Parse XML to retrieve multiple values of same tag

Question

I am new to XPath and XML. I am trying to retrieve values of a particular tag from tag. That particular tag in following tree structure

<article>
<front>
<article-meta>
<supplementary-material id="SM2379">
<caption><title>arg_3.docx</title></caption>
</supplementary-material>
<supplementary-material id="SM2375">
<caption><title>arg_2.docx</title></caption>
</supplementary-material>
<supplementary-material id="SM2373">
<caption><title>Sulental_material.docSulental_material.docSulental_material.docSulental_material.docSulental_material.docSulental_material.docSulental_material.docSulental_material.docSulental_material.docSulental_material.docSulental_material.docSulental_material.docSulental_material.docSulental_material.docSulental_material.docSulental_material.docSulental_material.docSulental_material.doc</title></caption>
</supplementary-material>
</article-meta>
</front>
</article>

I want to retrieve all ' title ' tag in this sample file along with ' id ' of parent tag. As I need to add to existing functionality I have some limitation like use jdom, can use xpath etc

Any help will be truly appreciated

Answer 1

It is quite easy to achieve what you're trying to do if the nodes are built up straight like they are in your example.

You'll have to

• Parse the xml-file with whatever you have to use (jdom)
• Use an XPath query to retrieve the title nodes. ( //title will do in your case)
• Get the ID of the grandparent element

These tasks should be easy enough to handle!

---

In addition to the comment:

The code provided by you:

XPath xpath = XPathFactory.newInstance().newXPath();
NodeList n1 = (NodeList) xpath.evaluate("article/front/article-meta/supplementary-material/caption/title", document, XPathConstants.NODESET);
for (int k = 0; k < n1.getLength();k++)
{
    System.out.println(n1.item(k).getNodeName()+" : "+n1.item(k).getTextContent());
}

works just fine. But the code you provided had some UTF-8 issues in my IDE