// Copyright (c) Microsoft Corporation. All rights reserved.

// Licensed under the MIT License.

import java.net.URI;

import org.apache.http.HttpEntity;

import org.apache.http.HttpResponse;

import org.apache.http.client.HttpClient;

import org.apache.http.client.methods.HttpPost;

import org.apache.http.entity.StringEntity;

import org.apache.http.client.utils.URIBuilder;

import org.apache.http.impl.client.DefaultHttpClient;

import org.apache.http.util.EntityUtils;

import org.json.JSONArray;

import org.json.JSONObject;

/**

* Include these library jars (or newer +), add to a lib folder:

* commons-logging-4.0.6+

* httpclient-4.5.3+

* httpcore-4.4.13+

* json-20190722+

*

* To compile and run from command line:

* javac Main.java -cp .;lib\*

* java -cp .;lib\* Main

*/

public class Main

{

// Add your Face subscription key and endpoint to your environment variables.

private static String subscriptionKey = System.getenv("FACE_SUBSCRIPTION_KEY");

private static String baseUrl = System.getenv("FACE_ENDPOINT");

public static final String endpoint= baseUrl + "/face/v1.0/detect";

private static String image = "https://raw.githubusercontent.com/Azure-Samples/cognitive-services-sample-data-files/master/Face/images/test-image-person-group.jpg";

public static void main(String[] args)

{

HttpClient httpclient = new DefaultHttpClient();

try

{

URIBuilder builder = new URIBuilder(endpoint);

// Request parameters. All of them are optional.

builder.setParameter("returnFaceId", "true");

builder.setParameter("returnFaceLandmarks", "false");

builder.setParameter("returnFaceAttributes", "age,gender,headPose,smile,facialHair,glasses,emotion,hair,makeup,occlusion,accessories,blur,exposure,noise");

// Prepare the URI for the REST API call.

URI uri = builder.build();

HttpPost request = new HttpPost(uri);

// Request headers.

request.setHeader("Content-Type", "application/json");

request.setHeader("Ocp-Apim-Subscription-Key", subscriptionKey);

// Request body.

StringEntity reqEntity = new StringEntity("{\"url\":\"" + image + "\"}");

request.setEntity(reqEntity);

// Execute the REST API call and get the response entity.

HttpResponse response = httpclient.execute(request);

HttpEntity entity = response.getEntity();

if (entity != null)

{

// Format and display the JSON response.

System.out.println("REST Response:\n");

String jsonString = EntityUtils.toString(entity).trim();

if (jsonString.charAt(0) == '[') {

JSONArray jsonArray = new JSONArray(jsonString);

System.out.println(jsonArray.toString(2));

}

else if (jsonString.charAt(0) == '{') {

JSONObject jsonObject = new JSONObject(jsonString);

System.out.println(jsonObject.toString(2));

} else {

System.out.println(jsonString);

}

}

}

catch (Exception e)

{

// Display error message.

System.out.println(e.getMessage());

}

}

}