Android 将带有表情符号的 JSON 正文发送到 nodejs 服务器

Question

我正在尝试从 android 向我的 nodejs 服务器发送 PATCH 请求。我可以在 JSON 内发送纯文本而不会出现任何错误。但是当我在 JSON 中添加一些表情符号时，服务器会抛出 SyntaxError: Unexpected token in JSON。我可以毫无问题地从邮递员那里发送表情符号。我想我的 android 代码有问题。这是 android,

的代码

private JSONObject sendData(){
JSONObject jsonParam = new JSONObject();
jsonParam.put("text", "this will work fine");
jsonParam.put("payload", "This will throw error");

StringBuilder data = new StringBuilder();
        JSONObject obj = null;
        try {
            URL url = new URL(baseUrl + path);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod(method);
            conn.setRequestProperty("Content-Type", "application/json;charset=UTF-8");
            conn.setRequestProperty("Accept", "application/json");
            conn.setDoOutput(true);
            conn.setDoInput(true);
            DataOutputStream os = new DataOutputStream(conn.getOutputStream());
            //os.writeBytes(URLEncoder.encode(jsonParam.toString(), "UTF-8"));
            os.writeBytes(jsonParam.toString());
            ////
            InputStream inputStream = conn.getInputStream();
            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
            String line = "";
            while (line != null) {
                line = bufferedReader.readLine();
                data.append(line);
            }
            obj = new JSONObject(data.toString());

            os.flush();
            os.close();
            conn.disconnect();

        } catch (Exception e) {
            e.printStackTrace();
            Log.e("SEND_REQUEST_ERROR", e.toString());
        }
        return obj;
}

Answer 1

private String convertStringToUTF8(String s) {
       return new String(s.getBytes(StandardCharsets.UTF_8), StandardCharsets.ISO_8859_1);
    }

jsonParam.put("payload", convertStringToUTF8("This will work without error"));

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