Android OKHTTP StringEntity

我正在使用OKHTTP向Microsoft文本分析API发送POST请求，但无法在OKHTTP的请求正文中找到StringEntity的对应项

我要发送的HTTP请求是：

POST https://westus.api.cognitive.microsoft.com/text/analytics/v2.0/languages?numberOfLanguagesToDetect=1 HTTP/1.1
Content-Type: application/json
Host: westus.api.cognitive.microsoft.com
Ocp-Apim-Subscription-Key: ••••••••••••••••••••••••••••••••
    {
      "documents": [
        {
          "id": "string",
          "text": "example string"
        }
      ]
    }

我现在的写作方式是：

OkHttpClient client = new OkHttpClient();

HttpUrl.Builder urlBuilder = HttpUrl.parse("https://westus.api.cognitive.microsoft.com/text/analytics/v2.0/languages").newBuilder();
urlBuilder.addQueryParameter("numberOfLanguagesToDetect", "1");
String url = urlBuilder.build().toString();

JSONObject text = new JSONObject();
text.put("id", "string");
text.put("text", "example string");
MediaType jsonMT = MediaType.parse("application/json; charset=utf-8");
RequestBody rBody = RequestBody.create(jsonMT, text.toString());
Request request = new Request.Builder()
                  .header("Content-Type", "application/json")
                  .header("Ocp-Apim-Subscription-Key", sub-key)
                  .url(url)
                  .post(rBody)
                  .build();

Response response = client.newCall(request).execute();
ResponseBody body = response.body();

然而，这是不正确的。如何设置请求正文的格式，使其成为“文档”：[ { “id”：“字符串”， “文本”：“示例字符串” } ]？

尝试以下操作：

 JSONObject document = new JSONObject();
 document.put("id", "string");
 document.put("text", "example string");
 JSONArray documents = new JSONArray();
 documents.put(document);
 JSONObject root = new JSONObject();
 root.put("documents", documents);