groovy filter xml and print -

i read xml, filter specific 'category' , write result screen or file xml. not able find right type xmlutil.serialize or streamingmarkupbuilder. can find xmlutil.serialize or 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 root = new xmlslurper().parsetext(input)  def groceries = root.shopping.findall{ it.@type == 'groceries' }   // here print filtered result file/screen /**    <category type="groceries">         <item>chocolate</item>         <item>coffee</item>     </category>  **/ println serializexml(root) // write here 'groceries' type not xmlutil.serialize or streamingmarkupbuilder     def string serializexml(gpathresult xml){     xmlutil.serialize(new streamingmarkupbuilder().bind {         mkp.yield xml       } ) } 

you can do:

import groovy.xml.*  def root = new xmlslurper().parsetext( input )  def groceries = root.children().findall { it.@type == 'groceries' }  println xmlutil.serialize( groceries ) 

to print:

<?xml version="1.0" encoding="utf-8"?><category type="groceries">   <item>chocolate</item>   <item>coffee</item> </category> 

or do:

println new streamingmarkupbuilder().bind { mkp.yield groceries } 

to print:

<category type='groceries'><item>chocolate</item><item>coffee</item></category>