如何在android中读取http post对象的响应？

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONObject;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // 创建HttpClient对象
        HttpClient httpClient = new DefaultHttpClient();

        // 创建HttpPost对象，并设置URL
        HttpPost httpPost = new HttpPost("http://example.com/api");

        try {
            // 设置请求参数
            List<NameValuePair> params = new ArrayList<>();
            params.add(new BasicNameValuePair("param1", "value1"));
            params.add(new BasicNameValuePair("param2", "value2"));
            httpPost.setEntity(new UrlEncodedFormEntity(params));

            // 发送HTTP请求
            HttpResponse response = httpClient.execute(httpPost);

            // 获取服务器响应的内容
            HttpEntity entity = response.getEntity();
            InputStream inputStream = entity.getContent();
            BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
            StringBuilder stringBuilder = new StringBuilder();
            String line;
            while ((line = reader.readLine()) != null) {
                stringBuilder.append(line);
            }
            String responseString = stringBuilder.toString();

            // 解析响应数据
            JSONObject jsonResponse = new JSONObject(responseString);
            String result = jsonResponse.getString("result");

            // 处理响应数据
            // ...

        } catch (IOException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}