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Asked: 2026-06-16T00:19:41+00:00

I’m trying to extract a org.w3c.dom.NodeList from http://www.amazon.com/gp/bestsellers/electronics in Java. Here’s the XPath statement

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I’m trying to extract a org.w3c.dom.NodeList from http://www.amazon.com/gp/bestsellers/electronics in Java. Here’s the XPath statement I used to display the results I’m after in the Google Chrome JavaScript console:

$x("//div[@class='zg_itemRightDiv_normal']")

The above statement worked flawlessly, but when I use Java’s javax.xml.xpath and org.w3c.dom libraries, I get no results:

XPathExpression expr = xPath.compile("//div[@class='zg_itemRightDiv_normal']");
NodeList productNodes = (NodeList) expr.evaluate(doc, XPathConstants.NODESET);

// In the above productNodes definition, doc is a org.w3c.dom.DocumentFragment

System.out.println(productNodes.getLength()); // prints out '0'

What am I missing?

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1 Answer

  1. Editorial Team

    The solution to this problem ended up being twofold:

    1. The DocumentFragment I was reading from didn’t include the information I was attempting to extract; using the full Document solved the issue
    2. For some reason, capitalizing the HTML tags in my XPath statements allowed me to acquire the information I was after (i.e., xPath.compile("//DIV[@class='zg_itemRightDiv_normal']")).
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