OWL API 静默导入
OWL API Silent Imports
我无法使用 OWL API 加载 ontology，因为它缺少一些导入。我正在 "silent" 使用 OWLOntologyLoaderConfiguration 导入，但我仍然遇到错误。
我的代码：
OWLOntologyManager manager = OWLManager.createOWLOntologyManager();
//set silent imports
OWLOntologyLoaderConfiguration config = new OWLOntologyLoaderConfiguration();
config.setMissingImportHandlingStrategy(MissingImportHandlingStrategy.SILENT);
manager.setOntologyLoaderConfiguration(config);
File f = new File(path);
OWLOntology o = manager.loadOntologyFromOntologyDocument(f);
错误：
Exception in thread "main" org.semanticweb.owlapi.model.UnloadableImportException: Could not load imported ontology: <https://ci.mines-stetienne.fr/pep/> Cause: https://ci.mines-stetienne.fr/pep/
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.makeLoadImportRequest(OWLOntologyManagerImpl.java:1605)
at org.semanticweb.owlapi.rdf.rdfxml.parser.TripleHandlers$TPImportsHandler.handleTriple(TripleHandlers.java:1568)
at org.semanticweb.owlapi.rdf.rdfxml.parser.TripleHandlers$HandlerAccessor.handleStreaming(TripleHandlers.java:200)
at org.semanticweb.owlapi.rdf.rdfxml.parser.OWLRDFConsumer.statementWithResourceValue(OWLRDFConsumer.java:1507)
at org.semanticweb.owlapi.rdf.rdfxml.parser.RDFParser.statementWithResourceValue(RDFParser.java:365)
at org.semanticweb.owlapi.rdf.rdfxml.parser.EmptyPropertyElement.startElement(StartRDF.java:253)
at org.semanticweb.owlapi.rdf.rdfxml.parser.PropertyElementList.startElement(StartRDF.java:692)
at org.semanticweb.owlapi.rdf.rdfxml.parser.RDFParser.startElement(RDFParser.java:196)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:509)
at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:182)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:351)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2784)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:602)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:112)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:505)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:842)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:771)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:643)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl.parse(SAXParserImpl.java:327)
at org.semanticweb.owlapi.rdf.rdfxml.parser.RDFParser.parse(RDFParser.java:140)
at org.semanticweb.owlapi.rdf.rdfxml.parser.RDFXMLParser.parse(RDFXMLParser.java:73)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyFactoryImpl.loadOWLOntology(OWLOntologyFactoryImpl.java:212)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.loadOntology(OWLOntologyManagerImpl.java:1035)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.loadOntology(OWLOntologyManagerImpl.java:947)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.loadImports(OWLOntologyManagerImpl.java:1563)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.makeLoadImportRequest(OWLOntologyManagerImpl.java:1599)
at org.semanticweb.owlapi.rdf.rdfxml.parser.TripleHandlers$TPImportsHandler.handleTriple(TripleHandlers.java:1568)
at org.semanticweb.owlapi.rdf.rdfxml.parser.TripleHandlers$HandlerAccessor.handleStreaming(TripleHandlers.java:200)
at org.semanticweb.owlapi.rdf.rdfxml.parser.OWLRDFConsumer.statementWithResourceValue(OWLRDFConsumer.java:1507)
at org.semanticweb.owlapi.rdf.rdfxml.parser.RDFParser.statementWithResourceValue(RDFParser.java:365)
at org.semanticweb.owlapi.rdf.rdfxml.parser.EmptyPropertyElement.startElement(StartRDF.java:253)
at org.semanticweb.owlapi.rdf.rdfxml.parser.PropertyElementList.startElement(StartRDF.java:692)
at org.semanticweb.owlapi.rdf.rdfxml.parser.RDFParser.startElement(RDFParser.java:196)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:509)
at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:182)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:351)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2784)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:602)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:112)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:505)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:842)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:771)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:643)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl.parse(SAXParserImpl.java:327)
at org.semanticweb.owlapi.rdf.rdfxml.parser.RDFParser.parse(RDFParser.java:140)
at org.semanticweb.owlapi.rdf.rdfxml.parser.RDFXMLParser.parse(RDFXMLParser.java:73)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyFactoryImpl.loadOWLOntology(OWLOntologyFactoryImpl.java:212)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.loadOntology(OWLOntologyManagerImpl.java:1035)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.loadOntology(OWLOntologyManagerImpl.java:947)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.loadOntology(OWLOntologyManagerImpl.java:903)
at aml.ontology.Ontology.<init>(Ontology.java:170)
at aml.Main.main(Main.java:87)
Caused by: org.semanticweb.owlapi.io.OWLOntologyCreationIOException: https://ci.mines-stetienne.fr/pep/
