API Çağrısı (x-www-form-urlencoded)

import groovy.json.JsonSlurper

try{
  String urlParameters="url=parametreleri&burada=yerAlacak"
  byte[] postData = urlParameters.getBytes( "UTF-8" )
  int postDataLength = postData.length

  String request = "http://<SERVICE_IP>:30080/token"

  URL url = new URL( request )
  HttpURLConnection conn= (HttpURLConnection) url.openConnection()
  conn.setDoOutput(true)
  conn.setRequestMethod("POST")
  conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded")
  conn.setUseCaches(false)
  try{
    DataOutputStream wr = new DataOutputStream(conn.getOutputStream())
    wr.write( postData )
    wr.close()
  }catch(Exception e){
    requestErrorMessageToTargetAPI=e.getMessage()
  }
  
  //do some logic with json response
  def json = conn.inputStream.withCloseable { inStream -> new JsonSlurper().parse( inStream as InputStream ) }
  requestHeaderMapToTargetAPI.put("Authorization" ,"Bearer "+json.access_token)


  //or do some logic with text response
  String responseText = conn.inputStream.withCloseable { inStream ->
        new BufferedReader(new InputStreamReader(inStream, "UTF-8")).getText()
  }

}catch(Exception e){
  requestErrorMessageToTargetAPI=e.getMessage()
}