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jenaʹÓÃÖгöÏֵĴíÎó£¬Âé·³´ó¼Ò½â´ðһϠÎÒÒѾ­Äܹ»ÔÚjenaÖÐÕÒµ½Ä¿±êÀàµÄ¸¸ÀࣨÊä³öµÄ×îºó¼¸ÐУ©£¬¿ÉÊÇÔÚÊä³ö½á¹ûÇ°Ã棬ȴ³öÏÖÏÂÃæµÄÌáʾ£º Çë¸÷λµÄ¸ßÊÖ¸ø½â´ðһϣ¬¸ÃÔõôÑù¸Ä½øÎҵijÌÐò²ÅÄܲ»Êä³ö´íÎóÌáʾ ---------- Java (No Parameter) ---------- WARN [main] (OntDocumentManager.java:1004) - An error occurred while attempting to read from <http://www.w3.org/2002/07/owl> (re-directed via the document mgr from <http://www.w3.org/2002/07/owl>). Error was 'rethrew: null'. java.io.IOException  at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:775)  at com.hp.hpl.jena.ontology.OntDocumentManager.read(OntDocumentManager.java:971)  at com.hp.hpl.jena.ontology.OntDocumentManager.loadImport(OntDocumentManager.java:919)  at com.hp.hpl.jena.ontology.OntDocumentManager.loadImports(OntDocumentManager.java:686)  at com.hp.hpl.jena.ontology.OntDocumentManager.loadImports(OntDocumentManager.java:635)  at com.hp.hpl.jena.ontology.impl.OntModelImpl.read(OntModelImpl.java:1908)  at com.hp.hpl.jena.ontology.impl.OntModelImpl.read(OntModelImpl.java:1846)  at Test.main(Test.java:18) Caused by: java.net.ConnectException: Connection timed out: connect  at java.net.PlainSocketImpl.socketConnect(Native Method)  at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)  at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)  at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)  at java.net.Socket.connect(Socket.java:505)  at java.net.Socket.connect(Socket.java:455)  at sun.net.NetworkClient.doConnect(NetworkClient.java:157)  at sun.net.www.http.HttpClient.openServer(HttpClient.java:371)  at sun.net.www.http.HttpClient.openServer(HttpClient.java:483)  at sun.net.www.http.HttpClient.<init>(HttpClient.java:220)  at sun.net.www.http.HttpClient.New(HttpClient.java:293)  at sun.net.www.http.HttpClient.New(HttpClient.java:305)  at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:698)  at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:650)  at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:575)  at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:799)  at sun.net.www.protocol.http.HttpURLConnection.getHeaderField(HttpURLConnection.java:1670)  at java.net.URLConnection.getContentEncoding(URLConnection.java:489)  at com.hp.hpl.jena.ontology.OntDocumentManager.read(OntDocumentManager.java:968)  ... 6 more com.hp.hpl.jena.shared.JenaException: rethrew: null  at com.hp.hpl.jena.ontology.OntDocumentManager.read(OntDocumentManager.java:978)  at com.hp.hpl.jena.ontology.OntDocumentManager.loadImport(OntDocumentManager.java:919)  at com.hp.hpl.jena.ontology.OntDocumentManager.loadImports(OntDocumentManager.java:686)  at com.hp.hpl.jena.ontology.OntDocumentManager.loadImports(OntDocumentManager.java:635)  at com.hp.hpl.jena.ontology.impl.OntModelImpl.read(OntModelImpl.java:1908)  at com.hp.hpl.jena.ontology.impl.OntModelImpl.read(OntModelImpl.java:1846)  at Test.main(Test.java:18) Caused by: java.io.IOException  at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:775)  at com.hp.hpl.jena.ontology.OntDocumentManager.read(OntDocumentManager.java:971)  ... 6 more Caused by: java.net.ConnectException: Connection timed out: connect  at java.net.PlainSocketImpl.socketConnect(Native Method)  at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)  at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)  at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)  at java.net.Socket.connect(Socket.java:505)  at java.net.Socket.connect(Socket.java:455)  at sun.net.NetworkClient.doConnect(NetworkClient.java:157)  at sun.net.www.http.HttpClient.openServer(HttpClient.java:371)  at sun.net.www.http.HttpClient.openServer(HttpClient.java:483)  at sun.net.www.http.HttpClient.<init>(HttpClient.java:220)  at sun.net.www.http.HttpClient.New(HttpClient.java:293)  at sun.net.www.http.HttpClient.New(HttpClient.java:305)  at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:698)  at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:650)  at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:575)  at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:799)  at sun.net.www.protocol.http.HttpURLConnection.getHeaderField(HttpURLConnection.java:1670)  at java.net.URLConnection.getContentEncoding(URLConnection.java:489)  at com.hp.hpl.jena.ontology.OntDocumentManager.read(OntDocumentManager.java:968)  ... 6 more http://www.w3.org/2002/07/owl#Thing http://www.w3.org/2000/01/rdf-schema#Resource http://www.xfront.com/owl/ontologies/camera/#Camera http://www.xfront.com/owl/ontologies/camera/#PurchaseableItem Output completed (29 sec consumed) - Normal Termination ÉÏÃæºìÉ«µÄ¾ÍÊÇÎÒÒªµÄ½á¹û ÎÒµÄÔ´³ÌÐò¾ÍÊÇ£º [color=#0099ff] import com.hp.hpl.jena.rdf.model.*; import com.hp.hpl.jena.rdf.arp.*; import java.io.*; import com.hp.hpl.jena.ontology.*; import com.hp.hpl.jena.rdql.* ; import java.util.*; import java.util.Iterator; public class Test {  public static void main(String[] args)  {   OntModelSpec s = new OntModelSpec( OntModelSpec.OWL_MEM_RULE_INF );   OntDocumentManager dm = new OntDocumentManager();   dm.addAltEntry( "http://www.xfront.com/owl/ontologies/camera/",       "file:\\c:\\camera.owl");   s.setDocumentManager(dm);   OntModel m = ModelFactory.createOntologyModel(s,null);   m.read( "http://www.xfront.com/owl/ontologies/camera/" );   try{    OntClass on = m.getOntClass("http://www.xfront.com/owl/ontologies/camera/#Digital");    Iterator iter = on.listSuperClasses();    for( ; iter.hasNext();)    {     OntClass te = (OntClass) iter.next();     System.out.println(te.getURI());    }             } catch (Exception ex)         {             System.err.println("Exception: "+ex) ;             ex.printStackTrace(System.err) ;         }  } } [/color]    Êղؠ  ·ÖÏí   ¶¥(0)