使用POST android发送php数组

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.impl.client.DefaultHttpClient;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;

public class MainActivity extends AppCompatActivity {

    private static final String SERVER_URL = "http://example.com/post.php";

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

        // 创建要发送的PHP数组
        HashMap<String, String> postData = new HashMap<>();
        postData.put("name", "John");
        postData.put("age", "25");

        // 将PHP数组转换为JSON字符串
        Gson gson = new Gson();
        String json = gson.toJson(postData);

        // 发送POST请求
        new SendPostRequest().execute(json);
    }

    private class SendPostRequest extends AsyncTask<String, Void, String> {

        @Override
        protected String doInBackground(String... params) {
            try {
                // 创建HTTP客户端
                HttpClient httpClient = new DefaultHttpClient();

                // 创建POST请求
                HttpPost httpPost = new HttpPost(SERVER_URL);

                // 设置请求的Content-Type为application/json
                httpPost.setHeader("Content-Type", "application/json");

                // 设置请求的主体为JSON字符串
                StringEntity stringEntity = new StringEntity(params[0]);
                httpPost.setEntity(stringEntity);

                // 发送请求并获取响应
                HttpResponse response = httpClient.execute(httpPost);

                // 读取响应内容
                InputStream inputStream = response.getEntity().getContent();
                BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
                StringBuilder stringBuilder = new StringBuilder();
                String line;
                while ((line = bufferedReader.readLine()) != null) {
                    stringBuilder.append(line);
                }
                bufferedReader.close();
                inputStream.close();

                return stringBuilder.toString();
            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;
        }

        @Override
        protected void onPostExecute(String result) {
            // 处理服务器响应
            if (result != null) {
                // 解析服务器响应的JSON字符串
                Gson gson = new Gson();
                HashMap<String, String> response = gson.fromJson(result, HashMap.class);

                // 处理服务器响应的数据
                String message = response.get("message");
                Toast.makeText(MainActivity.this, message, Toast.LENGTH_SHORT).show();
            }
        }
    }
}

<?php
// 接收POST请求
$postData = $_POST;

// 处理接收到的PHP数组
$name = $postData['name'];
$age = $postData['age'];

// 处理结果
$response = array();
$response['message'] = "Received data: Name - $name, Age - $age";

// 将处理结果转换为JSON字符串并发送回客户端
echo json_encode($response);
?>