Question

我刚刚更新到10月份出现的最新版本的jtidy，它似乎因为未知原因而破坏了我的文档对象。这是我的代码：

tidy = new Tidy();
tidy.setShowWarnings(false);
tidy.setShowErrors(0);
tidy.setQuiet(true);
tidy.setMakeClean(true);

URL url = new URL(url_string);
Document doc = tidy.parseDOM(url.openStream(), null);

String xpath_string = "//table[@id='links']//a";
XPath xpath = XPathFactory.newInstance().newXPath();
XPathExpression expr = xpath.compile(xpath_string);
NodeList n = (NodeList)expr.evaluate(doc, XPathConstants.NODESET);

这是我得到的错误：

javax.xml.transform.TransformerException: -1
    at com.sun.org.apache.xpath.internal.XPath.execute(Unknown Source)
    at com.sun.org.apache.xpath.internal.XPath.execute(Unknown Source)
    at com.sun.org.apache.xpath.internal.jaxp.XPathExpressionImpl.eval(Unknown Source)
    at com.sun.org.apache.xpath.internal.jaxp.XPathExpressionImpl.eval(Unknown Source)
    at com.sun.org.apache.xpath.internal.jaxp.XPathExpressionImpl.evaluate(Unknown Source)
    at IndoorClimbing.main(IndoorClimbing.java:55)
Caused by: java.lang.ArrayIndexOutOfBoundsException: -1
    at com.sun.org.apache.xml.internal.dtm.ref.ExpandedNameTable.getType(Unknown Source)
    at com.sun.org.apache.xml.internal.dtm.ref.DTMDefaultBase.indexNode(Unknown Source)
    at com.sun.org.apache.xml.internal.dtm.ref.dom2dtm.DOM2DTM.addNode(Unknown Source)
    at com.sun.org.apache.xml.internal.dtm.ref.dom2dtm.DOM2DTM.nextNode(Unknown Source)
    at com.sun.org.apache.xml.internal.dtm.ref.DTMDefaultBase._firstch(Unknown Source)
    at com.sun.org.apache.xml.internal.dtm.ref.DTMDefaultBase.getFirstChild(Unknown Source)
    at com.sun.org.apache.xml.internal.dtm.ref.DTMDefaultBaseTraversers$ChildTraverser.first(Unknown Source)
    at com.sun.org.apache.xpath.internal.axes.AxesWalker.getNextNode(Unknown Source)
    at com.sun.org.apache.xpath.internal.axes.AxesWalker.nextNode(Unknown Source)
    at com.sun.org.apache.xpath.internal.axes.WalkingIterator.nextNode(Unknown Source)
    at com.sun.org.apache.xpath.internal.axes.NodeSequence.nextNode(Unknown Source)
    at com.sun.org.apache.xpath.internal.axes.NodeSequence.runTo(Unknown Source)
    at com.sun.org.apache.xpath.internal.axes.NodeSequence.setRoot(Unknown Source)
    at com.sun.org.apache.xpath.internal.axes.LocPathIterator.execute(Unknown Source)
    ... 6 more
---------
java.lang.ArrayIndexOutOfBoundsException: -1
    at com.sun.org.apache.xml.internal.dtm.ref.ExpandedNameTable.getType(Unknown Source)
    at com.sun.org.apache.xml.internal.dtm.ref.DTMDefaultBase.indexNode(Unknown Source)
    at com.sun.org.apache.xml.internal.dtm.ref.dom2dtm.DOM2DTM.addNode(Unknown Source)
    at com.sun.org.apache.xml.internal.dtm.ref.dom2dtm.DOM2DTM.nextNode(Unknown Source)
    at com.sun.org.apache.xml.internal.dtm.ref.DTMDefaultBase._firstch(Unknown Source)
    at com.sun.org.apache.xml.internal.dtm.ref.DTMDefaultBase.getFirstChild(Unknown Source)
    at com.sun.org.apache.xml.internal.dtm.ref.DTMDefaultBaseTraversers$ChildTraverser.first(Unknown Source)
    at com.sun.org.apache.xpath.internal.axes.AxesWalker.getNextNode(Unknown Source)
    at com.sun.org.apache.xpath.internal.axes.AxesWalker.nextNode(Unknown Source)
    at com.sun.org.apache.xpath.internal.axes.WalkingIterator.nextNode(Unknown Source)
