Question

Hi Can anyone help me in html to xml conversion using xslt in java.I converted xml to html using xslt in java.This is the code i used for that converstion:

import javax.xml.transform.*;

import java.net.*;
import java.io.*;

public class HowToXSLT {

public static void main(String[] args) {

  try {

    TransformerFactory tFactory = TransformerFactory.newInstance();

    Transformer transformer =
      tFactory.newTransformer
         (new javax.xml.transform.stream.StreamSource
            ("howto.xsl"));

    transformer.transform
      (new javax.xml.transform.stream.StreamSource
            ("howto.xml"),
       new javax.xml.transform.stream.StreamResult
            ( new FileOutputStream("howto.html")));
    }
  catch (Exception e) {
    e.printStackTrace( );
    }
  }
}

But i dont know the reverse process of this program that is to convert html to xml? Is there is any jar files available to do that? please help me…

Answer 1

Generally, it isn’t possible to “reverse” a transformation, because a transformation in the general case isn’t a 1:1 mapping.

For example, if the transformation does this:

<xsl:value-of select= "/x * /x"/>

and we get as result: 16

(and we know that the source XML document had only one element),

it isn’t possible to determine from the value 16 whether the source XML document was:

<x>4</x>

or whether it was:

<x>-4</x>

And the above was only a simple example! 🙂