Недопустимый дескриптор Исключение - UIMA с JSF и Tomcat 7

Question

Я получаю исключение при запуске приложения UIMA на TOMCAT 7.0.

ШАГОВ

1) Создан динамический веб-проект

2) Добавлено "ДОБАВИТЬ UIMA NATURE"

3) Создан механизм примитивного анализа (АЕ). Каждый примитив AE имеет тип аннотации и аннотатор (пример взят здесь)

Фрагмент из ссылки

ZipCode.xml

 <?xml version="1.0" encoding="UTF-8"?>
    <typeSystemDescription xmlns="http://uima.apache.org/resourceSpecifier">
      <name>ZipCode</name>
      <description>Defines the zipcode type</description>
      <version>1.0</version>
      <vendor>MyCompany, Inc.</vendor>
      <types>
        <typeDescription>
          <name>com.mycompany.myapp.uima.annotators.zipcode.ZipCodeAnnotation</name>
          <description>ZipCode</description>
          <supertypeName>uima.tcas.Annotation</supertypeName>
        </typeDescription>
      </types>
    </typeSystemDescription>

ZipCodeAE.xml

    <?xml version="1.0" encoding="UTF-8" ?>
   <analysisEngineDescription xmlns="http://uima.apache.org/resourceSpecifier">
      <frameworkImplementation>org.apache.uima.java</frameworkImplementation>
      <primitive>true</primitive>
      <annotatorImplementationName>
        com.mycompany.myapp.uima.annotators.zipcode.ZipCodeAnnotator
      </annotatorImplementationName>
      <analysisEngineMetaData>
        <name>Zip Code Annotator</name>
        <description>Recognize and annotate zip code in text</description>
        <version>1.0</version>
        <vendor>MyCompany, Inc.</vendor>
        <configurationParameters></configurationParameters>
        <configurationParameterSettings></configurationParameterSettings>
        <typeSystemDescription>
          <imports>
            <import location="ZipCode.xml"/>
          </imports>
        </typeSystemDescription>
        <typePriorities></typePriorities>
        <fsIndexCollection></fsIndexCollection>
        <capabilities>
          <capability>
            <inputs></inputs>
            <outputs>
              <type>com.mycompany.myapp.uima.annotators.zipcode.ZipCode</type>
            </outputs>
            <languagesSupported></languagesSupported>
          </capability>
        </capabilities>
        <operationalProperties>
          <modifiesCas>true</modifiesCas>
          <multipleDeploymentAllowed>true</multipleDeploymentAllowed>
          <outputsNewCASes>false</outputsNewCASes>
        </operationalProperties>
      </analysisEngineMetaData>
      <externalResourceDependencies></externalResourceDependencies>
      <resourceManagerConfiguration></resourceManagerConfiguration>
    </analysisEngineDescription>

ZipCodeAnnotator.java

public class ZipCodeAnnotator extends JCasAnnotator_ImplBase {

      private Pattern zipCodePattern = Pattern.compile("\\d{5}(-\\d{4})*");

      @Override
      public void process(JCas jCAS) throws AnalysisEngineProcessException {
        String text = jCAS.getDocumentText();
        Matcher matcher = zipCodePattern.matcher(text);
        int pos = 0;
        while (matcher.find(pos)) {
          ZipCodeAnnotation annotation = new ZipCodeAnnotation(jCAS);
          annotation.setBegin(matcher.start());
          annotation.setEnd(matcher.end());
          annotation.addToIndexes();
          pos = matcher.end();
        }
      }
    }

Прецедент

public class AddressAnnotatorTest {

  private final String[] TEST_STRINGS = new String[] {
    "Dr Goldwater, University of Michigan, Ann Arbor, MI 01234",
    "Microsoft, 1 Microsoft Way, Redmond, WA",
    "Apple, 1 Infinite Loop, Cupertino, CA 95014",
    "IBM, 1 New Orchard Road, Armonk, NY 10504",
    "Google, 1600 Amphitheater Parkway, Mountain View, CA 94043",
    "Healthline, 600 3rd Street, San Francisco, CA 94107",
    "Jane Doe, Lake Tahoe, California",
    "Miss Liberty, Empire State Building, New York, NY"
  };

