Estoy usando Java 6. Tengo esta dependencia en mi pom ...

<code>            <dependency>
                    <groupId>xerces</groupId>
                    <artifactId>xercesImpl</artifactId>
                    <version>2.10.0</version>
            </dependency>
</code>

Estoy tratando de analizar un documento XHTML con esta línea

<code>   <!--[if gte mso 9]><xml>  <w:WordDocument>   <w:View>Normal</w:View>   <w:Zoom>0</w:Zoom>   <w:TrackMoves/>   <w:TrackFormatting/>   <w:PunctuationKerning/>   <w:ValidateAgainstSchemas/>   <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid>   <w:IgnoreMixedContent>false</w:IgnoreMixedContent>   <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText>   <w:DoNotPromoteQF/>   <w:LidThemeOther>EN-US</w:LidThemeOther>   <w:LidThemeAsian>JA</w:LidThemeAsian>   <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript>   <w:Compatibility>    <w:BreakWrappedTables/>    <w:SnapToGridInCell/>    <w:WrapTextWithPunct/>    <w:UseAsianBreakRules/>    <w:DontGrowAutofit/>    <w:SplitPgBreakAndParaMark/>    <w:EnableOpenTypeKerning/>    <w:DontFlipMirrorIndents/>    <w:OverrideTableStyleHps/>    <w:UseFELayout/>   </w:Compatibility>   <m:mathPr>    <m:mathFont m:val="Cambria Math"/>    <m:brkBin m:val="before"/>    <m:brkBinSub m:val="--"/>    <m:smallFrac m:val="off"/>    <m:dispDef/>    <m:lMargin m:val="0"/>    <m:rMargin m:val="0"/>    <m:defJc m:val="centerGroup"/>    <m:wrapIndent m:val="1440"/>    <m:intLim m:val="subSup"/>    <m:naryLim m:val="undOvr"/>   </m:mathPr></w:WordDocument> </xml><![endif]-->
</code>

usando este código ...

<code>    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    factory.setValidating(false);
    factory.setExpandEntityReferences(false);
    factory.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
    final DocumentBuilder builder = factory.newDocumentBuilder();
    final InputSource s = new InputSource(new StringReader(str));
    org.w3c.dom.Document result = builder.parse(s);
</code>

pero mi análisis está muriendo con la siguiente excepción ...

<code>[Fatal Error] :91:947: The string "--" is not permitted within comments.
org.xml.sax.SAXParseException: The string "--" is not permitted within comments.
    at org.apache.xerces.parsers.DOMParser.parse(Unknown Source)
    at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source)
    at com.myco.myproject.util.XmlUtilities.getStringAsDocument(XmlUtilities.java:201)
    at com.myco.myproject.util.NetUtilities.getUrlAsDocument(NetUtilities.java:67)
    at com.myco.myproject.parsers.impl.ForesightEventsParser.getEventsFromElement(ForesightEventsParser.java:133)
    at com.myco.myproject.parsers.impl.ForesightEventsParser.parsePage(ForesightEventsParser.java:99)
    at com.myco.myproject.parsers.impl.ForesightEventsParser.getEvents(ForesightEventsParser.java:58)
    at com.myco.myproject.domain.EventFeed.refresh(EventFeed.java:87)
    at com.myco.myproject.domain.EventFeed.getEvents(EventFeed.java:72)
    at com.myco.myproject.parsers.impl.ForesightParserTest.testParser(ForesightParserTest.java:49)
    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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
    at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:83)
    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
</code>

Sin cambiar mi XHTML, ¿alguien sabe cómo puedo analizar este documento correctamente?

Editar Por los comentarios dados, quité el término "bien formado" de mi pregunta original. Todavía estoy realmente interesado en cómo hacer que esta excepción desaparezca sin cambiar el texto que estoy analizando (sobre el que no tengo control). Para los propósitos de esta pregunta, puede asumir que "-" dentro de los comentarios es la única violación del término "bien formado".