Apply XSL to XML (Java)

[Anjali S Sharma]

I have my XML in a StringBuffer variable.
Example,
StringBuffer sb = new StringBuffer();
sb = sb.append("<node1><node2><node2><node3></node3></node1>") ;

This application is deployed on Tomcat. Inside the web application, I have my XSl.
Can someone please let me know how can I apply this XSL to the above xml, so that I get the HTML result in a variable (which I'll send to the JSP to be displayed)

[Gamini Sirisena]

You can use core java APIs (i.e. JAXP) to achieve this.

What you need to do ultimately is call javax.xml.transform.Tranformer.transform(
javax.xml.transform.Source, javax.xml.transform.Result)

Some other hints to solve the problem the way you want is the
StringReader class and the StringWriter class.

Another hint to a different approach is that the implicit "out" object in a JSP is a Writer (more specifically a PrintWriter).

Google for some sample programs using some relevant keywords which
will make your life a bit easier.

Also here is a link to the JSE 6 API. Check the javax.xml.tranform and javax.xml.tranform.stream packages.

[Anjali S Sharma]

Thank you
I did this

  public void applyTransformation() {


String outputHtml="";
//String contextPath = getContext().toString();
//String contextPath = getPageContext().getRequest().getRealPath("/WEB-INF/classes");
String contextPath = getPageContext().getServletContext().getRealPath(File.separator);
String xsl=contextPath+"custom\\xsl\\FbDetailedView.xsl";
System.out.println(xsl);
try {

            System.out.println("apply trans :   "+serializedXML);
StreamSource xmlSource = new StreamSource(new StringReader(serializedXML.toString()));
System.out.println("xmlSource   "+xmlSource.toString());
StreamSource xsltSource = new StreamSource(new StringReader(xsl));
System.out.println("xslSource   "+xsltSource.toString());
StringWriter swResult = new StringWriter();
StreamResult result = new StreamResult(swResult);
            System.out.println("result  "+result.toString());
 

 
Transformer t = TransformerFactory.newInstance().newTransformer(xsltSource);
 
t.transform(xmlSource, result);
String html = swResult.toString();
System.out.println(html);
}catch(Exception e) {
e.printStackTrace();
}

}  

but the problem seems to be this line
StreamSource xsltSource = new StreamSource(new StringReader(xsl));
I have path to xsl in the variable "xsl". But I guess the paramter expects the XSL content. How do I get it here?

[Gamini Sirisena]

For the xsl try some type of InputStream..