use JSP tags
> -----Original Message-----
> From: ext Duffey, Kevin [mailto:[EMAIL PROTECTED]]
> Sent: 03. January 2001 20:41
> To: [EMAIL PROTECTED]
> Subject: XML to HTML via XSL/XSLT??
>
>
> Hi all,
>
> I am in the process of trying my hand at using XSL/T to
> convert XML output
> from a JSP page, into HTML. The code I have thus far uses the
> latest XALAN
> processor (which comes with the latest XERCES parser). Thus,
> I am using the
> TrAX APIs. Here is my code snippet:
>
> // for the sake of bevity, r is a Resource object (a class I
> created) that
> contains mappings from an xml config file. Mostly, the
> getName() returns a
> path to a JSP page relative to the web-app (in other wrods
> r.getName() =
> "/inside/page.jsp" not "c:\dir\www\inside\page.jsp").
> getXSL() returns the
> relative web-app path to an XSL that is to be used to
> transform the XML
> output the JSP page returns, to HTML.
>
>
>
> // Transform the xml output using the xsl stylesheet and
> the XALAN XSLT
> // engine, placing the output stream of the transformation in the
> // HttpServletResponse output stream.
>
> response.setContentType("text/html"); // always assume
> HTML output from
> this controller
>
> try
> {
> TransformerFactory tFactory = TransformerFactory.newInstance();
> Transformer transformer = tFactory.newTransformer(new
> StreamSource(new
> FileInputStream(getServletContext().getRealPath(r.getXSL()))));
> transformer.transform(new StreamSource(new
> FileInputStream(getServletContext().getRealPath(r.getName()))), new
> StreamResult(response.getOutputStream()));
> }
> catch(Exception e)
> {
> System.out.println("Exception while trying to transform
> document.
> MESSAGE = " + e.getMessage());
>
> // attempt to forward to an error page
> try
> {
>
> getServletContext().getRequestDispatcher("/no_mapping.jsp").fo
> rward(request,
> response);
> }
> catch(Exception e2)
> {
> System.out.println("Exception trying to forward to
> /no_mapping.jsp.
> MESSAGE = " + e2.getMessage());
> return;
> }
> }
>
>
> I am not sure why, but this doesn't seem to work. I
> originally got a "file
> not found 'file:///xsl/demo.xsl'" error and then I added the
> getServletContext().getRealPath(r.getXSL()) so that it would hopefully
> return a path relative to the web-app the page is found in.
>
> The message I get now is TrAX Tranform Exception..or
> something like that
> (Sorry..I am at work and I don't have the web-app here to
> test and get the
> exact message).
>
> My main interest is in supplying the XSL and the XML to the
> XALAN processor,
> which then fills the response.outputstream with the
> result..HTML output, and
> sends that back. I would like it as streamlined as
> possible..for speed. I
> have yet to examine the output of the JSP page..so I am not
> sure that it is
> doing what it should.
>
> Where I am really stuck is in "getting" the JSP page and the XSL page.
> Ideally, I need to access the JSP page as if a web browser is
> hitting it,
> and grab its output..this is the only way to invoke the JSP
> processor to
> compile the JSP into a servlet (if not already done), and
> treat it as if a
> web browser was accessing it. I want to use JSP so that I can
> dynamcially
> put data from a javabean in the output. Otherwise..I would
> just use XML. So,
> the two areas I am most in need of help:
>
> 1) How do I use URL and/or URLConnection to make a URL
> request to a JSP page
> "relative" to the web-app the path is in.
> 2) How do I read in the XSL via an InputStream so that I have
> the exact file
> itself?
>
> Thanks for any help.
>
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> Some relevant FAQs on JSP/Servlets can be found at:
>
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Some relevant FAQs on JSP/Servlets can be found at:
http://java.sun.com/products/jsp/faq.html
http://www.esperanto.org.nz/jsp/jspfaq.html
http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
