DOM Parsing problems... (newbie in trouble)

Question

I am trying to get a DOM Parser contruct a DOM Object from an XML file... I am having trouble getting the code validate against my XML Schema: <p>
<?xml version="1.0" encoding="UTF-8"?> <
<!-- edited with XML Spy v4.4 U (http://www.xmlspy.com) by Fedro E. Ponce de Leon Luengas (ASI Consulores, S.A. de C.V.) -->
<xs:schema targetNamespace="http://palaciohierro.com.mx/mde/expe" xmlns="http://palaciohierro.com.mx/mde/expe" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="existencia-peticion" type="epType">
<xs:annotation>
<xs:documentation>Peticion de existencias para la Mesa de Eventos Web</xs:documentation>
</xs:annotation>
</xs:element>
<xs:complexType name="epType">
<xs:annotation>
<xs:documentation>peticion de existencia</xs:documentation>
</xs:annotation>
<xs:sequence>
<xs:element name="articulo" type="articuloType" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
<xs:complexType name="articuloType">
<xs:annotation>
<xs:documentation>articulo</xs:documentation>
</xs:annotation>
<xs:attribute name="id_articulo" type="IdentifierType" use="required"/>
<xs:attribute name="sku" type="skuType" use="required"/>
</xs:complexType>
<xs:simpleType name="IdentifierType">
<xs:annotation>
<xs:documentation>identificador</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:long">
<xs:minInclusive value="0"/>
<xs:maxInclusive value="999999999999999999"/>
<xs:totalDigits value="22"/>
<xs:fractionDigits value="0"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="skuType">
<xs:annotation>
<xs:documentation>sku</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:string">
<xs:minLength value="11"/>
<xs:maxLength value="20"/>
<xs:pattern value="\d{11,20}"/>
</xs:restriction>
</xs:simpleType>
</xs:schema>
taking this sample XML file:
<?xml version="1.0" encoding="UTF-8"?>
<!--Sample XML file generated by XML Spy v4.4 U (http://www.xmlspy.com)-->
<expe:existencia-peticion xmlns:expe="http://palaciohierro.com.mx/mde/expe" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://palaciohierro.com.mx/mde/expe
C:\oracle\Oracle9iDS\jdev\mywork\testCompra\MesaEventos\src\ph\mesaeventos\schema\existencia-peticion.xsd">
<articulo id_articulo="450" sku="12245110021"/>
<articulo id_articulo="15" sku="45421213223"/>
<articulo id_articulo="12" sku="121131231858"/>
<articulo id_articulo="74" sku="4101031234545"/>
<articulo id_articulo="871" sku="022324563212"/>
</expe:existencia-peticion>
with the following code:
public Document getDOM( String existenciapeticionXML ) throws Exception
// Obtain parser instance and parse the document
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setValidating( true );
factory.setNamespaceAware( true );
DocumentBuilder builder = factory.newDocumentBuilder();
byte buf[] = existenciapeticionXML.getBytes();
ByteArrayInputStream stream = new ByteArrayInputStream( buf );
Document doc = builder.parse( stream );
return doc;
I am getting the following Exception:
oracle.xml.parser.v2.XMLParseException: Element 'expe:existencia-peticion' used but not declared.
void oracle.xml.parser.v2.XMLError.flushErrors()
XMLError.java:145
void oracle.xml.parser.v2.NonValidatingParser.parseDocument()
NonValidatingParser.java:263
void oracle.xml.parser.v2.XMLParser.parse(org.xml.sax.InputSource)
XMLParser.java:141
org.w3c.dom.Document oracle.xml.jaxp.JXDocumentBuilder.parse(org.xml.sax.InputSource)
JXDocumentBuilder.java:96
org.w3c.dom.Document javax.xml.parsers.DocumentBuilder.parse(java.io.InputStream)
DocumentBuilder.java:119
org.w3c.dom.Document ph.mesaeventos.mesa.xml.ExistenciaPeticionDOM.getDOM(java.lang.String)
ExistenciaPeticionDOM.java:26
void ph.mesaeventos.mesa.xml.Test.main(java.lang.String[])
Test.java:38
What am I doing wrong? I am clueless... please help!
Thanks,

