為了讓java加載sklearn的模型，各種苦頭啊。。

Exception in thread "main" java.lang.IllegalArgumentException: http://www.dmg.org/PMML-4_4at org.dmg.pmml.Version.forNamespaceURI(Version.java:62)at org.jpmml.model.filters.PMMLFilter.updateSource(PMMLFilter.java:121)at org.jpmml.model.filters.PMMLFilter.startPrefixMapping(PMMLFilter.java:43)at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startNamespaceMapping(AbstractSAXParser.java:2164)at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:469)at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:374)at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl$NSContentDriver.scanRootElementHook(XMLNSDocumentScannerImpl.java:613)at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:3132)at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:852)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:841)at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:770)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 org.xml.sax.helpers.XMLFilterImpl.parse(XMLFilterImpl.java:357)at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:243)at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:214)at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:140)at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:123)at org.jpmml.model.JAXBUtil.unmarshal(JAXBUtil.java:82)at org.jpmml.model.JAXBUtil.unmarshalPMML(JAXBUtil.java:68)at org.jpmml.model.PMMLUtil.unmarshal(PMMLUtil.java:35)at controller.PmmlFile.predictLrHeart(PmmlFile.java:37)at controller.PmmlFile.main(PmmlFile.java:27)

我都沒看懂這個報錯到底啥意思。

排查過程很艱難:

先是修改依賴版本，得到:

<dependency><groupId>org.jpmml</groupId><artifactId>pmml-evaluator</artifactId><version>1.4.13</version> </dependency><dependency><groupId>org.jpmml</groupId><artifactId>pmml-evaluator-extension</artifactId><version>1.4.13</version> </dependency> Exception in thread "main" java.lang.IllegalArgumentException: PMML namespace URI http://www.dmg.org/PMML-4_4 is not supportedat org.dmg.pmml.Version.forNamespaceURI(Version.java:69)at org.jpmml.model.filters.PMMLFilter.updateSource(PMMLFilter.java:121)at org.jpmml.model.filters.PMMLFilter.startPrefixMapping(PMMLFilter.java:43)at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startNamespaceMapping(AbstractSAXParser.java:2164)at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:469)at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:374)at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl$NSContentDriver.scanRootElementHook(XMLNSDocumentScannerImpl.java:613)at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:3132)at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:852)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:841)at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:770)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 org.xml.sax.helpers.XMLFilterImpl.parse(XMLFilterImpl.java:357)at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:243)at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:214)at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:140)at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:123)at org.jpmml.model.JAXBUtil.unmarshal(JAXBUtil.java:55)at org.jpmml.model.JAXBUtil.unmarshalPMML(JAXBUtil.java:41)at org.jpmml.model.PMMLUtil.unmarshal(PMMLUtil.java:56)at controller.PmmlFile.predictLrHeart(PmmlFile.java:37)at controller.PmmlFile.main(PmmlFile.java:27)Process finished with exit code 1

?

總結

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