Modifying XML content

In this recipe, we will learn how to update and delete nodes of a parsed XML document using the XmlParser.

Getting ready

Let's start by parsing the following XML with the XmlParser (see the Reading XML using XmlParser recipe):

def carXml = '''
<?xml version="1.0" ?>
<cool-cars>
  <car manufacturer="Ferrari">
    <model>430 Scuderia</model>
  </car>
  <car manufacturer="Porsche">
    <model>911</model>
  </car>
  <car manufacturer="Lotus">
    <model>Elan</model>
  </car>
  <car manufacturer="Pagani">
    <model>Huayra</model>
  </car>
</cool-cars>
'''

def coolCars = new XmlParser().parseText(carXml)

How to do it...

The simplest way to change the value of a node is to reference it using the position of the node itself.

1. For instance, if we want to change the model of the Lotus brand to Elise, we can reference the model node as showed in the example:

   coolCars.car...