Answer 1

I finally managed to make it work.... well quite!
Having an XML Doc like this:
<?xml version="1.0"?>
<existencia-peticion xmlns = "http://palaciohierro.com.mx/mde/expe">
<articulo id_articulo="10" sku="00000000010"></articulo>
<articulo id_articulo="11" sku="00000000011"></articulo>
<articulo id_articulo="12" sku="00000000012"></articulo>
<articulo id_articulo="13" sku="00000000013"></articulo>
</existencia-peticion>
with an schema like:
<?xml version="1.0" encoding="UTF-8"?>
<schema targetNamespace="http://palaciohierro.com.mx/mde/expe"
xmlns="http://www.w3.org/2001/XMLSchema"
xmlns:expe="http://palaciohierro.com.mx/mde/expe"
elementFormDefault="qualified">
<annotation>
<documentation xml:lang="es">
Esquema de peticion de existencias para la Mesa de Eventos Web
Copyright 2002 palaciodehierro.com.mx. Todos los derechos reservados.
</documentation>
</annotation>
<element name="existencia-peticion" type="expe:epType">
<unique name="id_articulo">
<selector xpath="expe:articulo"/>
<field xpath="@id_articulo"/>
</unique>
<unique name="sku">
<selector xpath="expe:articulo"/>
<field xpath="@sku"/>
</unique>
</element>
<complexType name="epType">
<annotation>
<documentation>peticion de existencias</documentation>
</annotation>
<sequence>
<element name="articulo" type="expe:articuloType" maxOccurs="unbounded"/>
</sequence>
</complexType>
<complexType name="articuloType">
<annotation>
<documentation>articulo</documentation>
</annotation>
<attribute name="id_articulo" type="expe:IdentifierType" use="required"/>
<attribute name="sku" type="expe:skuType" use="required"/>
</complexType>
<simpleType name="IdentifierType">
<annotation>
<documentation>identificador</documentation>
</annotation>
<restriction base="long">
<minInclusive value="0"/>
<maxInclusive value="999999999999999999"/>
<totalDigits value="18"/>
<fractionDigits value="0"/>
</restriction>
</simpleType>
<simpleType name="skuType">
<annotation>
<documentation>sku</documentation>
</annotation>
<restriction base="string">
<minLength value="11"/>
<maxLength value="20"/>
<pattern value="\d{11,20}"/>
</restriction>
</simpleType>
</schema>
and with the following class:
public class XMLValidator
// Instancia singleton
private static XMLValidator validator = new XMLValidator();
* Constructor privado
private XMLValidator()
* Mitodo para acceder a la instancia Singleton de XMLValidator
* @regresa <b>XMLValidator</b> La instancia de esta clase
public static XMLValidator getValidator()
return validator;
public boolean validaEsquema( String docXML, String esquema ) throws Exception
// Establece el URL correcto para el documento de esquema
XSDBuilder builder = new XSDBuilder();
URL url = createURL( esquema );
// Construye el objecto del Schema XML
try
XMLSchema schemadoc = (XMLSchema)builder.build( url );
// Valida el documento XML procesandolo contra el esquema
return validate( docXML, schemadoc );
catch( XMLParseException e )
throw new Exception( "Error al analizar el documento XML: " + e.getMessage() );
catch( Exception e )
throw new Exception( "No es posible validar con el esquema: " + e.getMessage() );
private static boolean validate(String docXML, XMLSchema schemadoc) throws Exception
boolean isValid = false;
// Crea un objeto Parser DOM de XML
DOMParser dp = new DOMParser();
// Establece el objeto Schema XML para la validacion
dp.setXMLSchema( schemadoc );
dp.setValidationMode( XMLParser.SCHEMA_VALIDATION );
dp.setPreserveWhitespace( true );
// Establece la salida de errores
dp.setErrorStream( System.out );
// Recupera los datos del documento XML en un objeto InputStream
byte[] docbytes = docXML.getBytes();
ByteArrayInputStream in = new ByteArrayInputStream( docbytes );
// Parsea el documento y validalo contra el esquema
try
dp.parse( in );
isValid = true;
catch( Exception e )
// Devuelve el documento XML DOM construido durante el parseo
return isValid;
I am able to validate when invoking with the XML and schemas in the parameters...
Problem is that I have to include the attribute xmlns = "http://palaciohierro.com.mx/mde/expe" in my XML doc.
What I really need is to be able to validate de XML doc against a stablished schema, when the XML doc does not include the
xmlns attribute.