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Posted to j-dev@xerces.apache.org by Kavita Ashok Sukerkar <ks...@engin.umich.edu> on 2003/07/02 16:53:00 UTC
DOMParser exceptions
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, 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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Re: DOMParser exceptions
Posted by "K. Venugopal" <k....@sun.com>.
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,
>
xerces-j-user@xml.apache.org 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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>To unsubscribe, e-mail: xerces-j-dev-unsubscribe@xml.apache.org
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>
>
>
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