  @Test
  public void testAddressAE() throws Exception {
    AnalysisEngine ae = TestUtils.getAE(
      "src/main/java/com/mycompany/myapp/uima/annotators/aggregates/AddressAE.xml", 
      null);
    for (String text : TEST_STRINGS) {
      JCas jcas = TestUtils.runAE(ae, text);
      TestUtils.printResults(jcas);
    }
  }
}

Если я тестирую это приложение с помощью тестового примера JUnit (как указано в приведенном выше коде), оно успешно работает без каких-либо исключений, но когда я запускаю это приложение на Tomcat, создавая простую страницу xhtml с кнопкой. и при нажатии на кнопку это вызывает исключение.

Вот фрагмент кода

XHTML

 <p:commandButton id="create" value="Print Result"
    actionListener="#{demoClass.testZipAE}" ajax="true">
    </p:commandButton>

DemoClass.java

@ManagedBean(name = "demoClass")
@SessionScoped()
public class DemoClass implements Serializable {

public AnalysisEngine getAE(
              String descriptor, Map<String,Object> params) 
              throws IOException, InvalidXMLException, 
              ResourceInitializationException {
            AnalysisEngine ae = null;
            try {

              XMLInputSource in = new XMLInputSource(ClassLoader.getSystemResourceAsStream(descriptor), null);
              AnalysisEngineDescription desc = 
                UIMAFramework.getXMLParser().
                parseAnalysisEngineDescription(in);
              if (params != null) {
                for (String key : params.keySet()) {
                  desc.getAnalysisEngineMetaData().
                  getConfigurationParameterSettings().
                  setParameterValue(key, params.get(key));
                }
              }
              ae = UIMAFramework.produceAnalysisEngine(desc);
            } catch (Exception e) {
              throw new ResourceInitializationException(e);
            }
            return ae;
          }

          public JCas runAE(AnalysisEngine ae, String text)
              throws AnalysisEngineProcessException, 
              ResourceInitializationException {
            JCas jcas = ae.newJCas();
            jcas.setDocumentText(text);
            ProcessTrace trace = ae.process(jcas);
            for (ProcessTraceEvent evt : trace.getEvents()) {
              if (evt != null && evt.getResultMessage() != null &&
                  evt.getResultMessage().contains("error")) {
                throw new AnalysisEngineProcessException(
                  new Exception(evt.getResultMessage()));
              }
            }
            return jcas;
          }

          public void printResults(JCas jcas) {
            FSIndex index = jcas.getAnnotationIndex();
            for (Iterator<Annotation> it = index.iterator(); it.hasNext(); ) {
              Annotation annotation = it.next();
              List<Feature> features = new ArrayList<Feature>();
              if (annotation.getType().getName().contains("com.mycompany")) {
                features = annotation.getType().getFeatures();
              }
              List<String> fasl = new ArrayList<String>();
              for (Feature feature : features) {
                if (feature.getName().contains("com.mycompany")) {
                  String name = feature.getShortName();
                  String value = annotation.getStringValue(feature);
                  fasl.add(name + "=\"" + value + "\"");
                }
              }
              System.out.println(
                annotation.getType().getShortName() + ": " +
                annotation.getCoveredText() + " " +
                (fasl.size() > 0 ? StringUtils.join(fasl.iterator(), ",") : "") + " " +
                annotation.getBegin() + ":" + annotation.getEnd());
            }
            System.out.println("==");
          }

          public void testZipAE(ActionEvent event) throws AnalysisEngineProcessException, ResourceInitializationException {
            AnalysisEngine ae;
            try {
                ae = getAE(
                  "TestAE.xml", 
                  null);
                 for (String text : TEST_STRINGS) {
                      JCas jcas = runAE(ae, text);
                      printResults(jcas);
                    }
            } catch (InvalidXMLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (ResourceInitializationException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
          }

