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Java Cookbook
book

Java Cookbook

by Ian F. Darwin
June 2001
Intermediate to advanced content levelIntermediate to advanced
888 pages
21h 1m
English
O'Reilly Media, Inc.
Content preview from Java Cookbook

Transforming XML with XSLT

Problem

You need to make significant changes to the output format.

Solution

Use XSLT; it is fairly easy to use and does not require writing much Java.

Discussion

XSLT, or Extensible Style Language for Transformations, allows you a great deal of control over the output format. It can be used to change an XML file from one DTD into another, as might be needed in a business-to-business (B2B) application where information is passed from one industry-standard DTD to a site that uses another. It can also be used to render XML into another format such as HTML. Think of XSLT as a scripting language for transforming XML.

You need a set of classes called an XSLT processor . One freely available XSLT processor is the Apache project’s Xalan (formerly available from Lotus/IBM as the Lotus XSL processor). To use this, you create an XSL processor by calling the factory method getProcessor( ) , then call its parse method passing in two XSLTInputSources (one for the XML document and one for the XSL stylesheet) and one XSLTResultTarget for the output file.

Assume you have a file of people’s names, addresses, and so on, stored in an XML document such as the file people.xml, shown in Example 21-1.

Example 21-1. people.xml

<?xml version="1.0"?>
<people>
<person>
    <name>Ian Darwin</name>
    <email>ian@darwinsys.com</email>
    <country>Canada</country>
</person>
<person>
    <name>Another Darwin</name>
    <email type="intranet">ad</email>
    <country>Canada</country>
</person>
</people>

You ...

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Publisher Resources

ISBN: 0596001703Supplemental ContentCatalog PageErrata