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xsl中的if条件语句

发布时间：2015-03-18 00:11:34编辑：雪饮阅读（）

 下面是我们的xml文档代码：

<?xml version="1.0" encoding="ISO-8859-1"?>

<!-- Edited with XML Spy v2007 (http://www.altova.com) -->

<?xml-stylesheet type="text/xsl" href="cdcatalog_if.xsl"?>

<catalog>

<cd>

<title>Empire Burlesque</title>

<artist>Bob Dylan</artist>

<country>USA</country>

<company>Columbia</company>

<price>10.90</price>

<year>1985</year>

</cd>

<cd>

<title>Hide your heart</title>

<artist>Bonnie Tyler</artist>

<country>UK</country>

<company>CBS Records</company>

<price>9.90</price>

<year>1988</year>

</cd>

<cd>

<title>Greatest Hits</title>

<artist>Dolly Parton</artist>

<country>USA</country>

<company>RCA</company>

<price>9.90</price>

<year>1982</year>

</cd>

<cd>

<title>Still got the blues</title>

<artist>Gary Moore</artist>

<country>UK</country>

<company>Virgin records</company>

<price>10.20</price>

<year>1990</year>

</cd>

<cd>

<title>Eros</title>

<artist>Eros Ramazzotti</artist>

<country>EU</country>

<company>BMG</company>

<price>9.90</price>

<year>1997</year>

</cd>

<cd>

<title>One night only</title>

<artist>Bee Gees</artist>

<country>UK</country>

<company>Polydor</company>

<price>10.90</price>

<year>1998</year>

</cd>

<cd>

<title>Sylvias Mother</title>

<artist>Dr.Hook</artist>

<country>UK</country>

<company>CBS</company>

<price>8.10</price>

<year>1973</year>

</cd>

<cd>

<title>Maggie May</title>

<artist>Rod Stewart</artist>

<country>UK</country>

<company>Pickwick</company>

<price>8.50</price>

<year>1990</year>

</cd>

<cd>

<title>Romanza</title>

<artist>Andrea Bocelli</artist>

<country>EU</country>

<company>Polydor</company>

<price>10.80</price>

<year>1996</year>

</cd>

<cd>

<title>When a man loves a woman</title>

<artist>Percy Sledge</artist>

<country>USA</country>

<company>Atlantic</company>

<price>8.70</price>

<year>1987</year>

</cd>

<cd>

<title>Black angel</title>

<artist>Savage Rose</artist>

<country>EU</country>

<company>Mega</company>

<price>10.90</price>

<year>1995</year>

</cd>

<cd>

<title>1999 Grammy Nominees</title>

<artist>Many</artist>

<country>USA</country>

<company>Grammy</company>

<price>10.20</price>

<year>1999</year>

</cd>

<cd>

<title>For the good times</title>

<artist>Kenny Rogers</artist>

<country>UK</country>

<company>Mucik Master</company>

<price>8.70</price>

<year>1995</year>

</cd>

<cd>

<title>Big Willie style</title>

<artist>Will Smith</artist>

<country>USA</country>

<company>Columbia</company>

<price>9.90</price>

<year>1997</year>

</cd>

<cd>

<title>Tupelo Honey</title>

<artist>Van Morrison</artist>

<country>UK</country>

<company>Polydor</company>

<price>8.20</price>

<year>1971</year>

</cd>

<cd>

<title>Soulsville</title>

<artist>Jorn Hoel</artist>

<country>Norway</country>

<company>WEA</company>

<price>7.90</price>

<year>1996</year>

</cd>

<cd>

<title>The very best of</title>

<artist>Cat Stevens</artist>

<country>UK</country>

<company>Island</company>

<price>8.90</price>

<year>1990</year>

</cd>

<cd>

<title>Stop</title>

<artist>Sam Brown</artist>

<country>UK</country>

<company>A and M</company>

<price>8.90</price>

<year>1988</year>

</cd>

<cd>

<title>Bridge of Spies</title>

<artist>T`Pau</artist>

<country>UK</country>

<company>Siren</company>

<price>7.90</price>

<year>1987</year>

</cd>

<cd>

<title>Private Dancer</title>

<artist>Tina Turner</artist>

<country>UK</country>

<company>Capitol</company>

<price>8.90</price>

<year>1983</year>

</cd>

<cd>

<title>Midt om natten</title>

<artist>Kim Larsen</artist>

<country>EU</country>

<company>Medley</company>

<price>7.80</price>

<year>1983</year>

</cd>

<cd>

<title>Pavarotti Gala Concert</title>

<artist>Luciano Pavarotti</artist>

<country>UK</country>

<company>DECCA</company>

<price>9.90</price>

<year>1991</year>

</cd>

<cd>

<title>The dock of the bay</title>

<artist>Otis Redding</artist>

<country>USA</country>

<company>Atlantic</company>

<price>7.90</price>

<year>1987</year>

</cd>

<cd>

<title>Picture book</title>

<artist>Simply Red</artist>

<country>EU</country>

<company>Elektra</company>

<price>7.20</price>

<year>1985</year>

</cd>

<cd>

<title>Red</title>

<artist>The Communards</artist>

<country>UK</country>

<company>London</company>

<price>7.80</price>

<year>1987</year>

</cd>

<cd>

<title>Unchain my heart</title>

<artist>Joe Cocker</artist>

<country>USA</country>

<company>EMI</company>

<price>8.20</price>

<year>1987</year>

</cd>

</catalog>

下面是我们的xsl样式表代码：
<?xml version="1.0" encoding="ISO-8859-1"?>
<!-- Edited with XML Spy v2007 (http://www.altova.com) -->
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
  <html>
  <body>
    <h2>My CD Collection</h2>
    <table border="1">
      <tr bgcolor="#9acd32">
      <th>Title</th>
      <th>Artist</th>
      <th>price</th>
    </tr>
    <xsl:for-each select="catalog/cd">
    <xsl:if test="price&lt;10">
      <tr>
        <td><xsl:value-of select="title"/></td>
        <td><xsl:value-of select="artist"/></td>
        <td><xsl:value-of select="price"/></td>
   </tr>
    </xsl:if>
    </xsl:for-each>
    </table>
  </body>
  </html>
</xsl:template>
</xsl:stylesheet>
从xsl中的这段代码可以看出：我们只调用了价格小于10的cd  
<xsl:if test="price&lt;10">
      <tr>
        <td><xsl:value-of select="title"/></td>
        <td><xsl:value-of select="artist"/></td>
        <td><xsl:value-of select="price"/></td>
    </tr>
</xsl:if>
效果图预览：