Java DOM How to check if node exists in XML

Question

Here is my xml file

<?xml version="1.0" encoding="UTF-8"?>
<productlist>
<product>
<title>1</title>
<price>30</price>
</product>
<product>
<title>2</title>
<price>9</price>
</product>
<product>
<title>3</title>
</product>
</productlist>

What I need to do is use Java DOM API to print out all the contents from XML file which contain "price" tag. Such things like this

title:1
price:30 
title:2 
price:9

In the org.w3c.dom documentation I only find hasAttribute(String name) method to check if this element have attribute but I can not find method like "hasTag(String name)" in documentation. I find this website http://www.java-forums.org/xml/62136-check-whether-xml-tag-exists-while-parsing-xml-using-dom-java.html but unfortunately I can not open the site. Hope you can help.

Jon Skeet · Accepted Answer · 2013-04-04 16:27:38Z

26

Just call getElementsByTagName and see if the returned list has any nodes (using NodeList.getLength()).

answered Apr 4, 2013 at 16:27

Jon Skeet

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1 Comment

Shawn Lien Over a year ago

seems this is the best way, little bit tricky anyway. But thanks

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