    at com.sun.org.apache.xpath.internal.axes.NodeSequence.nextNode(Unknown Source)
    at com.sun.org.apache.xpath.internal.axes.NodeSequence.runTo(Unknown Source)
    at com.sun.org.apache.xpath.internal.axes.NodeSequence.setRoot(Unknown Source)
    at com.sun.org.apache.xpath.internal.axes.LocPathIterator.execute(Unknown Source)
    at com.sun.org.apache.xpath.internal.XPath.execute(Unknown Source)
    at com.sun.org.apache.xpath.internal.XPath.execute(Unknown Source)
    at com.sun.org.apache.xpath.internal.jaxp.XPathExpressionImpl.eval(Unknown Source)
    at com.sun.org.apache.xpath.internal.jaxp.XPathExpressionImpl.eval(Unknown Source)
    at com.sun.org.apache.xpath.internal.jaxp.XPathExpressionImpl.evaluate(Unknown Source)
    at IndoorClimbing.main(IndoorClimbing.java:55)
--------------- linked to ------------------
javax.xml.xpath.XPathExpressionException
    at com.sun.org.apache.xpath.internal.jaxp.XPathExpressionImpl.evaluate(Unknown Source)
    at IndoorClimbing.main(IndoorClimbing.java:55)
Caused by: javax.xml.transform.TransformerException: -1
    at com.sun.org.apache.xpath.internal.XPath.execute(Unknown Source)
    at com.sun.org.apache.xpath.internal.XPath.execute(Unknown Source)
    at com.sun.org.apache.xpath.internal.jaxp.XPathExpressionImpl.eval(Unknown Source)
    at com.sun.org.apache.xpath.internal.jaxp.XPathExpressionImpl.eval(Unknown Source)
    ... 2 more
Caused by: java.lang.ArrayIndexOutOfBoundsException: -1
    at com.sun.org.apache.xml.internal.dtm.ref.ExpandedNameTable.getType(Unknown Source)
    at com.sun.org.apache.xml.internal.dtm.ref.DTMDefaultBase.indexNode(Unknown Source)
    at com.sun.org.apache.xml.internal.dtm.ref.dom2dtm.DOM2DTM.addNode(Unknown Source)
    at com.sun.org.apache.xml.internal.dtm.ref.dom2dtm.DOM2DTM.nextNode(Unknown Source)
    at com.sun.org.apache.xml.internal.dtm.ref.DTMDefaultBase._firstch(Unknown Source)
    at com.sun.org.apache.xml.internal.dtm.ref.DTMDefaultBase.getFirstChild(Unknown Source)
    at com.sun.org.apache.xml.internal.dtm.ref.DTMDefaultBaseTraversers$ChildTraverser.first(Unknown Source)
    at com.sun.org.apache.xpath.internal.axes.AxesWalker.getNextNode(Unknown Source)
    at com.sun.org.apache.xpath.internal.axes.AxesWalker.nextNode(Unknown Source)
    at com.sun.org.apache.xpath.internal.axes.WalkingIterator.nextNode(Unknown Source)
    at com.sun.org.apache.xpath.internal.axes.NodeSequence.nextNode(Unknown Source)
    at com.sun.org.apache.xpath.internal.axes.NodeSequence.runTo(Unknown Source)
    at com.sun.org.apache.xpath.internal.axes.NodeSequence.setRoot(Unknown Source)
    at com.sun.org.apache.xpath.internal.axes.LocPathIterator.execute(Unknown Source)
    ... 6 more

尝试生成NodeList时，错误发生在最后一行代码中。新版JTidy有没有这样的问题？

Answer 1

有类似的问题。找到一个相当愚蠢的解决方法（重新解析jtidy输出），这表明jTidy存在问题。

document = tidy.parseDOM(rstream, null); 

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
Source xmlSource = new DOMSource(document);
Result outputTarget = new StreamResult(outputStream);
TransformerFactory.newInstance().newTransformer().transform(xmlSource, outputTarget);
InputStream is = new ByteArrayInputStream(outputStream.toByteArray());

Document doc = db.parse(is);

花了我几个小时;希望这有帮助。

Answer 2

由于错误发生在com.sun.org.apache，我不认为这是一个JTidy问题。

尝试删除您的示例，以便针对XalanJ project提交错误报告。

JTidy升级打破了文档xpaths

2 个答案: