Here is an example of updating XML using XmlSlurper:
// require(groupId:'xmlunit', artifactId:'xmlunit', version:'1.1')
import org.custommonkey.xmlunit.Diff
import org.custommonkey.xmlunit.XMLUnit
import groovy.xml.StreamingMarkupBuilder
def input = '''
<shopping>
<category type="groceries">
<item>Chocolate</item>
<item>Coffee</item>
</category>
<category type="supplies">
<item>Paper</item>
<item quantity="4">Pens</item>
</category>
<category type="present">
<item when="Aug 10">Kathryn's Birthday</item>
</category>
</shopping>
'''
def expectedResult = '''
<shopping>
<category type="groceries">
</category>
<category type="supplies">
<item>Iced Tea</item>
<item quantity="6" when="Urgent">Pens</item>
</category>
<category type="present">
<item>Mum's Birthday</item>
<item when="Oct 15">Monica's Birthday</item>
</category>
<category>
<item>Wine</item>
</category>
</shopping>
'''
def root = new XmlSlurper().parseText(input)
// modify groceries: quality items please
def groceries = root.category.find{ it.@type == 'groceries' }
(0..<groceries.item.size()).each {
groceries.item[it] = 'Luxury ' + groceries.item[it]
}
// modify supplies: we need extra pens
def pens = root.category.find{ it.@type == 'supplies' }.item.findAll{ it.text() == 'Pens' }
pens.each { p ->
p.@quantity = (p.@quantity.toInteger() + 2).toString()
p.@when = 'Urgent'
}
// modify presents: August has come and gone
def presents = root.category.find{ it.@type == 'present' }
presents.replaceNode{ node ->
category(type:'present'){
item("Mum's Birthday")
item("Monica's Birthday", when:'Oct 15')
}
}
// append child at the end of shopping
root.appendNode {
category {
item("Wine")
}
}
// delete all occurrences of a specific element inside a specific parent
root.category[0].item.replaceNode {}
// update the text of a specific element
root.category[1].item[0] = "Iced Tea"
// check the whole document using XmlUnit
def outputBuilder = new StreamingMarkupBuilder()
String result = outputBuilder.bind{ mkp.yield root }
XMLUnit.setIgnoreWhitespace(true)
def xmlDiff = new Diff(result, expectedResult)
assert xmlDiff.similar()
// check the when attributes (can't do before now due to delayed setting)
def resultRoot = new XmlSlurper().parseText(result)
def removeNulls(list) { list.grep{it} }
assert removeNulls(resultRoot.'*'.item.@when) == [ "Urgent", "Oct 15" ]
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