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How to get details of Parse Failure in Jdom?

Posted on 2002-05-02
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Last Modified: 2010-03-31
I'm using a JDOM SaxBuilder object to enforce schema validation on documents which are posted to my servlets and it works very well. However, is there a way of getting details about the element or attribute which is causing the validation to fail? At the moment I get a message like "Datatype error: Value ' ' must be one of [Y, N]" but what I'd really like to know is which attribute out of the many in my document has caused the problem.

Regards

Dave
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Question by:howesd
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3 Comments
 
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Expert Comment

by:heyhey_
ID: 6985897
I think that you can solve this problem by setting your own org.xml.sax.ErrorHandler
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Author Comment

by:howesd
ID: 6985924
I've done that - here's a copy of it - it's just a copy of one that I got from the net at the moment. I can't find anything within the SaxParseException class which tells me what the attribute causing the problem is. Line number of always 2 as I just get the XML posted to me.

Dave

import org.jdom.input.*;
import org.xml.sax.*;
import BslException.*;

  class OrchidSaxErrorHandler extends BuilderErrorHandler
  {
    public void warning(SAXParseException exception) throws SAXException {
        // Bring things to a crashing halt
        throw(new SAXException("**Parsing Warning**" +
                           "  Line:    " +
                              exception.getLineNumber() + "" +
                           "  URI:     " +
                              exception.getSystemId() + "" +
                           "  Message: " +
                              exception.getMessage()));        
    }
    public void error(SAXParseException exception) throws SAXException {
        // Bring things to a crashing halt
        throw(new SAXException("**Parsing Error**" +
                           "  Line:    " +
                              exception.getLineNumber() + "" +
                           "  URI:     " +
                              exception.getSystemId() + "" +
                           "  Message: " +
                              exception.getMessage()));        
    }

    public void fatalError(SAXParseException exception) throws SAXException {
        // Bring things to a crashing halt
        throw(new SAXException("**Parsing Fatal Error**" +
                           "  Line:    " +
                              exception.getLineNumber() + "" +
                           "  URI:     " +
                              exception.getSystemId() + "" +
                           "  Message: " +
                              exception.getMessage()));        
    }
}


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LVL 16

Accepted Solution

by:
heyhey_ earned 200 total points
ID: 6985954
afair all you can get from validator is row and column numbers. after all validator is supposed to 'validate' the document - to tell you if this is a valid document or not. it is not supposed to analyze the file and try to guess what's the error.
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