Baidu Map API で、Java を使用して指定した場所の地下鉄路線情報を取得するにはどうすればよいですか?

<dependencies>
  <dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.2.47</version>
  </dependency>
  <dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>4.5.9</version>
  </dependency>
</dependencies>

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;

public class BaiduMapAPI {
    
    public static void main(String[] args) {
        String url = "http://api.map.baidu.com/place/v2/search?query=地铁站&location=40.057406,116.296440&radius=2000&output=json&ak=Your_AK";
        
        String result = sendHttpRequest(url);
        Map<String, String> subwayLines = parseSubwayLines(result);
        
        System.out.println("地铁线路信息：");
        for (String lineName : subwayLines.keySet()) {
            System.out.println(lineName + "：" + subwayLines.get(lineName));
        }
    }
    
    private static String sendHttpRequest(String urlString) {
        try {
            URL url = new URL(urlString);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setRequestMethod("GET");
            connection.setConnectTimeout(5000);
            connection.setReadTimeout(5000);
            
            int responseCode = connection.getResponseCode();
            if (responseCode == HttpURLConnection.HTTP_OK) {
                BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
                String line;
                StringBuilder response = new StringBuilder();
                while ((line = in.readLine()) != null) {
                    response.append(line);
                }
                in.close();
                
                return response.toString();
            } else {
                System.out.println("HTTP请求失败，错误码：" + responseCode);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        
        return null;
    }
    
    private static Map<String, String> parseSubwayLines(String json) {
        Map<String, String> subwayLines = new HashMap<>();
        JSONObject jsonObject = JSON.parseObject(json);
        
        JSONArray results = jsonObject.getJSONArray("results");
        for (int i = 0; i < results.size(); i++) {
            JSONObject result = results.getJSONObject(i);
            
            String name = result.getString("name");
            String detail = result.getString("detail_info");
            
            subwayLines.put(name, detail);
        }
        
        return subwayLines;
    }
}