package cn.flightfeather.supervision.docx4j.simpleDemo;
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import org.docx4j.XmlUtils;
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import org.docx4j.openpackaging.packages.WordprocessingMLPackage;
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import org.docx4j.openpackaging.parts.WordprocessingML.MainDocumentPart;
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import java.util.List;
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public class XPathQuery {
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/**
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* Example of how to find an object in document.xml
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* via XPath.
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*
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* As explained in Getting Started, there are limitations
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* in the JAXB reference implementation which make this
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* approach buggy:
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*
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* 1. the xpath expressions are evaluated against the XML
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* document as it was when first opened in docx4j. You
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* can update the associated XML document once only, by
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* passing true into getJAXBNodesViaXPath. Updating it again
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* (with current JAXB 2.1.x or 2.2.x) will cause an error.
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*
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* 2. For some objects,JAXB can’t get parent (with getParent)
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*
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* 3. For some document, JAXB can’t set up the XPath at all!
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*
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* If these problems affect you, you could try using
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* MOXy as your JAXB implementation (which docx4j supports
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* as from forthcoming docx4j 3.0). See
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* http://www.docx4java.org/forums/docx-java-f6/moxy-t1242.html
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*
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* Alternatively, the tried and tested approach is
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* to use TraversalUtil;
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* see the OpenMainDocumentAndTraverse sample.
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*
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*/
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public static void main(String[] args) throws Exception {
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String inputfilepath = System.getProperty("user.dir") + "/sample-docs/word/sample-docx.xml";
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WordprocessingMLPackage wordMLPackage = WordprocessingMLPackage.load(new java.io.File(inputfilepath));
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MainDocumentPart documentPart = wordMLPackage.getMainDocumentPart();
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String xpath = "//w:t[contains(text(),'scaled')]";
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//String xpath = "//w:r[w:t[contains(text(),'scaled')]]";
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List<Object> list = documentPart.getJAXBNodesViaXPath(xpath, false);
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System.out.println("got " + list.size() + " matching " + xpath );
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for (Object o : list) {
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//System.out.println(o.getClass().getName() );
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Object o2 = XmlUtils.unwrap(o);
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// this is ok, provided the results of the Callback
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// won't be marshalled
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if (o2 instanceof org.docx4j.wml.Text) {
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org.docx4j.wml.Text txt = (org.docx4j.wml.Text)o2;
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System.out.println( txt.getValue() );
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// Demonstrate the getParent bug
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//Object parent = txt.getParent();
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//System.out.println( "parent: " + XmlUtils.unwrap(parent).getClass().getName() );
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} else {
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System.out.println( XmlUtils.marshaltoString(o, true, true));
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}
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}
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}
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}
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