Hi I am using Jena and developing a Java Web Application. Where I need to open my existing owl file present on my pc
I wrote the code OntModel base; base =com.hp.hpl.jena.rdf.model.ModelFactory.createOntologyModel(com.hp.hpl.jena.ontology.OntModelSpec.OWL_MEM ); base.read( "locahost:8080/healthcare.owl"); but it gives me this exception ------------------------------------------------------------------------ HTTP Status 500 - ________________________________ type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception com.hp.hpl.jena.shared.JenaException: java.net.UnknownHostException: locahost com.hp.hpl.jena.rdf.arp.JenaReader.read(JenaReader.java:91) com.hp.hpl.jena.rdf.model.impl.ModelCom.read(ModelCom.java:187) com.hp.hpl.jena.ontology.impl.OntModelImpl.readDelegate(OntModelImpl.java:3022) com.hp.hpl.jena.ontology.impl.OntModelImpl.read(OntModelImpl.java:2098) com.hp.hpl.jena.ontology.impl.OntModelImpl.read(OntModelImpl.java:2022) com.mycompany.dataProvider.DAL.diseaseSearch(DAL.java:43) com.mycompany.servlet.GreetingServlet.doPost(GreetingServlet.java:80) javax.servlet.http.HttpServlet.service(HttpServlet.java:641) javax.servlet.http.HttpServlet.service(HttpServlet.java:722) root cause java.net.UnknownHostException: locahost sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) java.lang.reflect.Constructor.newInstance(Unknown Source) sun.net.www.protocol.http.HttpURLConnection$6.run(Unknown Source) java.security.AccessController.doPrivileged(Native Method) sun.net.www.protocol.http.HttpURLConnection.getChainedException(Unknown Source) sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) com.hp.hpl.jena.rdf.arp.JenaReader.read(JenaReader.java:84) com.hp.hpl.jena.rdf.model.impl.ModelCom.read(ModelCom.java:187) com.hp.hpl.jena.ontology.impl.OntModelImpl.readDelegate(OntModelImpl.java:3022) com.hp.hpl.jena.ontology.impl.OntModelImpl.read(OntModelImpl.java:2098) com.hp.hpl.jena.ontology.impl.OntModelImpl.read(OntModelImpl.java:2022) com.mycompany.dataProvider.DAL.diseaseSearch(DAL.java:43) com.mycompany.servlet.GreetingServlet.doPost(GreetingServlet.java:80) javax.servlet.http.HttpServlet.service(HttpServlet.java:641) javax.servlet.http.HttpServlet.service(HttpServlet.java:722) root cause java.net.UnknownHostException: locahost java.net.PlainSocketImpl.connect(Unknown Source) java.net.SocksSocketImpl.connect(Unknown Source) java.net.Socket.connect(Unknown Source) java.net.Socket.connect(Unknown Source) sun.net.NetworkClient.doConnect(Unknown Source) sun.net.www.http.HttpClient.openServer(Unknown Source) sun.net.www.http.HttpClient.openServer(Unknown Source) sun.net.www.http.HttpClient.(Unknown Source) sun.net.www.http.HttpClient.New(Unknown Source) sun.net.www.http.HttpClient.New(Unknown Source) sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source) sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source) sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source) sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) sun.net.www.protocol.http.HttpURLConnection.getHeaderField(Unknown Source) java.net.URLConnection.getContentEncoding(Unknown Source) com.hp.hpl.jena.rdf.arp.JenaReader.read(JenaReader.java:82) com.hp.hpl.jena.rdf.model.impl.ModelCom.read(ModelCom.java:187) com.hp.hpl.jena.ontology.impl.OntModelImpl.readDelegate(OntModelImpl.java:3022) com.hp.hpl.jena.ontology.impl.OntModelImpl.read(OntModelImpl.java:2098) com.hp.hpl.jena.ontology.impl.OntModelImpl.read(OntModelImpl.java:2022) com.mycompany.dataProvider.DAL.diseaseSearch(DAL.java:43) com.mycompany.servlet.GreetingServlet.doPost(GreetingServlet.java:80) javax.servlet.http.HttpServlet.service(HttpServlet.java:641) javax.servlet.http.HttpServlet.service(HttpServlet.java:722) note The full stack trace of the root cause is available in the Apache Tomcat/7.0.11 logs. ________________________________ Apache Tomcat/7.0.11 -----------------------------------------------------------------------------
