XML transform using XSLT In Java

XSLT is Extensible Style Sheet Transformation which is used to transform/convert a XML to another HTML/XML structure with the help of XSL document.

In this example, we are going to convert 1.xml to 2.xml structure with the help of XSL document., in Java.

Steps:

Load the input XML inside the DOM parser as document. Load the input XSL in a Stream.
Using the inbuilt DOM XML transformer in Java, transform the XML to another XML with the help of XSLT.

Input XML: (1.XML)


<?xml version="1.0" encoding="UTF-8"?>
<Org>
   <Emp>
     <Name>Developer</Name>
     <ID>6260</ID>
     <Location>India</Location>
   </Emp>
</Org>

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

<Org>

<Emp>

<Name>Developer</Name>

<Location>India</Location>

</Emp>

</Org>

XSLT Tranformation File (2.XSL)


<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
      xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">  
    <Employee>
        <xsl:value-of select="Org/Emp/Name"/>-
          Appended Value:
        <xsl:value-of select="concat(Org/Emp/Name,' ',Org/Emp/ID, ' ',Org/Emp/Location )"/>
    </Employee>
</xsl:template>
</xsl:stylesheet>

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

<xsl:stylesheet version="1.0"

xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

<xsl:template match="/">

<xsl:value-of select="Org/Emp/Name"/>-

Appended Value:

<xsl:value-of select="concat(Org/Emp/Name,' ',Org/Emp/ID, ' ',Org/Emp/Location )"/>

</Employee>

</xsl:template>

</xsl:stylesheet>

In the below Java Program, the above XML is transformed to the output XML., using the XSLT. XSLT provides the details such as where the values needs to be placed/ordered.

import java.io.File;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;

import org.w3c.dom.Document;

public class DomXSLParsing {
	public static void main(String args[]) throws Exception{
		new DomXSLParsing();
	}

	public DomXSLParsing() throws Exception {
		String inputXML = "1.xml";
		String inputXSL = "2.xsl";
		String outputXML = "3.xml";
		convertXMLusingXSL(inputXML, inputXSL, outputXML);
	}
	
	public void convertXMLusingXSL(String inputXML, String inputXSL, String outputXML) throws Exception {
		DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
		DocumentBuilder db = dbf.newDocumentBuilder();
		Document doc = db.parse(inputXML);
		doc.normalize();
		StreamSource xsl = new StreamSource(new File(inputXSL));
		
		TransformerFactory tf = TransformerFactory.newInstance();
		tf.newTransformer(xsl).transform(new DOMSource(doc), new StreamResult(new File(outputXML)));
	}
}

import java.io.File;

import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

import javax.xml.transform.TransformerFactory;

import javax.xml.transform.dom.DOMSource;

import javax.xml.transform.stream.StreamResult;

import javax.xml.transform.stream.StreamSource;

import org.w3c.dom.Document;

public class DomXSLParsing {

public static void main(String args[]) throws Exception{

new DomXSLParsing();

}

public DomXSLParsing() throws Exception {

String inputXML = "1.xml";

String inputXSL = "2.xsl";

String outputXML = "3.xml";

convertXMLusingXSL(inputXML, inputXSL, outputXML);

}

public void convertXMLusingXSL(String inputXML, String inputXSL, String outputXML) throws Exception {

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();

DocumentBuilder db = dbf.newDocumentBuilder();

Document doc = db.parse(inputXML);

doc.normalize();

StreamSource xsl = new StreamSource(new File(inputXSL));

TransformerFactory tf = TransformerFactory.newInstance();

tf.newTransformer(xsl).transform(new DOMSource(doc), new StreamResult(new File(outputXML)));

}

The above Program applies the XSLT to the XML and generates the below XML as the output XML. (3.XML)

<?xml version="1.0" encoding="UTF-8"?>
<Employee>
    Appended Value: Developer 25216 India
</Employee>

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

Appended Value: Developer 25216 India

</Employee>

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