appendNode using xmlSlurper in a specific position - groovy

Question

I'm gonna include the xml structure below:
#Rao, #tim_yates. The actual xml is:
<prnReq>
<ltrPrnReqs>
<ltrPrnReq>
<ltrData>encoded64 text</ltrData>
</ltrPrnReq>
</ltrPrnReqs>
</prnReq>
I need to include a new Node in . The new XML must be:
<prnReq>
<ltrPrnReqs>
<ltrPrnReq>
<ltrData>
<Salutation>text</Salutation>
</ltrData>
</ltrPrnReq>
</ltrPrnReqs>
</prnReq>
The question is how to append a new node in ?
I've found many samples how to use appendNode, however, it is always a
root.child. I need to go further in my XML structure and append a node at
prnReq.ltrPrnReqs.ltrPrnReq.ltrData
the node to be included is <salutation>
Any comments are welcome.
Below the current code.
Many thanks!
import groovy.xml.QName
import groovy.xml.StreamingMarkupBuilder
import groovy.xml.XmlUtil
File doc = new File("C:/Temp/letter_.xml")
def prnReq = new XmlSlurper().parse(doc)
prnReq.ltrPrnReqs.ltrPrnReq.each {
def encodedString = it.ltrData.toString()
Base64.Decoder decoder = Base64.getMimeDecoder()
byte[] decodedByteArray = decoder.decode(encodedString)
def output = new String(decodedByteArray)
println output
output.splitEachLine(';') { items ->
println "raSalutation: " + items[0]
println "raFromAcc: " + items[1]
println "raPayableTo: " + items[2]
println "raSortCode: " + items[3]
println "raAccNum: " + items[4]
println "raReference: " + items[5]
println "raSendDate: " + items[6]
println "raRecDate: " + items[7]
println "raAmount: " + items[8]
println "raDummy1: " + items[9]
println "raFirstAmt: " + items[10]
println "raFirstDate: " + items[11]
println "raRegularAmt: " + items[12]
println "raRegularDate: " + items[13]
println "raFrequency: " + items[14]
println "raFee: " + items[15]
def toAdd = '"<salutation>$item[0]</salutation>"'
fragToAdd = new XmlSlurper().parseText(toAdd)
prnReq.ltrPrnReqs.ltrPrnReq.ltrData.appendNode(fragToAdd)
}
String outputFileName = "C:/Temp/letter_.xml"
XmlUtil xmlUtil = new XmlUtil()
xmlUtil.serialize(prnReq, new FileWriter(new File(outputFileName)))
}

Answer 1

You should be able to add the new node using appendNode.
Here is complete sample showing how to do it.
def xmlString = """<prnReq>
<ltrPrnReqs>
<ltrPrnReq>
<ltrData>encoded64 text</ltrData>
</ltrPrnReq>
</ltrPrnReqs>
</prnReq>"""
def xml = new XmlSlurper().parseText(xmlString)
def ltrData = xml.'**'.find{it.name() == 'ltrData'}
ltrData.replaceBody()
ltrData.appendNode {
Salutation('text')
}
println groovy.xml.XmlUtil.serialize(xml)
You can quickly try it online demo