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyFactoryImpl.loadOWLOntology(OWLOntologyFactoryImpl.java:221)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.loadOntology(OWLOntologyManagerImpl.java:1035)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.loadOntology(OWLOntologyManagerImpl.java:947)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.loadImports(OWLOntologyManagerImpl.java:1563)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.makeLoadImportRequest(OWLOntologyManagerImpl.java:1599)
... 55 more
Caused by: java.io.FileNotFoundException: https://ci.mines-stetienne.fr/pep/
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at sun.net.www.protocol.http.HttpURLConnection.run(HttpURLConnection.java:1944)
at sun.net.www.protocol.http.HttpURLConnection.run(HttpURLConnection.java:1939)
at java.security.AccessController.doPrivileged(Native Method)
at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1938)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1508)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1492)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:263)
at org.semanticweb.owlapi.io.AbstractOWLParser.getInputStreamFromContentEncoding(AbstractOWLParser.java:167)
at org.semanticweb.owlapi.io.AbstractOWLParser.getInputStream(AbstractOWLParser.java:127)
at org.semanticweb.owlapi.io.AbstractOWLParser.getInputSource(AbstractOWLParser.java:234)
at org.semanticweb.owlapi.rdf.rdfxml.parser.RDFXMLParser.parse(RDFXMLParser.java:72)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyFactoryImpl.loadOWLOntology(OWLOntologyFactoryImpl.java:212)
... 59 more
Caused by: java.io.FileNotFoundException: https://ci.mines-stetienne.fr/pep/
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1890)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1492)
at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:347)
at org.semanticweb.owlapi.io.AbstractOWLParser.getInputStream(AbstractOWLParser.java:103)
... 62 more
OWLOntologyLoaderConfiguration class 使用（像大多数 OWL API 一样）防御性复制模式，所以当你调用 setter （比如 setMissingImportHandlingStrategy)，它复制当前配置并在副本上设置策略，然后 returns（基本上是防御性复制生成器模式）。因此，您必须将此复制的配置传递给 OWLOntologyManager，如下所示：
OWLOntologyManager manager = OWLManager.createOWLOntologyManager();
//set silent imports
OWLOntologyLoaderConfiguration config = new OWLOntologyLoaderConfiguration();
config = config.setMissingImportHandlingStrategy(MissingImportHandlingStrategy.SILENT);
manager.setOntologyLoaderConfiguration(config);
另一种选择是直接在 OWLOntologyManager 实例中存在的默认加载程序配置上设置它，如（我的项目就是这样做的）：
manager.getOntologyConfigurator().setMissingImportHandlingStrategy(MissingImportHandlingStrategy.SILENT);
我无法使用 OWL API 加载 ontology，因为它缺少一些导入。我正在 "silent" 使用 OWLOntologyLoaderConfiguration 导入，但我仍然遇到错误。
我的代码：
OWLOntologyManager manager = OWLManager.createOWLOntologyManager();
//set silent imports
OWLOntologyLoaderConfiguration config = new OWLOntologyLoaderConfiguration();
config.setMissingImportHandlingStrategy(MissingImportHandlingStrategy.SILENT);
manager.setOntologyLoaderConfiguration(config);
File f = new File(path);
OWLOntology o = manager.loadOntologyFromOntologyDocument(f);
错误：
Exception in thread "main" org.semanticweb.owlapi.model.UnloadableImportException: Could not load imported ontology: <https://ci.mines-stetienne.fr/pep/> Cause: https://ci.mines-stetienne.fr/pep/
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.makeLoadImportRequest(OWLOntologyManagerImpl.java:1605)
at org.semanticweb.owlapi.rdf.rdfxml.parser.TripleHandlers$TPImportsHandler.handleTriple(TripleHandlers.java:1568)
at org.semanticweb.owlapi.rdf.rdfxml.parser.TripleHandlers$HandlerAccessor.handleStreaming(TripleHandlers.java:200)
at org.semanticweb.owlapi.rdf.rdfxml.parser.OWLRDFConsumer.statementWithResourceValue(OWLRDFConsumer.java:1507)
at org.semanticweb.owlapi.rdf.rdfxml.parser.RDFParser.statementWithResourceValue(RDFParser.java:365)
at org.semanticweb.owlapi.rdf.rdfxml.parser.EmptyPropertyElement.startElement(StartRDF.java:253)
at org.semanticweb.owlapi.rdf.rdfxml.parser.PropertyElementList.startElement(StartRDF.java:692)
at org.semanticweb.owlapi.rdf.rdfxml.parser.RDFParser.startElement(RDFParser.java:196)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:509)
at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:182)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:351)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2784)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:602)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:112)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:505)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:842)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:771)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:643)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl.parse(SAXParserImpl.java:327)
at org.semanticweb.owlapi.rdf.rdfxml.parser.RDFParser.parse(RDFParser.java:140)
