I use foreach loop <xsl:for-each select="catalog/cd[artist[@id='2']]"> to loop in cd. Then, I want to get title1 tag value <title1>Unchain my heart</title1> using title/title1 But , output nothing.
<?xml version="1.0" encoding="UTF-8"?>
<catalog>
<cd>
<title>Red</title>
<artist>The Communards</artist>
<country>UK</country>
<company>London</company>
<price>7.80</price>
<year>1987</year>
</cd>
<cd>
<title>
<title1>Unchain my heart</title1>
<title2>Unchain my heart 2</title2>
</title>
<artist id='2'>Joe Cocker</artist>
<country>USA</country>
<company>EMI</company>
<price>8.20</price>
<year>1987</year>
</cd>
</catalog>
format.xsl
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
<xsl:for-each select="catalog/cd[artist[@id='2']]">
<xsl:value-of select="title/title1"/>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>
>Solution :
Your stylesheet uses the (default) xml output method, but its output is not well-formed XML because it doesn’t have a root element; it just produces a document consisting of a single text node Unchain my heart. My guess is that’s what’s causing your problem.
I’ve changed your value-of into a copy-of:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
<xsl:for-each select="catalog/cd[artist[@id='2']]">
<xsl:copy-of select="title/title1"/>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>
Result:
<?xml version="1.0" encoding="UTF-8"?><title1>Unchain my heart</title1>
Alternatively, if you really do want your output to be a plain text file rather than an XML file, change your output method to text:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="text"/>
<xsl:template match="/">
<xsl:for-each select="catalog/cd[artist[@id='2']]">
<xsl:value-of select="title/title1"/>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>
Result:
Unchain my heart