如何在WebView中拦截POST请求的JSON响应？

import android.webkit.WebView;
import android.webkit.WebViewClient;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class CustomWebViewClient extends WebViewClient {

    private static final String TARGET_URL = "http://example.com/target"; // 目标URL

    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
        if (url.equals(TARGET_URL)) {
            // 判断请求的URL是否为目标URL
            // 判断请求的方法是否为POST
            // 拦截POST请求并获取响应的JSON数据
            String jsonResponse = sendPostRequest(url);
            
            // 处理获取到的JSON数据
            handleJsonResponse(jsonResponse);
            
            return true; // 返回true表示拦截该请求
        }
        
        return super.shouldOverrideUrlLoading(view, url);
    }

    private String sendPostRequest(String url) {
        try {
            URL targetUrl = new URL(url);
            HttpURLConnection connection = (HttpURLConnection) targetUrl.openConnection();
            connection.setRequestMethod("POST");
            connection.setDoOutput(true);
            
            // 设置POST请求的参数
            // connection.getOutputStream().write(...);
            
            // 发送POST请求
            connection.connect();
            
            // 获取响应的JSON数据
            InputStream inputStream = connection.getInputStream();
            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
            StringBuilder response = new StringBuilder();
            String line;
            while ((line = bufferedReader.readLine()) != null) {
                response.append(line);
            }
            
            // 关闭连接和流
            bufferedReader.close();
            inputStream.close();
            connection.disconnect();
            
            return response.toString();
        } catch (IOException e) {
            e.printStackTrace();
        }
        
        return null;
    }

    private void handleJsonResponse(String jsonResponse) {
        // 处理获取到的JSON数据
        // 解析JSON数据、修改JSON数据、或者根据业务需求进行其他操作
    }
}

WebView webView = findViewById(R.id.webView);
webView.setWebViewClient(new CustomWebViewClient());