Validate xml with local dtd

Question

hello
trying to write a unit test that validates some xml we are marshalling against a dtd. here is a snippet of code. The problem is how to specify the dtd against which the xml is to be validated. verification_transaction is our root xml element. when i run this code i get a
malformedurlexception: no protocol: verification.dtd
any ideas?
                StringWriter writer = new StringWriter();
               // write the doctype declaration
                writer.write("<!DOCTYPE verification_transaction SYSTEM \"verification.dtd\">");
                // now marshal to the writer
          marshaller.marshal(spec, requestType, componentNumber, writer);
          InputStream inputStream = new ByteArrayInputStream(writer.getBuffer().toString().getBytes());
          Reader reader = new InputStreamReader(inputStream);
                // get a sax parser that is validating
          TestHandler handler = new TestHandler();
          SAXParserFactory factory = SAXParserFactory.newInstance();
          factory.setValidating(true);
          SAXParser saxParser = factory.newSAXParser();
          try {
               saxParser.parse(new InputSource(reader), handler);
               fail("Should have thrown exception.");
          } catch (RuntimeException e) {
               // pass
          }Message was edited by:
shrndegruv

Answer 1

I needed to do a bunch of things.
1.
                URL url = getClass().getResource("/verification.dtd");
          StringWriter writer = new StringWriter();
          writer.write("<?xml version=\"1.0\"?><!DOCTYPE verification_transaction SYSTEM \"" + url + "\">");and then I had to use a handler which processed the errors (which I got from an online tutorial):
private static class MyErrorHandler extends DefaultHandler {
          public void warning(SAXParseException e) throws SAXException {
               System.out.println("Warning: ");
               printInfo(e);
          public void error(SAXParseException e) throws SAXException {
               System.out.println("Error: ");
               printInfo(e);
               throw new SAXException("DTD Validation Error: [" + e.getMessage() + "]");
          public void fatalError(SAXParseException e) throws SAXException {
               System.out.println("Fatal error: ");
               printInfo(e);
          private void printInfo(SAXParseException e) {
               System.out.println("   Public ID: " + e.getPublicId());
               System.out.println("   System ID: " + e.getSystemId());
               System.out.println("   Line number: " + e.getLineNumber());
               System.out.println("   Column number: " + e.getColumnNumber());
               System.out.println("   Message: " + e.getMessage());
     }