间接导入时出现FileNotFoundException

问题描述 投票：1回答：1

我正在创建自定义本体（本体A），并且尝试使用“导入特定文件中包含的本体”来导入自己创建的另一个本体（本体B）时，收到关于间接导入的“ FileNotFoundException”。 ”选项。

本体B在将其本地下载到名为micropublications.owl的文件中后，成功导入了Micropublications本体（可以在here中找到）。导入micropublications.owl时，我使用“导入特定文件中包含的本体”。选项，一切正常。我检查了“ protege”中的“ import”部分，一切似乎都很好，即有一个指向实际下载文件的特定“ Location”，等等。

当我尝试将本体B导入本体A时，它失败并且日志文件包含以下完整堆栈跟踪

2017-09-07 11:28:20.907 [Thread-3] INFO  LastResortExtractor    Exception caught trying to get ontology id for file:/C:/Users/.../OntologyB.owl
org.semanticweb.owlapi.model.UnloadableImportException: Could not load imported ontology: <http://purl.org/mp/> Cause: http://purl.org/mp/
    at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.makeLoadImportRequest(OWLOntologyManagerImpl.java:1709) ~[owlapi-osgidistribution.jar:4.2.8.20170104-2310]
    at org.semanticweb.owlapi.owlxml.parser.OWLImportsHandler.endElement(PARSER_OWLXMLVocabulary.java:3004) ~[na:na]
    at org.semanticweb.owlapi.owlxml.parser.OWLXMLParserHandler.endElement(OWLXMLParserHandler.java:422) ~[na:na]
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:609) ~[na:1.8.0_40]
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1782) ~[na:1.8.0_40]
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2973) ~[na:1.8.0_40]
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:606) ~[na:1.8.0_40]
    at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:117) ~[na:1.8.0_40]
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510) ~[na:1.8.0_40]
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:848) ~[na:1.8.0_40]
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777) ~[na:1.8.0_40]
    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141) ~[na:1.8.0_40]
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213) ~[na:1.8.0_40]
    at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:649) ~[na:1.8.0_40]
    at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl.parse(SAXParserImpl.java:333) ~[na:1.8.0_40]
    at org.semanticweb.owlapi.owlxml.parser.OWLXMLParser.parse(OWLXMLParser.java:60) ~[na:na]
    at uk.ac.manchester.cs.owl.owlapi.OWLOntologyFactoryImpl.loadOWLOntology(OWLOntologyFactoryImpl.java:197) ~[owlapi-osgidistribution.jar:4.2.8.20170104-2310]
    at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.actualParse(OWLOntologyManagerImpl.java:1099) ~[owlapi-osgidistribution.jar:4.2.8.20170104-2310]
    at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.loadOntology(OWLOntologyManagerImpl.java:1055) ~[owlapi-osgidistribution.jar:4.2.8.20170104-2310]
    at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.loadOntologyFromOntologyDocument(OWLOntologyManagerImpl.java:998) ~[owlapi-osgidistribution.jar:4.2.8.20170104-2310]
    at org.protege.editor.owl.model.repository.extractors.LastResortExtractor.getOntologyId(LastResortExtractor.java:21) ~[protege-editor-owl.jar:na]
    at org.protege.editor.owl.model.repository.MasterOntologyIDExtractor.getOntologyId(MasterOntologyIDExtractor.java:26) [protege-editor-owl.jar:na]
    at org.protege.editor.owl.ui.ontology.imports.wizard.page.AnticipateOntologyIdPage.checkImport(AnticipateOntologyIdPage.java:109) [protege-editor-owl.jar:na]
    at org.protege.editor.owl.ui.ontology.imports.wizard.page.AnticipateOntologyIdPage.lambda$new$163(AnticipateOntologyIdPage.java:44) [protege-editor-owl.jar:na]
    at org.protege.editor.owl.ui.ontology.imports.wizard.page.AnticipateOntologyIdPage$$Lambda$120/769332687.run(Unknown Source) [protege-editor-owl.jar:na]
    at java.lang.Thread.run(Thread.java:745) [na:1.8.0_40]
Caused by: org.semanticweb.owlapi.io.OWLOntologyCreationIOException: http://purl.org/mp/
    at uk.ac.manchester.cs.owl.owlapi.OWLOntologyFactoryImpl.loadOWLOntology(OWLOntologyFactoryImpl.java:207) ~[owlapi-osgidistribution.jar:4.2.8.20170104-2310]
    at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.actualParse(OWLOntologyManagerImpl.java:1099) ~[owlapi-osgidistribution.jar:4.2.8.20170104-2310]
