XSD Schema Validator on XML DOM Object

XML Tutorials - Herong's Tutorial Examples

∟Validating XML Documents Against Specified XML Schemas

∟XSD Schema Validator on XML DOM Object - Errors

This section provides some errors from the XSD schema validation process on invalid XML files represented in Document objects using the JAXP API.

Now let test XsdSchemaDomValidatorWithErrorHandler.java with some invalid XML files. The first one has an extra node, first_html_extra_node.xml:

<?xml version="1.0" encoding="utf-8"?>
<html>
<body>
<p>My first HTML document in XML format.</p>
</body>
</html>

Here is the test result with JDK:

herong> java XsdSchemaDomValidatorWithErrorHandler \
   first_html.xsd first_html_extra_node.xml

Validator Class:
   com.sun.org.apache.xerces.internal.jaxp.validation.ValidatorImpl

org.xml.sax.SAXParseException; cvc-type.3.1.2: Element 'body' is a
simple type, so it must have no element information item [children].

Failed with errors: 1

The validation reported a very clear error message: the "body" element has a child element, which is not allowed by the schema.

Here is another invalid XML, first_html_extra_attribute.xml:

<?xml version="1.0" encoding="utf-8"?>
<html>
<body bgcolor="#eeeeee">
<p>My first HTML document in XML format.</p>
</body>
</html>

Here is the test result with JDK:

herong> java XsdSchemaDomValidatorWithErrorHandler \
   first_html.xsd first_html_extra_attribute.xml

Validator Class:
   com.sun.org.apache.xerces.internal.jaxp.validation.ValidatorImpl

org.xml.sax.SAXParseException: cvc-type.3.1.1:
Element 'body' is a simple type,
so it cannot have attributes, excepting those whose namespace name
is identical to 'http://www.w3.org/2001/XMLSchema-instance'
and whose [local name] is one of 'type', 'nil', 'schemaLocation'
or 'noNamespaceSchemaLocation'. However, the attribute, 'bgcolor'
was found.

org.xml.sax.SAXParseException; cvc-type.3.1.2: Element 'body' is a
simple type, so it must have no element information item [children].

Failed with errors: 2

Good. My validator, XsdSchemaDomValidatorWithErrorHandler.java, works on multiple errors. I like SAXParseException error messages. They give detailed information.