Discussion :

[naima2005]

bonjour,
j'ai créé un service web qui permet d'accéder à une ontologie et l'interroger via SPARQL:

Code :

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/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
 
package com.WS;
 
import com.hp.hpl.jena.vocabulary.RDF;
import com.hp.hpl.jena.sparql.util.IndentedWriter;
import com.hp.hpl.jena.query.*;
import com.hp.hpl.jena.rdf.model.InfModel;
import com.hp.hpl.jena.rdf.model.Model;
import com.hp.hpl.jena.rdf.model.ModelFactory;
import com.hp.hpl.jena.rdf.model.Resource;
import com.hp.hpl.jena.reasoner.Reasoner;
//import javax.jws.WebMethod;
//import javax.jws.WebParam;
import org.mindswap.pellet.jena.PelletReasonerFactory;
//import javax.jws.WebService;
import javax.jws.*;
 
/**
 *
 * @author naima
 */
@WebService()
public class OntolgyQuery {
public static String Onto_OWL_file = "http://localhost/informatique.owl";
public static final String NL = System.getProperty("line.separator") ;
    /**
     * Web service operation
     */
 
    @WebMethod(operationName = "GenerateTerms")
    public String[] GenerateTerms(@WebParam(name = "Keyword")
    String Keyword) {
        String [] NewTerms =new String[10];
 
              // create Pellet reasoner
        Reasoner reasoner = PelletReasonerFactory.theInstance().create();
 
        // create an empty model
        Model emptyModel = ModelFactory.createDefaultModel( );
 
        // create an inferencing model using Pellet reasoner
        InfModel m = ModelFactory.createInfModel( reasoner, emptyModel );
 
        // read the file
        m.read( Onto_OWL_file );
 
        // Model m = ModelFactory.createDefaultModel();
 
        // use the file manager to read an RDF document into the model
 
        System.out.println( "We have loaded a model with no. statements = " + m.size() );
    	String info ="http://www.owl-ontologies.com/Ontology1260701617.owl#";
    	String prolog1 = "PREFIX info: <"+info+">" ;
        String prolog2 = "PREFIX rdf: <"+RDF.getURI()+">" ;
        // Query string.
       String queryString = prolog1 + NL + prolog2 + NL +
        "SELECT ?proto  WHERE {?proto rdf:type info:"+ Keyword +" }" ;
 
        Query query = QueryFactory.create(queryString) ;
        // Print with line numbers
        query.serialize(new IndentedWriter(System.out,true)) ;
        System.out.println() ;
        // Create a single execution of this query, apply to a model
        // which is wrapped up as a Dataset
 
        QueryExecution qexec = QueryExecutionFactory.create(query, m) ;
 
        try {
            // Assumption: it's a SELECT query.
            ResultSet rs = qexec.execSelect() ;
            // The order of results is undefined.
            int i=0;
            for ( ; rs.hasNext() ; )
            {
                QuerySolution rb = rs.nextSolution() ;
                // Get title - variable names do not include the '?' (or '$')
               // RDFNode y = rb.get("proto");
                //System.out.print("uri : "+y+"---  ");
                Resource z = (Resource) rb.getResource("proto");
                System.out.println(z.getLocalName());
                if(i<10){
                NewTerms[i]=z.getLocalName();
                i++;
                }
            }
 
        }
 
        finally
        {
            // QueryExecution objects should be closed to free any system resources
            qexec.close() ;
        }
 
        return NewTerms;
    }
 
}

pendant l'execution il me return l'erreur suivante:

Code :

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Service invocation threw an exception with message : null; Refer to the server log for more details
 
