Recently at last we have switched our projects to Java 1.6. When executing
the tests I found out that using 1.6 a SAXParseException is not thrown which has been thrown using 1.5.
Below is my test code to demonstrate
the problem.
import java.io.StringReader;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.stream.StreamSource;
import javax.xml.validation.SchemaFactory;
import org.junit.Test;
import org.xml.sax.InputSource;
import org.xml.sax.SAXParseException;
/**
* Test class to demonstrate
the difference between JDK 1.5 to JDK 1.6.
*
* Seen on Linux:
*
* <pre>
* #java version "1.6.0_18"
* Java(TM) SE Runtime Environment (build 1.6.0_18-b07)
* Java HotSpot(TM) Server VM (build 16.0-b13, mixed mode)
* </pre>
*
* Seen on OSX:
*
* <pre>
* java version "1.6.0_17"
* Java(TM) SE Runtime Environment (build 1.6.0_17-b04-248-10M3025)
* Java HotSpot(TM) 64-Bit Server VM (build 14.3-b01-101, mixed mode)
* </pre>
*
* @author dhiller (creator)
* @author $Author$ (last editor)
* @version $Revision$
* @since 12.03.2010 11:32:31
*/
public class TestXMLValidation {
/**
* Tests
the schema validation of an XML against a simple schema.
*
* @throws Exception
* Falls ein Fehler auftritt
* @throws junit.framework.AssertionFailedError
* Falls eine Unit-Test-Pruefung fehlschlaegt
*/
@Test(expected = SAXParseException.class)
public void testValidate() throws Exception {
final StreamSource schema = new StreamSource( new StringReader( "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
+ "<xs:schema xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" "
+ "elementFormDefault=\"qualified\" xmlns:xsd=\"undefined\">" + "<xs:element name=\"Test\"/>" + "</xs:schema>" ) );
final String xml = "<Test42/>";
final DocumentBuilderFactory newFactory = DocumentBuilderFactory.newInstance();
newFactory.setSchema( SchemaFactory.newInstance( "http://www.w3.org/2001/XMLSchema" ).newSchema( schema ) );
final DocumentBuilder documentBuilder = newFactory.newDocumentBuilder();
documentBuilder.parse( new InputSource( new StringReader( xml ) ) );
}
}
When using a JVM 1.5
the test passes, on 1.6 it fails with "Expected exception SAXParseException".
The Javadoc of
the DocumentBuilderFactory.setSchema(Schema) Method says:
When errors are found by
the
validator,
the parser is responsible
to report them to
the user-specified
ErrorHandler (or if
the error handler
is not set, ignore them or throw
them), just like any other errors
found by
the parser itself. In other
words, if
the user-specified
ErrorHandler is set, it must receive
those errors, and if not, they must be
treated according to
the
implementation specific default error
handling rules.
The Javadoc of
the DocumentBuilder.parse(InputSource) method says:
BTW: I tried setting an error handler via setErrorHandler, but there still is no exception.
Now my question:
What has changed to 1.6 that prevents
the schema validation to throw a SAXParseException? Is it related to
the schema or to
the xml that I tried to parse?
