A groovlet that logs access and serves a simple HTML page

simpleGroovlet.groovy

if (!session) {
  session = request.getSession(true);
}

if (!session.counter) {
      session.counter = 1
}

html.html {
  head {
    title 'Simple Groovlet'
  }
  body {
    h1 'Welcome to my Groovlet'
    p "The current time at this server is ${new Date()}"
    p "The session counter is now at ${sesson.counter}"
    br()
    p "System properties:"
    ul {
      for ( prop in System.properties.keySet()) {
        li "$prop: ${System.getProperty(prop)}"
      }
    }
  }
}

session.counter += 1