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Java-Xsl Transform

How to transform xml with xsl

The java class

import java.io.*;

import org.w3c.dom.*;

import org.xml.sax.*;

import javax.xml.parsers.*;

import javax.xml.transform.*;

import javax.xml.transform.dom.*;

import javax.xml.transform.stream.*;

public class BasicXsl {

        // This method applies the xslFilename to inFilename and writes

        // the output to outFilename.

        public static void xsl(String inFilename, String outFilename, String xslFilename) {

                try {

                        // Create transformer factory

                        TransformerFactory factory = TransformerFactory.newInstance();

                        // Use the factory to create a template containing the xsl file

                        Templates template = factory.newTemplates(new StreamSource(new FileInputStream(xslFilename)));

                        // Use the template to create a transformer

                        Transformer xformer = template.newTransformer();

                        // Prepare the input and output files

                        Source source = new StreamSource(new FileInputStream(inFilename));

                        Result result = new StreamResult(new FileOutputStream(outFilename));

                        // Apply the xsl file to the source file and write the result to the output file

                        xformer.transform(source, result);

                } catch (FileNotFoundException e) {

                } catch (TransformerConfigurationException e) {

                        // An error occurred in the XSL file

                } catch (TransformerException e) {

                        // An error occurred while applying the XSL file

                        // Get location of error in input file

                        SourceLocator locator = e.getLocator();

                        int col = locator.getColumnNumber();

                        int line = locator.getLineNumber();

                        String publicId = locator.getPublicId();

                        String systemId = locator.getSystemId();

                }

        }

}

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The sample xml file

<?xml version="1.0" encoding="UTF-8"?>

<map>

        <entry key="key1" value="value1" />

        <entry key="key2" />

</map>

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The xsl stylesheet

<?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:template match="map">

                <HTML>

                <HEAD>

                <TITLE>Map</TITLE>

                </HEAD>

                <BODY>

                        <xsl:apply-templates/>

                </BODY>

                </HTML>

        </xsl:template>

        <xsl:template match="entry">

                <xsl:value-of select="@key"/>=<xsl:value-of select="@value"/>

                <xsl:text><br /></xsl:text>

        </xsl:template>

</xsl:stylesheet>

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The resulting output

<HTML>

<HEAD>

<META http-equiv="Content-Type" content="text/html; charset=UTF-8">

<TITLE>Map</TITLE>

</HEAD>

<BODY>

        key1=value1<br />

        key2=<br />

</BODY>

</HTML>