我想从 goeuro api 获取结果 json

我正在用 Java 开发 API 以从GoEuro获取 json API可在github 上获得。我想知道我需要使用 POST 方法发送的参数并将结果作为 json 并结合我的自定义逻辑。

这是我调用api的java代码。

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

public class JsonEncodeDemo {
    public static void main(String[] args) {
        try {

            URL url = new URL("http://www.goeuro.com/GoEuroAPI/rest/api/v3/search?departure_fk=318781&departure_date=16%2F04%2F2017&arrival_fk=380553&trip_type=one-way&adults=1&children=0&infants=0&from_filter=Coventry+%28COV%29%2C+United+Kingdom&to_filter=London%2C+United+Kingdom&travel_mode=bus&ab_test_enabled=");
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("POST");

//          conn.setRequestMethod("GET");
            conn.setRequestProperty("Accept", "application/json");

            if (conn.getResponseCode() != 200) {
                throw new RuntimeException("Failed : HTTP error code : " + conn.getResponseCode());
            }

            BufferedReader br = new BufferedReader(new InputStreamReader((conn.getInputStream()), "UTF-8"));

            String output;
            System.out.println("Output from Server .... \n");
            while ((output = br.readLine()) != null) {
                System.out.println(output);
            }

            conn.disconnect();

        } catch (MalformedURLException e) {

            e.printStackTrace();

        } catch (IOException e) {

            e.printStackTrace();

        }

    }
}

我不擅长 nodejs。任何帮助，将不胜感激。