TestAE.xml

<?xml version="1.0" encoding="UTF-8"?>
<analysisEngineDescription xmlns="http://uima.apache.org/resourceSpecifier">
  <frameworkImplementation>org.apache.uima.java</frameworkImplementation>
  <primitive>false</primitive>
  <delegateAnalysisEngineSpecifiers>
    <delegateAnalysisEngine key="ZipCodeAE">
      <import location="ZipCodeAE.xml"/>
    </delegateAnalysisEngine>
  </delegateAnalysisEngineSpecifiers>
  <analysisEngineMetaData>
    <name>TestAE</name>
    <description>Runs the delegate AEs together</description>
    <version>1.0</version>
    <configurationParameters searchStrategy="language_fallback"/>
    <configurationParameterSettings/>
    <flowConstraints>
      <fixedFlow>
        <node>ZipCodeAE</node>
      </fixedFlow>
    </flowConstraints>
    <typePriorities/>
    <fsIndexCollection/>
    <capabilities>
      <capability>
        <inputs/>
        <outputs/>
        <languagesSupported/>
      </capability>
    </capabilities>
    <operationalProperties>
      <modifiesCas>true</modifiesCas>
      <multipleDeploymentAllowed>true</multipleDeploymentAllowed>
      <outputsNewCASes>false</outputsNewCASes>
    </operationalProperties>
  </analysisEngineMetaData>
  <resourceManagerConfiguration/>
</analysisEngineDescription>

исключение

 org.apache.uima.resource.ResourceInitializationException: Invalid descriptor at <unknown source>.
        at com.acn.hps.alpes.gi.cip.jsf.AnalyzeFile.getAE(AnalyzeFile.java:208)
        at com.acn.hps.alpes.gi.cip.jsf.AnalyzeFile.testAddressAE(AnalyzeFile.java:145)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.el.parser.AstValue.invoke(AstValue.java:278)
        at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:274)
        at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
        at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
        at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:101)
        at javax.faces.component.UICommand.broadcast(UICommand.java:315)
        at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
        at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
        at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
        at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
        at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:77)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
        at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002)
        at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)
        at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)
    Caused by: org.apache.uima.util.InvalidXMLException: Invalid descriptor at <unknown source>.
        at org.apache.uima.util.impl.XMLParser_impl.parse(XMLParser_impl.java:194)
        at org.apache.uima.util.impl.XMLParser_impl.parseAnalysisEngineDescription(XMLParser_impl.java:492)
        at org.apache.uima.util.impl.XMLParser_impl.parseAnalysisEngineDescription(XMLParser_impl.java:473)
        at com.acn.hps.alpes.gi.cip.jsf.AnalyzeFile.getAE(AnalyzeFile.java:198)
        ... 36 more
    Caused by: org.xml.sax.SAXParseException: Content is not allowed in prolog.
        at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
        at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
        at org.apache.uima.util.impl.XMLParser_impl.parse(XMLParser_impl.java:177)
        ... 39 more

Сначала я подумал, что исключение выдается из-за любого недопустимого символа в XML, а затем по этой ссылке ( XML - данные на уровне корня недействительны) и убедился, что xml закодирован без BOM (Byte Order Mark). К сожалению, это не помогло.

Любая идея, как избавиться от этого исключения.

Answer 1

<xml version="1.0" encoding="UTF-8" ?> обычно это должно быть самое первое, что есть в XML-файле. Без пробелов, без лишних строк перед ним. Выглядит как ZipCodeAE.xml может не соответствовать этому требованию.

В противном случае было бы полезно использовать отладчик, чтобы определить, в каком файле действительно возникла проблема.