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The <x:choose> works like a Java switch statement in that it lets you choose between a number of alternatives. Where the switch statement has case statements, the <x:choose> tag has <x:when> tags. A a switch statement has default clause to specify a default action and similar way <x:choose> has <x:otherwise> as default clause.
The <x:choose> tag does not have any attribute.
The <x:when> tag has one attributes which is listed below.
The <x:otherwise> tag does not have any attribute.
The <x:when> tag has following attributes:
Attribute | Description | Required | Default |
---|---|---|---|
select | Condition to evaluate | Yes | None |
<%@ 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>JSTL x:choose 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> <x:parse xml="${xmltext}" var="output"/> <x:choose> <x:when select="$output//book/author = 'ZARA'"> Book is written by ZARA </x:when> <x:when select="$output//book/author = 'NUHA'"> Book is written by NUHA </x:when> <x:otherwise> Unknown author. </x:otherwise> </x:choose> </body> </html> |
This would produce following result:
Books Info:Book is written by ZARA |
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