Détails de l'exception : java.lang.reflect.InvocationTargetException
javax.servlet.ServletException: java.lang.reflect.InvocationTargetException at com.sun.enterprise.webservice.monitoring.WebServiceTesterServlet.doPost(WebServiceTesterServlet.java:345) at com.sun.enterprise.webservice.monitoring.WebServiceTesterServlet.invoke(WebServiceTesterServlet.java:121) at com.sun.enterprise.webservice.JAXWSServlet.doPost(JAXWSServlet.java:165) at javax.servlet.http.HttpServlet.service(HttpServlet.java:738) at javax.servlet.http.HttpServlet.service(HttpServlet.java:831) at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:411) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:290) at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:271) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:202) at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632) at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577) at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:94) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:206) at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632) at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:571) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1080) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:150) at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632) at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:571) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1080) at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:272) at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:637) at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:568) at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(DefaultProcessorTask.java:813) at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcessorTask(DefaultReadTask.java:341) at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:263) at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:214) at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:265) at com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run(SSLWorkerThread.java:106) Caused by: java.lang.reflect.InvocationTargetException
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) 
at com.sun.enterprise.webservice.monitoring.WebServiceTesterServlet.doPost(WebServiceTesterServlet.java:316) ... 30 more Caused by: javax.xml.ws.soap.SOAPFaultException: com.sun.msv.datatype.xsd.datetime.BigTimeDurationValueType.(Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigDecimal;)V at com.sun.xml.ws.fault.SOAP11Fault.getProtocolException(SOAP11Fault.java:188) at com.sun.xml.ws.fault.SOAPFaultBuilder.createException(SOAPFaultBuilder.java:116) at com.sun.xml.ws.client.sei.SyncMethodHandler.invoke(SyncMethodHandler.java:119) at com.sun.xml.ws.client.sei.SyncMethodHandler.invoke(SyncMethodHandler.java:89) at com.sun.xml.ws.client.sei.SEIStub.invoke(SEIStub.java:118) at $Proxy100.generateTerms(Unknown Source) ... 35 more Caused by: java.lang.NoSuchMethodError: com.sun.msv.datatype.xsd.datetime.BigTimeDurationValueType.(Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigDecimal;)V at com.sun.msv.datatype.xsd.datetime.TimeDurationFactory.create(TimeDurationFactory.java:34) at org.mindswap.pellet.datatypes.XSDDuration.(XSDDuration.java:32) at org.mindswap.pellet.datatypes.DatatypeReasoner.(DatatypeReasoner.java:95) at org.mindswap.pellet.ABox.(ABox.java:206) at org.mindswap.pellet.KnowledgeBase.clear(KnowledgeBase.java:548) at org.mindswap.pellet.KnowledgeBase.(KnowledgeBase.java:428) at org.mindswap.pellet.jena.PelletInfGraph.(PelletInfGraph.java:96) at org.mindswap.pellet.jena.PelletReasoner.bind(PelletReasoner.java:95) at org.mindswap.pellet.jena.PelletReasoner.bind(PelletReasoner.java:53) at com.hp.hpl.jena.rdf.model.ModelFactory.createInfModel(ModelFactory.java:293) at com.WS.OntolgyQuery.GenerateTerms(OntolgyQuery.java:46) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.sun.enterprise.webservice.InstanceResolverImpl$1.invoke(InstanceResolverImpl.java:112) at com.sun.xml.ws.server.InvokerTube$2.invoke(InvokerTube.java:146) at com.sun.xml.ws.server.sei.EndpointMethodHandler.invoke(EndpointMethodHandler.java:257) at com.sun.xml.ws.server.sei.SEIInvokerTube.processRequest(SEIInvokerTube.java:93) at com.sun.xml.ws.api.pipe.Fiber.__doRun(Fiber.java:595) at com.sun.xml.ws.api.pipe.Fiber._doRun(Fiber.java:554) at com.sun.xml.ws.api.pipe.Fiber.doRun(Fiber.java:539) at com.sun.xml.ws.api.pipe.Fiber.runSync(Fiber.java:436) at com.sun.xml.ws.api.pipe.helper.AbstractTubeImpl.process(AbstractTubeImpl.java:106) at com.sun.enterprise.webservice.MonitoringPipe.process(MonitoringPipe.java:147) at com.sun.xml.ws.api.pipe.helper.PipeAdapter.processRequest(PipeAdapter.java:115) at com.sun.xml.ws.api.pipe.Fiber.__doRun(Fiber.java:595) at com.sun.xml.ws.api.pipe.Fiber._doRun(Fiber.java:554) at com.sun.xml.ws.api.pipe.Fiber.doRun(Fiber.java:539) at com.sun.xml.ws.api.pipe.Fiber.runSync(Fiber.java:436) at com.sun.xml.ws.api.pipe.helper.AbstractTubeImpl.process(AbstractTubeImpl.java:106) at com.sun.enterprise.webservice.CommonServerSecurityPipe.processRequest(CommonServerSecurityPipe.java:218) at com.sun.enterprise.webservice.CommonServerSecurityPipe.process(CommonServerSecurityPipe.java:129) at com.sun.xml.ws.api.pipe.helper.PipeAdapter.processRequest(PipeAdapter.java:115) at com.sun.xml.ws.api.pipe.Fiber.__doRun(Fiber.java:595) at com.sun.xml.ws.api.pipe.Fiber._doRun(Fiber.java:554) at com.sun.xml.ws.api.pipe.Fiber.doRun(Fiber.java:539) at com.sun.xml.ws.api.pipe.Fiber.runSync(Fiber.java:436) at com.sun.xml.ws.server.WSEndpointImpl$2.process(WSEndpointImpl.java:243) at com.sun.xml.ws.transport.http.HttpAdapter$HttpToolkit.handle(HttpAdapter.java:444) at com.sun.xml.ws.transport.http.HttpAdapter.handle(HttpAdapter.java:244) at com.sun.xml.ws.transport.http.servlet.ServletAdapter.handle(ServletAdapter.java:135) at com.sun.enterprise.webservice.JAXWSServlet.doPost(JAXWSServlet.java:176) ... 28 more

est ce quelqu'un peut m'aider s'il vous plait.

merci d'avance

[amina.5]

moi aussi je rencontre le meme probleme

[sihem.usthb]

Bonjour,

J'ai exactement le même problème , la fonction s' exécute normalement dans une application java mais quand j'implémente dans un service Web elle
m 'affiche le même message d'erreur que vous avez cité
S'il vous plait si vous avez réglé ce problème est ce que vous pouvez partager avec nous la solution, je suis sur qu'il en a encore beaucoup d'autres débutants qui ont aussi le même problème .
Je vous remercie d'avance