通过HTTP post从JSON中的Android到Python Flask的UTF-8编码字符串

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.ByteArrayEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONObject;

import java.io.InputStream;

public class MainActivity extends AppCompatActivity {

    private static final String SERVER_URL = "http://your_server_url";

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

        // 构建JSON数据
        JSONObject json = new JSONObject();
        try {
            json.put("key1", "value1");
            json.put("key2", "value2");
        } catch (JSONException e) {
            e.printStackTrace();
        }

        // 将JSON数据转换为字符串并进行UTF-8编码
        String jsonString = json.toString();
        byte[] postData = null;
        try {
            postData = jsonString.getBytes("UTF-8");
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }

        // 发送HTTP post请求到服务器
        HttpClient httpClient = new DefaultHttpClient();
        HttpPost httpPost = new HttpPost(SERVER_URL);
        httpPost.setHeader("Content-Type", "application/json");
        httpPost.setHeader("Accept", "application/json");
        httpPost.setEntity(new ByteArrayEntity(postData));

        try {
            HttpResponse response = httpClient.execute(httpPost);
            HttpEntity entity = response.getEntity();
            if (entity != null) {
                InputStream inputStream = entity.getContent();
                // 处理服务器返回的响应数据
                // ...
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

from flask import Flask, request

app = Flask(__name__)

@app.route('/', methods=['POST'])
def handle_post_request():
    # 接收HTTP post请求的数据
    data = request.get_data()
    
    # 将字节数组解码为UTF-8编码的字符串
    utf8_string = data.decode('utf-8')
    
    # 处理接收到的数据
    # ...
    
    return 'Success'

if __name__ == '__main__':
    app.run()