// json_xml.groovy — parse and build JSON and XML.
import groovy.json.JsonOutput
import groovy.json.JsonSlurper
import groovy.xml.MarkupBuilder
import groovy.xml.XmlSlurper

// ---- JSON: parse
def text = '''{"orderId": "PO-4471", "customer": {"name": "Acme"},
              "lines": [{"sku": "AX-200", "qty": 24, "price": 8.50},
                        {"sku": "BX-310", "qty": 2,  "price": 40}]}'''
def order = new JsonSlurper().parseText(text)
println order.customer.name                                   // Acme
println order.lines*.sku                                      // [AX-200, BX-310]
println order.lines.sum { it.qty * it.price }                 // 284.00

// ---- JSON: build
def payload = [
    externalId: order.orderId,
    entity    : [name: order.customer.name],
    items     : order.lines.collect { [item: it.sku, quantity: it.qty, rate: it.price] }
]
println JsonOutput.prettyPrint(JsonOutput.toJson(payload))

// ---- XML: parse
def xml = '''<Order id="PO-4471">
  <Customer>Acme</Customer>
  <Line sku="AX-200" qty="24"/>
  <Line sku="BX-310" qty="2"/>
</Order>'''
def root = new XmlSlurper().parseText(xml)
println root.@id                                               // PO-4471 (attribute)
println root.Customer.text()                                   // Acme
println root.Line.collect { "${it.@sku} x ${it.@qty}" }        // [AX-200 x 24, BX-310 x 2]
println root.Line.findAll { it.@qty.toInteger() > 5 }.size()   // 1

// ---- XML: build
def out = new StringWriter()
new MarkupBuilder(out).Invoice(number: 'INV-7731') {
    Customer(order.customer.name)
    order.lines.each { l -> Item(sku: l.sku, qty: l.qty) }
}
println out