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Location, Location, Location and JAXP

Still on the XSLT theme. The XSLT transformed output contains urls for the hyperlinks, images and stylesheets. To get relative urls to work the same in different browsers after responses are made up on the fly, dispatched and filtered is impossible. Set Content Base header doesn't work.
JAXP comes to the rescue here by allowing us to inject an absolute url into the transform object:

tf = TransformerFactory.newInstance();
xform = tf.newTransformer(new StreamSource(ctx.getResourceAsStream(xslt)));
xform.setParameter("absolute_url", absoluteUrl);

The XSL transformation picks up this value as a parameter:

<xsl:param name="absolute_url" select="'http://default'"/>

The absolute url can be picked up on the fly with something like:

StringBuffer absoluteUrl = new StringBuffer("http://");
String serverName = request.getServerName();
absoluteUrl.append(serverName);
int serverPort = request.getServerPort();
if (serverPort > 0 && serverPort != 80)
{
absoluteUrl.append(":" + serverPort);
}
String contextName = request.getContextPath();
absoluteUrl.append(contextName + "/");

Job's a...

Posted at 06:31AM Jul 30, 2006 by Brian Peter Clark in View Factory & XSLT  |