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()
}