计算机科学论坛--新手Jena问题求助！！

贴子主题：新手Jena问题求助！！

本主题类别:

《An Introduction to RDF and the Jena RDF API》中 Tutorial 4的源代码无法运行，报错如下：
Exception in thread "main" java.lang.NoClassDefFoundError: com/hp/hpl/jena/iri/IRIFactory
at com.hp.hpl.jena.xmloutput.impl.BaseXMLWriter.<clinit>(BaseXMLWriter.java:469)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:164)
at com.hp.hpl.jena.rdf.model.impl.RDFWriterFImpl.getWriter(RDFWriterFImpl.java:113)
at com.hp.hpl.jena.rdf.model.impl.RDFWriterFImpl.getWriter(RDFWriterFImpl.java:98)
at com.hp.hpl.jena.rdf.model.impl.ModelCom.getWriter(ModelCom.java:230)
at com.hp.hpl.jena.rdf.model.impl.ModelCom.write(ModelCom.java:266)
at jena.examples.rdf.Tutorial04.main(Tutorial04.java:48)
Tutorial 4的源码如下：
/*
* (c) Copyright 2003, 2004, Hewlett-Packard Development Company, LP
* All rights reserved.
* [See end of file]
* $Id: Tutorial04.java,v 1.3 2005/10/06 17:49:05 andy_seaborne Exp $
*/
package jena.examples.rdf ;

import com.hp.hpl.jena.rdf.model.*;
import com.hp.hpl.jena.vocabulary.*;

/** Tutorial 4 - create a model and write it in XML form to standard out
*
* @author  bwm - updated by Kers/Daniel
* @version Release='$Name:  $' Revision='$Revision: 1.3 $' Date='$Date: 2005/10/06 17:49:05 $'
*/
public class Tutorial04 extends Object {

    // some definitions
    static String tutorialURI  = "http://hostname/rdf/tutorial/";
    static String briansName   = "Brian McBride";
    static String briansEmail1 = "brian_mcbride@hp.com";
    static String briansEmail2 = "brian_mcbride@hpl.hp.com";
    static String title        = "An Introduction to RDF and the Jena API";
    static String date         = "23/01/2001";

    public static void main (String args[]) {

        // some definitions
        String personURI    = "http://somewhere/JohnSmith";
        String givenName    = "John";
        String familyName   = "Smith";
        String fullName     = givenName + " " + familyName;
        // create an empty model
        Model model = ModelFactory.createDefaultModel();

        // create the resource
        //   and add the properties cascading style
        Resource johnSmith
          = model.createResource(personURI)
                 .addProperty(VCARD.FN, fullName)
                 .addProperty(VCARD.N,
                              model.createResource()
                                   .addProperty(VCARD.Given, givenName)
                                   .addProperty(VCARD.Family, familyName));

        // now write the model in XML form to a file
        model.write(System.out);
    }
}
就是最后那句model.write(System.out);的问题，我用的是Jena 2.4，下载解压后，我已经把\Jena-2.4\lib下的所有jar都加入Eclipse3.2.0的工程Java构建路径中了。
请问各位怎么解决？谢谢！


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