at org.semanticweb.owlapi.rdf.rdfxml.parser.RDFXMLParser.parse(RDFXMLParser.java:73)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyFactoryImpl.loadOWLOntology(OWLOntologyFactoryImpl.java:212)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.loadOntology(OWLOntologyManagerImpl.java:1035)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.loadOntology(OWLOntologyManagerImpl.java:947)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.loadImports(OWLOntologyManagerImpl.java:1563)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.makeLoadImportRequest(OWLOntologyManagerImpl.java:1599)
at org.semanticweb.owlapi.rdf.rdfxml.parser.TripleHandlers$TPImportsHandler.handleTriple(TripleHandlers.java:1568)
at org.semanticweb.owlapi.rdf.rdfxml.parser.TripleHandlers$HandlerAccessor.handleStreaming(TripleHandlers.java:200)
at org.semanticweb.owlapi.rdf.rdfxml.parser.OWLRDFConsumer.statementWithResourceValue(OWLRDFConsumer.java:1507)
at org.semanticweb.owlapi.rdf.rdfxml.parser.RDFParser.statementWithResourceValue(RDFParser.java:365)
at org.semanticweb.owlapi.rdf.rdfxml.parser.EmptyPropertyElement.startElement(StartRDF.java:253)
at org.semanticweb.owlapi.rdf.rdfxml.parser.PropertyElementList.startElement(StartRDF.java:692)
at org.semanticweb.owlapi.rdf.rdfxml.parser.RDFParser.startElement(RDFParser.java:196)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:509)
at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:182)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:351)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2784)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:602)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:112)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:505)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:842)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:771)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:643)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl.parse(SAXParserImpl.java:327)
at org.semanticweb.owlapi.rdf.rdfxml.parser.RDFParser.parse(RDFParser.java:140)
at org.semanticweb.owlapi.rdf.rdfxml.parser.RDFXMLParser.parse(RDFXMLParser.java:73)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyFactoryImpl.loadOWLOntology(OWLOntologyFactoryImpl.java:212)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.loadOntology(OWLOntologyManagerImpl.java:1035)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.loadOntology(OWLOntologyManagerImpl.java:947)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.loadOntology(OWLOntologyManagerImpl.java:903)
at aml.ontology.Ontology.<init>(Ontology.java:170)
at aml.Main.main(Main.java:87)
Caused by: org.semanticweb.owlapi.io.OWLOntologyCreationIOException: https://ci.mines-stetienne.fr/pep/
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyFactoryImpl.loadOWLOntology(OWLOntologyFactoryImpl.java:221)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.loadOntology(OWLOntologyManagerImpl.java:1035)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.loadOntology(OWLOntologyManagerImpl.java:947)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.loadImports(OWLOntologyManagerImpl.java:1563)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.makeLoadImportRequest(OWLOntologyManagerImpl.java:1599)
... 55 more
Caused by: java.io.FileNotFoundException: https://ci.mines-stetienne.fr/pep/
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at sun.net.www.protocol.http.HttpURLConnection.run(HttpURLConnection.java:1944)
at sun.net.www.protocol.http.HttpURLConnection.run(HttpURLConnection.java:1939)
at java.security.AccessController.doPrivileged(Native Method)
at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1938)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1508)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1492)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:263)
at org.semanticweb.owlapi.io.AbstractOWLParser.getInputStreamFromContentEncoding(AbstractOWLParser.java:167)
at org.semanticweb.owlapi.io.AbstractOWLParser.getInputStream(AbstractOWLParser.java:127)
at org.semanticweb.owlapi.io.AbstractOWLParser.getInputSource(AbstractOWLParser.java:234)
at org.semanticweb.owlapi.rdf.rdfxml.parser.RDFXMLParser.parse(RDFXMLParser.java:72)
at uk.ac.manchester.cs.owl.owlapi.OWLOntologyFactoryImpl.loadOWLOntology(OWLOntologyFactoryImpl.java:212)
... 59 more
Caused by: java.io.FileNotFoundException: https://ci.mines-stetienne.fr/pep/
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1890)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1492)
at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:347)
at org.semanticweb.owlapi.io.AbstractOWLParser.getInputStream(AbstractOWLParser.java:103)
... 62 more
OWLOntologyLoaderConfiguration class 使用（像大多数 OWL API 一样）防御性复制模式，所以当你调用 setter （比如 setMissingImportHandlingStrategy)，它复制当前配置并在副本上设置策略，然后 returns（基本上是防御性复制生成器模式）。因此，您必须将此复制的配置传递给 OWLOntologyManager，如下所示：
OWLOntologyManager manager = OWLManager.createOWLOntologyManager();
//set silent imports
OWLOntologyLoaderConfiguration config = new OWLOntologyLoaderConfiguration();
config = config.setMissingImportHandlingStrategy(MissingImportHandlingStrategy.SILENT);
manager.setOntologyLoaderConfiguration(config);
另一种选择是直接在 OWLOntologyManager 实例中存在的默认加载程序配置上设置它，如（我的项目就是这样做的）：
manager.getOntologyConfigurator().setMissingImportHandlingStrategy(MissingImportHandlingStrategy.SILENT);