异步任务HttpPost请求DoInbackground调用web api Android Studio Java，如何添加正文字符串数组？

import android.os.AsyncTask;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public class HttpPostTask extends AsyncTask<String, Void, String> {

    @Override
    protected String doInBackground(String... params) {
        String urlString = params[0]; // API的URL
        String[] bodyArray = params[1].split(","); // 假设bodyArray是逗号分隔的字符串

        try {
            URL url = new URL(urlString);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setRequestMethod("POST");
            connection.setRequestProperty("Content-Type", "application/json; utf-8");
            connection.setRequestProperty("Accept", "application/json");
            connection.setDoOutput(true);

            String jsonInputString = "[" + String.join(",", bodyArray) + "]"; // 将数组转换为JSON格式的字符串

            try (OutputStream os = connection.getOutputStream()) {
                byte[] input = jsonInputString.getBytes("utf-8");
                os.write(input, 0, input.length);
            }

            int responseCode = connection.getResponseCode();
            if (responseCode == HttpURLConnection.HTTP_OK) {
                // 读取响应
            } else {
                // 处理错误
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
}