    at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.loadOntology(OWLOntologyManagerImpl.java:1055) ~[owlapi-osgidistribution.jar:4.2.8.20170104-2310]
    at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.loadOntology(OWLOntologyManagerImpl.java:957) ~[owlapi-osgidistribution.jar:4.2.8.20170104-2310]
    at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.loadImports(OWLOntologyManagerImpl.java:1666) ~[owlapi-osgidistribution.jar:4.2.8.20170104-2310]
    at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.makeLoadImportRequest(OWLOntologyManagerImpl.java:1702) ~[owlapi-osgidistribution.jar:4.2.8.20170104-2310]
    ... 25 common frames omitted
Caused by: java.io.FileNotFoundException: http://purl.org/mp/
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_40]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_40]
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_40]
    at java.lang.reflect.Constructor.newInstance(Constructor.java:422) ~[na:1.8.0_40]
    at sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1889) ~[na:1.8.0_40]
    at sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1884) ~[na:1.8.0_40]
    at java.security.AccessController.doPrivileged(Native Method) ~[na:1.8.0_40]
    at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1883) ~[na:1.8.0_40]
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1456) ~[na:1.8.0_40]
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1440) ~[na:1.8.0_40]
    at org.semanticweb.owlapi.io.AbstractOWLParser.getInputStreamFromContentEncoding(AbstractOWLParser.java:165) ~[owlapi-osgidistribution.jar:4.2.8.20170104-2310]
    at org.semanticweb.owlapi.io.AbstractOWLParser.getInputStream(AbstractOWLParser.java:127) ~[owlapi-osgidistribution.jar:4.2.8.20170104-2310]
    at org.semanticweb.owlapi.io.AbstractOWLParser.getInputSource(AbstractOWLParser.java:232) ~[owlapi-osgidistribution.jar:4.2.8.20170104-2310]
    at org.semanticweb.owlapi.rdf.rdfxml.parser.RDFXMLParser.parse(RDFXMLParser.java:72) ~[owlapi-osgidistribution.jar:4.2.8.20170104-2310]
    at uk.ac.manchester.cs.owl.owlapi.OWLOntologyFactoryImpl.loadOWLOntology(OWLOntologyFactoryImpl.java:197) ~[owlapi-osgidistribution.jar:4.2.8.20170104-2310]
    ... 30 common frames omitted
Caused by: java.io.FileNotFoundException: http://purl.org/mp/
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1835) ~[na:1.8.0_40]
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1440) ~[na:1.8.0_40]
    at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480) ~[na:1.8.0_40]
    at org.semanticweb.owlapi.io.AbstractOWLParser.getInputStream(AbstractOWLParser.java:103) ~[owlapi-osgidistribution.jar:4.2.8.20170104-2310]
    ... 33 common frames omitted
2017-09-07 11:28:20.907 [Thread-3] ERROR AnticipateOntologyIdPage    An error occurred whilst extracting the Ontology Id from the imported ontology: {}
java.lang.NullPointerException: null
    at org.protege.editor.owl.model.repository.MasterOntologyIDExtractor.getOntologyId(MasterOntologyIDExtractor.java:27) ~[protege-editor-owl.jar:na]
    at org.protege.editor.owl.ui.ontology.imports.wizard.page.AnticipateOntologyIdPage.checkImport(AnticipateOntologyIdPage.java:109) [protege-editor-owl.jar:na]
    at org.protege.editor.owl.ui.ontology.imports.wizard.page.AnticipateOntologyIdPage.lambda$new$163(AnticipateOntologyIdPage.java:44) [protege-editor-owl.jar:na]
    at org.protege.editor.owl.ui.ontology.imports.wizard.page.AnticipateOntologyIdPage$$Lambda$120/769332687.run(Unknown Source) [protege-editor-owl.jar:na]
    at java.lang.Thread.run(Thread.java:745) [na:1.8.0_40]
2017-09-07 11:28:25.679 [pool-2-thread-1] INFO  AddImportsStrategy    -------------------- Importing ontology and imports closure --------------------

[Protege似乎在以其基本URI而不是实际文件位置命名的文件中搜索Micropublications模型，这在本体B的相应导入语句中已明确说明。请注意，本体B还导入了其他本体，这些本体不会导致本体A中的问题。

关于出什么问题的任何想法？

PS我正在使用Protege 5.2.0。

protege
1个回答
1
投票

我发现了一种可能对他人有用的解决方法。当我在相同的Protege窗口中加载本体B和本体A时，可以使用“导入已在工作空间中加载的本体”选项导入本体B，并且一切似乎都正常。

希望这会有所帮助

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