我正在尝试解组我从NCBI获取的BLAST输出的XML。不幸的是,它似乎失败了。我得到的堆栈跟踪是:
org.xml.sax.SAXParseException; systemId: file:/C:/blast_output.xml; lineNumber: 578; columnNumber: 17; XML document structures must start and end within the same entity.
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:198)
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(ErrorHandlerWrapper.java:177)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:441)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:368)
at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(XMLScanner.java:1436)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.endEntity(XMLDocumentFragmentScannerImpl.java:911)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.endEntity(XMLDocumentScannerImpl.java:563)
at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.endEntity(XMLEntityManager.java:1384)
at com.sun.org.apache.xerces.internal.impl.XMLEntityScanner.load(XMLEntityScanner.java:1774)
at com.sun.org.apache.xerces.internal.impl.XMLEntityScanner.skipSpaces(XMLEntityScanner.java:1502)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.seekCloseOfStartTag(XMLDocumentFragmentScannerImpl.java:1386)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:246)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2778)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:606)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:117)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:848)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:649)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:203)
... 37 more
stacktrace中引用的XML行:
<Hsp_identity>8</Hsp_identity>
解组编码:
JAXBContext jc = JAXBContext.newInstance(BlastOutput.class);
Unmarshaller u = jc.createUnmarshaller();
return (BlastOutput) u.unmarshal(outputFile);
也许有人可以解释这里失败的原因。
答案 0 :(得分:0)
您的XML可能存在问题,或者您的配置中JAXB正在使用解析器中的错误。您可以尝试解组XMLStreamReader
的实例以强制使用不同的解析器。
import java.io.File;
import javax.xml.bind.*;
import javax.xml.stream.*;
import javax.xml.transform.stream.StreamSource;
public class Demo {
public static void main(String[] args) throws Exception {
Demo demo = new Demo();
XMLInputFactory xif = XMLInputFactory.newFactory();
File outputFile = new File("input.xml");
XMLStreamReader xsr = xif.createXMLStreamReader(new StreamSource(outputFile));
BlastOutput blastOutput = demo.unmarshalBlastOutput(xsr);
}
private BlastOutput unmarshalBlastOutput(XMLStreamReader xsr) throws Exception {
JAXBContext jc = JAXBContext.newInstance(BlastOutput.class);
Unmarshaller u = jc.createUnmarshaller();
return (BlastOutput) u.unmarshal(xsr);
}
}