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Posted to j-users@xerces.apache.org by "O'Connor, Ivan" <iv...@csfb.com> on 2001/04/25 14:10:31 UTC
How to do XML Schema validation using Xerces-J?
I'm having a problem with XML Schema validation - it's as if the schema isn't being read. I'm parsing personal-schema.xml from the Xerces-J 1.3.0 distribution, and I've put together a simple program to parse the document:
import java.io.IOException;
import org.xml.sax.Attributes;
import org.xml.sax.ErrorHandler;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.DefaultHandler;
import org.xml.sax.helpers.XMLReaderFactory;
public class Parser extends DefaultHandler {
private XMLReader m_reader;
public Parser() throws SAXException {
// create the parser (controlled by the org.xml.sax.driver property)
// pick up the Apache Xerces parser by default
if (System.getProperty("org.xml.sax.driver") == null) {
System.setProperty("org.xml.sax.driver", "org.apache.xerces.parsers.SAXParser");
}
m_reader = XMLReaderFactory.createXMLReader();
// register XMLParser as the handler with the SAX parser
m_reader.setErrorHandler(this);
// switch on namespaces...
m_reader.setFeature("http://xml.org/sax/features/namespaces", true);
// and validation
m_reader.setFeature("http://xml.org/sax/features/validation", true);
}
public void parse(String fileName) throws SAXException, IOException {
// parse the document
m_reader.parse(fileName);
}
// ErrorHandler interface
public void warning(SAXParseException ex) {
System.out.println("Warning: " + ex);
}
public void error(SAXParseException ex) {
System.out.println("Error: " + ex);
}
public void fatalError(SAXParseException ex) {
System.out.println("Fatal error: " + ex);
}
// Test code
public static class Test {
public static void main(String[] args) {
if (args.length < 1) {
System.err.println ("Usage: Parser$Test <xmlFile>");
System.exit(1);
}
else {
try {
Parser parser = new Parser();
parser.parse(args[0]);
System.out.println("Finished parsing");
}
catch (SAXException ex) {
ex.printStackTrace(System.err);
}
catch(IOException io) {
io.printStackTrace(System.err);
}
System.exit(0);
}
}
}
}
When I run this code, passing personal-schema.xml as the file to parse, I get the following output:
Error: org.xml.sax.SAXParseException: Element type "personnel" must be declared.
Error: org.xml.sax.SAXParseException: Attribute "xsi:noNamespaceSchemaLocation" must be declared for element type "personnel".
Error: org.xml.sax.SAXParseException: Element type "person" must be declared.
Error: org.xml.sax.SAXParseException: Attribute "id" must be declared for element type "person".
Error: org.xml.sax.SAXParseException: Element type "name" must be declared.
Error: org.xml.sax.SAXParseException: Element type "family" must be declared.
Error: org.xml.sax.SAXParseException: Element type "given" must be declared.
Error: org.xml.sax.SAXParseException: Element type "email" must be declared.
Error: org.xml.sax.SAXParseException: Element type "link" must be declared.
Error: org.xml.sax.SAXParseException: Attribute "subordinates" must be declared for element type "link".
Error: org.xml.sax.SAXParseException: Element type "person" must be declared.
Error: org.xml.sax.SAXParseException: Attribute "id" must be declared for element type "person".
Error: org.xml.sax.SAXParseException: Element type "name" must be declared.
Error: org.xml.sax.SAXParseException: Element type "family" must be declared.
Error: org.xml.sax.SAXParseException: Element type "given" must be declared.
Error: org.xml.sax.SAXParseException: Element type "email" must be declared.
Error: org.xml.sax.SAXParseException: Element type "link" must be declared.
Error: org.xml.sax.SAXParseException: Attribute "manager" must be declared for element type "link".
Error: org.xml.sax.SAXParseException: Element type "person" must be declared.
Error: org.xml.sax.SAXParseException: Attribute "id" must be declared for element type "person".
Error: org.xml.sax.SAXParseException: Element type "name" must be declared.
Error: org.xml.sax.SAXParseException: Element type "family" must be declared.
Error: org.xml.sax.SAXParseException: Element type "given" must be declared.
Error: org.xml.sax.SAXParseException: Element type "email" must be declared.
Error: org.xml.sax.SAXParseException: Element type "link" must be declared.
Error: org.xml.sax.SAXParseException: Attribute "manager" must be declared for element type "link".
Error: org.xml.sax.SAXParseException: Element type "person" must be declared.
Error: org.xml.sax.SAXParseException: Attribute "id" must be declared for element type "person".
Error: org.xml.sax.SAXParseException: Element type "name" must be declared.
Error: org.xml.sax.SAXParseException: Element type "family" must be declared.
Error: org.xml.sax.SAXParseException: Element type "given" must be declared.
Error: org.xml.sax.SAXParseException: Element type "email" must be declared.
Error: org.xml.sax.SAXParseException: Element type "link" must be declared.
Error: org.xml.sax.SAXParseException: Attribute "manager" must be declared for element type "link".
Error: org.xml.sax.SAXParseException: Element type "person" must be declared.
Error: org.xml.sax.SAXParseException: Attribute "id" must be declared for element type "person".
Error: org.xml.sax.SAXParseException: Element type "name" must be declared.
Error: org.xml.sax.SAXParseException: Element type "family" must be declared.
Error: org.xml.sax.SAXParseException: Element type "given" must be declared.
Error: org.xml.sax.SAXParseException: Element type "email" must be declared.
Error: org.xml.sax.SAXParseException: Element type "link" must be declared.
Error: org.xml.sax.SAXParseException: Attribute "manager" must be declared for element type "link".
Error: org.xml.sax.SAXParseException: Element type "person" must be declared.
Error: org.xml.sax.SAXParseException: Attribute "id" must be declared for element type "person".
Error: org.xml.sax.SAXParseException: Element type "name" must be declared.
Error: org.xml.sax.SAXParseException: Element type "family" must be declared.
Error: org.xml.sax.SAXParseException: Element type "given" must be declared.
Error: org.xml.sax.SAXParseException: Element type "email" must be declared.
Error: org.xml.sax.SAXParseException: Element type "link" must be declared.
Error: org.xml.sax.SAXParseException: Attribute "manager" must be declared for element type "link".
Finished parsing
Does anyone have any suggestions how I can fix this to get the parser to recognise the schema? By the way, the schema, xml instance and class are all living in the same directory.
Thanks.
Ivan
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