Basic JSP Tutorials
Advanced JSP Tutorials
JSP Useful References
JSP Useful Resources
Selected Reading
© 2011 TutorialsPoint.COM
|
JSTL XML <x:choose> Tag
JSTL XML <x:when> Tag
JSTL XML <x:otherwise> Tag
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.
Attribute:
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 |
Example:
<%@ 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
|
|
|
|