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JDOMを使用してリモートHTMLファイル（Bloggerのプロファイル）のソースコードを読み込もうとしています。私はこのコードを持っています：

public Document getDoc(URL url) throws JDOMException, IOException{
    SAXBuilder saxBuilder = new SAXBuilder();
    saxBuilder.setFeature("http://xml.org/sax/features/validation", false);
    saxBuilder.setFeature("http://apache.org/xml/features/nonvalidating/load-dtd-grammar", false);
    saxBuilder.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
    saxBuilder.setValidation(false);
    Document doc = saxBuilder.build(url.openStream());
    return doc;
}

私がこのようなものを実行しようとすると：

public static void main(String[] args) throws BadLocationException, JDOMException, IOException{
        linkExtractor(new URL("http://www.blogger.com/profile/07059093309718767384"));
}

この例外が発生します：

run:
Exception in thread "main" org.jdom.input.JDOMParseException: Error on line 1: The entity name must immediately follow the '&' in the entity reference.
    at org.jdom.input.SAXBuilder.build(SAXBuilder.java:468)
    at org.jdom.input.SAXBuilder.build(SAXBuilder.java:770)
    at tc.Crawler.linkExtractor(Crawler.java:60)
    at tc.Crawler.main(Crawler.java:44)
Caused by: org.xml.sax.SAXParseException: The entity name must immediately follow the '&' in the entity reference.
    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:195)
    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(ErrorHandlerWrapper.java:174)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:388)
    at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(XMLScanner.java:1414)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEntityReference(XMLDocumentFragmentScannerImpl.java:1838)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:3024)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
    at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:140)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:807)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:107)
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
    at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
    at org.jdom.input.SAXBuilder.build(SAXBuilder.java:453)
    ... 3 more
Caused by: org.xml.sax.SAXParseException: The entity name must immediately follow the '&' in the entity reference.
    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:195)
    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(ErrorHandlerWrapper.java:174)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:388)
    at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(XMLScanner.java:1414)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEntityReference(XMLDocumentFragmentScannerImpl.java:1838)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:3024)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
    at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:140)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:807)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:107)
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
    at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
    at org.jdom.input.SAXBuilder.build(SAXBuilder.java:453)
    at org.jdom.input.SAXBuilder.build(SAXBuilder.java:770)
    at tc.Crawler.linkExtractor(Crawler.java:60)
    at tc.Crawler.main(Crawler.java:44)

次の行を追加する必要があることに注意してください。

saxBuilder.setFeature("http://xml.org/sax/features/validation", false);
    saxBuilder.setFeature("http://apache.org/xml/features/nonvalidating/load-dtd-grammar", false);
    saxBuilder.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
    saxBuilder.setValidation(false);

最初は、読み込み時に503エラーが発生していたためURL: http://www.w3.org/TR/html4/strict.dtdです。

ありがとう。

4

1 に答える 1

4

XMLパーサーを使用してHTMLを解析することは最善の方法ではありません。最初にNekoHTMLのようなものを使用することを検討してください。

于 2010-01-28T19:50:19.987 に答える