JSTL XML <x:param> Tag

The <x:param> tag is used to set the parameter in the XSLT style sheet. It use along with the transform tag for sending parameter along with the value.

The syntax used for including the < x:param > tag is:

Let's see the simple example to understand the xml < x:param > tag:

Let us put the following program in transfer.xsl file:

<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output method="html" indent="yes"/>
<xsl:param name="bgColor"/>

<xsl:template match="/">
  <html>
  <body>
   <xsl:apply-templates/>
  </body>
  </html>
</xsl:template>

<xsl:template match="books">
  <table border="1" width="60%" bgColor="{$bgColor}">
    <xsl:for-each select="book">
      <tr>
        <td>
          <b><xsl:value-of select="name"/></b>
        </td>
        <td>
          <xsl:value-of select="author"/>
        </td>
        <td>
          <xsl:value-of select="price"/>
        </td>
      </tr>
    </xsl:for-each>
  </table>
</xsl:template>
</xsl:stylesheet>

Now put the following program in index.jsp , keeping in the same directory:

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="x" uri="http://java.sun.com/jsp/jstl/xml" %>

<html>
<head>
  <title>x:transform Tag</title>
</head>
<body>
<h3>Novels Information:</h3>
<c:set var="xmltext">
 <books>
<book>
  <name>Three mistakes of my life</name>
  <author>Chetan Bhagat</author>
  <price>200</price>
</book>
<book>
  <name>Tomorrow land</name>
  <author>Brad Bird</author>
  <price>1000</price>
</book>
<book>
  <name>Wings of fire</name>
  <author>Dr. APJ Abdul Kalam</author>
  <price>500</price>
</book>
</books>
</c:set>

<c:import url="transfer.xsl" var="xslt"/>
<x:transform xml="${xmltext}" xslt="${xslt}">
   <x:param name="bgColor" value="yellow"/>
</x:transform>

</body>
</html>

Output: