JSTL - XML <x:param> Tag
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The <x:param> tag is used along with the transform tag to set a parameter in the XSLT stylesheet
Attribute
The <x:param> tag has the following attributes −
Attribute | Description | Required | Default |
---|---|---|---|
name | Name of the XSLT parameter to set | Yes | Body |
Value | Value of the XSLT parameter to set | No | None |
Example
Consider the following XSLT stylesheet style.xsl. Note the usage of <xsl:param...> tag and a variable {$bgColor} −
<?xml version = "1.0"?> <xsl:stylesheet xmlns:xsl = "https://www.w3.org/1999/XSL/Transform" version = "1.0"> <xsl:output method = "html" indent = "yes"/> <xsl:param name = "bgColor"/> <xsl:template match = "/"> <html> <body> <xsl:apply-templates/> </body> </html> </xsl:template> <xsl:template match = "books"> <table border = "1" width = "50%" bgColor = "{$bgColor}"> <xsl:for-each select = "book"> <tr> <td><i><xsl:value-of select = "name"/></i></td> <td><xsl:value-of select = "author"/></td> <td><xsl:value-of select = "price"/></td> </tr> </xsl:for-each> </table> </xsl:template> </xsl:stylesheet>
Consider the following JSP file where we define the value of bgColor using the <x:param> tag inside the <x:transform> tag −
<%@ taglib prefix = "c" uri = "https://java.sun.com/jsp/jstl/core" %> <%@ taglib prefix = "x" uri = "https://java.sun.com/jsp/jstl/xml" %> <html> <head> <title>JSTL x:transform Tags</title> </head> <body> <h3>Books Info:</h3> <c:set var = "xmltext"> <books> <book> <name>Padam History</name> <author>ZARA</author> <price>100</price> </book> <book> <name>Great Mistry</name> <author>NUHA</author> <price>2000</price> </book> </books> </c:set> <c:import url = "https://localhost:8080/style.xsl" var = "xslt"/> <x:transform xml = "${xmltext}" xslt = "${xslt}"> <x:param name = "bgColor" value = "grey"/> </x:transform> </body> </html>
You will receive the following result −
Books Info:
Padam History | ZARA | 100 |
Great Mistry | NUHA | 2000 |
jsp_standard_tag_library.htm
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