follows: <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"> <xsl:template match= "/" > <xsl:value-of select="&apos;" /> </xsl:template> </xsl:stylesheet>       the version of xalan is xalan-j_2_2_D14.     So who know the reason? and how can I add single quote into the content of a node?     Thank you!       regards!   Yang Wenjun