Question

I am trying to print formatted xml to a file but my XmlNodePrinter just prints a blank file. The xml object that I am passing in is populated correctly, I think. I can print it using a StreamingMarkupBuilder but it is formatted all on a single line. I am not sure why I cannot use the XmlNodePrinter. Here’s the relevant part of my code.

The goal of the code is to modify an xml configuration file. I have to do a find/replace on a certain permission.

File file = new File("input.xml")
def root = new XmlSlurper().parse(file)

def admins = root.user.findAll {[e-mail]().equals("admin")}
admins.each { admin ->
  admin.permission.findAll { [e-mail]().equals("RoleManagement") 
  }.each {
    it.@type = "AdminRoleManagement"
  }
}

String filename = "output.xml"
new XmlNodePrinter(new PrintWriter(filename)).print(root)

Thanks

Answer 1

I believe XmlNodePrinter requires a Node rather than a GPathResult

XmlSlurper.parse returns GPathResult

So the obvious solution is to use XmlParser instead of XmlSlurper

Or, you can use StreamingMarkupBuilder and do:

def smb = new StreamingMarkupBuilder().bind { mkp.yield root }
new File( 'output.xml' ).text = groovy.xml.XmlUtil.serialize( smb )