validating an xml file using sax parser 2003-04-29 - By Shital Joshi
Hi Friends,
I am trying to validate an xml file using sax parser. But my program never
finds schema file. Whether the schema file is there or not, it always throws
bunch exceptions like "Element type for "xml element" must be declared"...
I am sure I am doing something wrong in implementing the entity resolver
because the program never prints any debugging information in
resolveEntity() method. If you could point out the error, that would be
great help.
Here is code I am using for the same:
public void validateTheDocument() {
try{
String parserName = "org.apache.xerces.parsers.SAXParser";
XMLReader parser = XMLReaderFactory.createXMLReader(parserName);
parser.setFeature("http://xml.org/sax/features/validation", true);
parser.setFeature(
"http://apache.org/xml/features/validation/schema",true );
parser.setFeature("http://apache.org/xml/features/validation/schema-full-che
cking", true);
parser.setFeature("http://apache.org/xml/features/continue-after-fatal-error
", true);
ErrorHandler defaultHandler = new SAXErrorHandler();
SchemaResolver resolver = new SchemaResolver();
parser.setEntityResolver(resolver);
parser.setErrorHandler(defaultHandler);
InputSource source = new InputSource(UserCompany.getDestinationFile());
System.out.println("the destination file is " +
UserCompany.getDestinationFile());
parser.parse(source);
} catch (SAXNotSupportedException ex)
{
} catch (SAXException e)
{
} catch (IOException i )
{
}
And here is my SchemaResolver class:
public class SchemaResolver implements EntityResolver
{
public SchemaResolver()
{
}
public InputSource resolveEntity(String publicId, String systemId) {
System.out.println("the system id is " + systemId);
System.out.println("the public id is " + publicId);
return new InputSource("h://afgi/schema.xsd");
}
}
-Shital Joshi
732-560-0010 x215
MFG Systems
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