Re: DOMParser exceptions

[K. Venugopal]

Hi Kavita ,





Kavita Ashok Sukerkar wrote:

Hi everyone,

 I am trying to use the Xerces parsers for xml schema validation within
Java code.  I use the parse function from the XMLParser class, that
DOMParser inherits from.  This function throws two kinds of exceptions:
IOException and SAXException.  But what if the xml file I am supplying is
well formed and NOT valid? DOes it throw any kind of exception?  My
program just outputs an error message saying that the file was not valid.
I want my function to be able to return a 0 if the parsing was
unsuccessful,
[EMAIL PROTECTED] is the list for user related queries,
One way is to write a small function that returns boolean value 
appropriately when errors/warnings .. are reported, register a error 
handler to identify them. Refer to sample programs provided by xerces 
for more help on error handlers.

Hope this helps.

Regards,
venu




but I can't do that if there are just error messages being
outputted.  This is my code.....can someone help me please!
import org.apache.xerces.parsers.DOMParser;
import org.apache.xerces.parsers.*;
import org.w3c.dom.Document;
import org.xml.sax.SAXException;
import org.xml.sax.SAXNotRecognizedException;
import org.xml.sax.SAXNotSupportedException;
import java.io.IOException;
public class DOMParserDemo
{
    private static void setFeature(DOMParser parser, String feature,
                                             boolean setting)
    {
        try
        {
                parser.setFeature(feature, setting);
        }
        catch (SAXNotRecognizedException e)
        {
           System.out.print("Unrecognized feature: ");
           System.out.println(feature);
        }
        catch (SAXNotSupportedException e)
        {
           System.out.print("Unrecognized feature: ");
           System.out.println(feature);
        }
    }
    public static void main (String args[])
    {
        DOMParser parser = null;
        parser = new DOMParser();
        Document doc = null;

        setFeature(parser, "http://xml.org/sax/features/validation";,
                         true);
        setFeature(parser,
         "http://apache.org/xml/features/validation/schema",true);
        setFeature(parser,
     "http://apache.org/xml/features/validation/schema-full-checking";, true);
        try
        {
           parser.parse("C:/Program Files/Xinox Software/JCreator
                    LE/MyProjects/soaptest/XsuTest/SQRT.xml");
        }
        catch (IOException ie)
        {
           System.out.println("Could not read file.");
        }
        catch (SAXException e)
        {
           System.out.print("Could not create Document: ");
           System.out.println(e.getMessage());
        }
        catch (Exception e)
        {
                System.out.print("Error occurred\n");
         }
        System.out.println("done\n");
   }
}
Thanks,
Kavita
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