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  1. import java.io.ByteArrayInputStream;
  2. import javax.xml.parsers.DocumentBuilderFactory;
  3. import org.w3c.dom.Document;
  4. import org.w3c.dom.Element;
  5. import org.w3c.dom.Node;
  6. import javax.xml.xpath.*;
  7.  
  8. public class Main{
  9.  
  10. public static void main(String[] args) {
  11.     try 
  12.     {
  13.       Document document = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(
  14.         new ByteArrayInputStream(
  15.           ("<foo><foo1>Foo Test 1</foo1><foo2><another1><test1>Foo Test 2</test1></another1></foo2><foo3>Foo Test 3</foo3><foo4>Foo Test 4</foo4></foo>").getBytes()
  16.         )
  17.       );
  18.  
  19.       String xpath = getXPath(document, "another1");
  20.       System.out.println(xpath);        
  21.  
  22.     }
  23.     catch (Exception e) 
  24.     {
  25.       e.printStackTrace();
  26.     }
  27.  
  28.  
  29. }
  30.  
  31. private static String getXPath(Document root, String elementName) throws XPathExpressionException 
  32. {
  33.   XPathExpression expr = XPathFactory.newInstance().newXPath().compile("//" + elementName);
  34.   Node node = (Node)expr.evaluate(root, XPathConstants.NODE);
  35.  
  36.   if(node != null) {
  37.       return getXPath(node);
  38.   }
  39.  
  40.   return null;
  41. }
  42.  
  43. private static String getXPath(Node node) {
  44.     if(node == null || node.getNodeType() != Node.ELEMENT_NODE) {
  45.         return "";
  46.     }
  47.  
  48.     return getXPath(node.getParentNode()) + "/" + node.getNodeName();
  49. }
  50.  
  51. }
Success #stdin #stdout 0.09s 246144KB
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Standard input is empty
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/foo/foo2/another1
https://ideone.com/EL4783
language:
Java (HotSpot 12)
created:
11 years ago
visibility:
secret

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