Hi All,
I am new to XML and XML parsing.
I am having a task of taking a XML file and to generate report in HTML.
What i found out is i can have one XML file and i have to have a XSL
file for it.
Then i have to take XML and XSL as source and generate the HTML result.Can anyone please explain how to proceed with it.
Download Xalan from Apache. Then, place xalan.jar (along with xml-apis.jar) on your CLASSPATH and use something like the following:
public final class XslTransformer extends Object {
/////////////////////
// Class Variables //
/////////////////////
private static final Map<String, Templates> STYLESHEET_CACHE;
private static final TransformerFactory FACTORY;
//////////////////
// Constructors //
//////////////////
static {
STYLESHEET_CACHE = new HashMap<String, Templates>();
FACTORY = TransformerFactory.newInstance();
}
private XslTransformer() {
super();
}
////////////////////
// Public Methods //
////////////////////
public static final void transform(final String uriXsl, final InputStream xml, final OutputStream target) {
Templates xslTemplates = getTemplates(uriXsl);
Transformer transformer = null;
try {
transformer = xslTemplates.newTransformer();
}
catch (TransformerConfigurationException fatal) {
throw new ConfigurationError("Unable to create XSL transformer", fatal);
}
try {
transformer.transform(new StreamSource(xml), new StreamResult(target));
}
catch (TransformerException e) {
throw new ParseError("Unable to transform XML using XSL stylesheet", e);
}
}
/////////////////////
// Private Methods //
/////////////////////
private static Templates getTemplates(final String uri) {
Templates templates = STYLESHEET_CACHE.get(uri);
if (templates != null) {
return templates;
}
InputStream in = XslTransformer.class.getResourceAsStream(uri);
if (in == null) {
try {
in = new FileInputStream(uri);
}
catch (FileNotFoundException fatal) {
throw new ConfigurationError("Unable to locate XSL stylesheet at '" + uri + "'", fatal);
}
}
try {
templates = FACTORY.newTemplates(new StreamSource(in));
}
catch (TransformerConfigurationException fatal) {
throw new ConfigurationError("Unable to parse XSL templates from '" + uri + "'", fatal);
}
STYLESHEET_CACHE.put(uri, templates);
return templates;
}
}
- Saish
Actually if you are using Java 1.4 or later, you already have XSLT built in to your Java installation. I believe it is a version of Xalan but it doesn't really matter. The point is that you don't have to download anything and you don't have to mess with your classpath.
But if you are using Java 1.3 then you do need to do the download.
