how to combine xml and xsl files

[Purnil Soni]

i have an XSL file that can transform an XML file to HTML.
i want to use both these files in a servlet that can combine them and output the resultant html.
can you please help me with the same.
thanks in advance.

[Stewart Johnson]

import javax.xml.transform.sax.SAXSource;
import org.xml.sax.helpers.XMLReaderFactory;
import org.xml.sax.XMLReader;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

import javax.xml.transform.Source;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.Result;


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

import javax.servlet.*;
import javax.servlet.http.*;

public class TransformServlet extends HttpServlet {

private InputStream sXmlFilePath;
private InputStream sXSLFilePath;
private static final String parserClass = "org.apache.xerces.parsers.SAXParser";


protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

ServletContext sc = getServletContext();
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();



sXmlFilePath = sc.getResourceAsStream("/xml/yourxml.xml");
sXSLFilePath = sc.getResourceAsStream("/xsl/yourxsl.xsl");

try{
XMLReader reader = XMLReaderFactory.createXMLReader(parserClass);
Source source = new SAXSource(reader, new InputSource(sXmlFilePath));
Source style = new StreamSource(sXSLFilePath);
TransformerFactory transFactory = TransformerFactory.newInstance();
Transformer trans = transFactory.newTransformer(style);
StreamResult result = new StreamResult(new StringWriter());
trans.transform(source, result);
String htmlString = result.getWriter().toString();
out.write(htmlString);
}catch(SAXException se){

System.out.println("SAXException"+se);

}catch(TransformerConfigurationException tce){

System.out.println("TransformerConfigurationException"+tce);

}catch(TransformerException te){
System.out.println("TransformerException"+te);

}

}


protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}

protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}

public String getServletInfo() {
return "Short description";
}
// </editor-fold>
}

[Paul Clapham]

I would take this:

StreamResult result = new StreamResult(new StringWriter());

and replace it by this:

 StreamResult result = new StreamResult(response.getOutputStream());

and remove the code that copied the string, thus writing the HTML directly to the servlet's output. That avoids having to materialize the entire output in memory, and it also avoids problems that arise when the output's assumed encoding doesn't match the system's default encoding.

[Purnil Soni]

thanks a lot.
that was really quick and helpful.
three cheers to all.