跪求解释！！jena读取本体文件发生RDFDefaultErrorHandler.java:44错误，网上的解决方案多为地址问题，但是调整了多次地址仍不能运行，是否可能是本体文件的问题呢？但是本体文件是protege的examples本体文件，也不可能有问题啊。跪求点播！！！
代码如下：
package jena;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
//import org.mindswap.pellet.jena.PelletReasonerFactory;
import com.hp.hpl.jena.ontology.OntModel;
import com.hp.hpl.jena.rdf.model.ModelFactory;
public class jena {
public static void main(String args[]) throws FileNotFoundException
{
OntModel ontModel = ModelFactory.createOntologyModel();
ontModel.read((new FileInputStream("D:/pizza.owl")),null);
}
}
console错误为：
ERROR [main] (RDFDefaultErrorHandler.java:44) - http://protege.stanford.edu/plugins/owl/protege(line 1 column 50): White spaces are required between publicId and systemId.
WARN [main] (OntDocumentManager.java:1137) - An error occurred while attempting to read from http://protege.stanford.edu/plugins/owl/protege. Msg was 'rethrew: org.xml.sax.SAXParseException; systemId: http://protege.stanford.edu/plugins/owl/protege; lineNumber: 1; columnNumber: 50; White spaces are required between publicId and systemId.'.
org.xml.sax.SAXParseException; systemId: http://protege.stanford.edu/plugins/owl/protege; lineNumber: 1; columnNumber: 50; White spaces are required between publicId and systemId.
at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unkn
at org.apache.xerces.impl.XMLDocumentScannerImpl$PrologDispatcher.dispatch(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at com.hp.hpl.jena.rdf.arp.impl.RDFXMLParser.parse(RDFXMLParser.java:106)
...
at com.hp.hpl.jena.util.FileManager.readModel(FileManager.java:316)
at com.hp.hpl.jena.ontology.OntDocumentManager.read(OntDocumentManager.java:1133)
at com.hp.hpl.jena.ontology.OntDocumentManager$1.readModel(OntDocumentManager.java:1099)
at com.hp.hpl.jena.rdf.model.impl.ModelMakerImpl.getModel(ModelMakerImpl.java:105)
at com.hp.hpl.jena.ontology.OntDocumentManager.fetchLoadedImportModel(OntDocumentManager.java:1103)
at com.hp.hpl.jena.ontology.OntDocumentManager.fetchPossiblyCachedImpo...
at com.hp.hpl.jena.ontology.impl.OntModelImpl.read(OntModelImpl.java:2046)
at jena.jena.main(jena.java:18)
com.hp.hpl.jena.shared.JenaException: rethrew: org.xml.sax.SAXParseException; systemId: http://protege.stanford.edu/plugins/owl/protege; lineNumber: 1; columnNumber: 50; White spaces are required between publicId and systemId.
at com.hp.hpl.jena.rdf.model.impl.RDFDefaultErrorHandler.fatalError(RDFDefaultErrorHandler.java:45)
at com.hp.hpl.jena.rdf.arp.impl.ARPSaxErrorHandler.fatalError(ARPSaxErrorHandler.java:35)
at com.hp.hpl.jena.rdf.arp.impl.XMLHandler.warning(XMLHandler.java:214)
at com.hp.hpl.jena.rdf.arp.impl.XMLHandler.fatalError(XMLHandler.java:241)
at org.apache.xerces.util.ErrorHandlerWrapper.fatalError(Unknown Source)
...
at org.apache.xerces.impl.XMLDocumentScannerImpl.scanDoctypeDecl(Unknown Source)
at org.apache.xerces.impl.XMLDocumentScannerImpl$PrologDispatcher.dispatch(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at com.hp.hpl.jena.rdf.arp.impl.RDFXMLParser.parse(RDFXMLParser.java:106)
....
at jena.jena.main(jena.java:18)
Caused by: org.xml.sax.SAXParseException; systemId: http://protege.stanford.edu/plugins/owl/protege; lineNumber: 1; columnNumber: 50; White spaces are required between publicId and systemId.
at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)
... 30 more
本体文件为：
<?xml version="1.0"?>
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:swrlb="http://www.w3.org/2003/11/swrlb#"
xmlns:protege="http://protege.stanford.edu/plugins/owl/protege#"
xmlns:swrla="http://swrl.stanford.edu/ontologies/3.3/swrla.owl#"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
xmlns:sqwrl="http://sqwrl.stanford.edu/ontologies/built-ins/3.4/sqwrl.owl#"
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns="http://www.co-ode.org/ontologies/pizza/2005/10/18/pizza.owl#"
xmlns:owl="http://www.w3.org/2002/07/owl#"
xmlns:xsp="http://www.owl-ontologies.com/2005/08/07/xsp.owl#"
xmlns:swrl="http://www.w3.org/2003/11/swrl#"
xmlns:daml="http://www.daml.org/2001/03/daml+oil#"
xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
xml:base="http://www.co-ode.org/ontologies/pizza/2005/10/18/pizza.owl">
An example ontology that contains all constructs required for the various versions of the Pizza Tutorial run by Manchester University (see http://www.co-ode.org/resources/tutorials/)/rdfs:comment
>version 1.3/owl:versionInfo
>en/protege:defaultLanguage
/owl:Ontology
owl:Class
owl:Restriction
owl:onProperty
/owl:onProperty
>3/owl:minCardinality
/owl:Restriction
/owl:intersectionOf
/owl:Class
owl:Class
owl:Restriction
owl:onProperty...字数限制。。
自己已经解决，关键在于 本体文件的格式问题，protege中的save as自动存储为RDF/XML-ABBREV，将该格式转为RDF/XML，再读取即可！