Apikey 对 POST 无效，但对 GET 请求有效？

问：

尝试从公共 api（谷歌翻译）获取任何响应。 在 POST 调用中有 403“请求缺少有效的 API 密钥”，但同时来自 GET 调用的成功响应。

    val client = OkHttpClient()

    // POST DETECT
    val mediaType = "application/x-www-form-urlencoded".toMediaTypeOrNull()
    val body = "q=English%20is%20hard%2C%20but%20detectably%20so".toRequestBody(mediaType)
    val request = Request.Builder()
        .url("$urlPrefix/detect")
        .post(body)
        .addHeader("content-type", "application/x-www-form-urlencoded")
        .addHeader("Accept-Encoding", "application/gzip")
        .addHeader("X-RapidAPI-Key",  apiKey)
        .addHeader("X-RapidAPI-Host", apiHost)
        .build()

    val response = client.newCall(request).execute()
    println("POST: " + response.body!!.string())

    // GET LANGUAGES
    val reqGet = Request.Builder()
        .url("$urlPrefix/languages")
        .get()
        .addHeader("Accept-Encoding", "application/gzip")
        .addHeader("X-RapidAPI-Key",  apiKey)
        .addHeader("X-RapidAPI-Host", apiHost)
        .build()

    val respGet = client.newCall(reqGet).execute()
    println("GET: " + respGet.body!!.string())

我应该使用 smth 而不是 okhttp3：okhttp：4.12.0 还是如何修复它？

可能 apiKey 是正确的，因为在 GET||POST 调用，响应为：

"{"message":"You are not subscribed to this API."}"

响应 POST：

{
  "error": {
    "code": 403,
    "message": "The request is missing a valid API key.",
    "errors": [
      {
        "message": "The request is missing a valid API key.",
        "domain": "global",
        "reason": "forbidden"
      }
    ],
    "status": "PERMISSION_DENIED"
  }
}

请求标头：

{
  "host": "google-translate1.p.rapidapi.com",
  "content-type": "application/x-www-form-urlencoded; charset=utf-8",
  "x-amzn-trace-id": "Root=1-654f490d-7f0a4fed6376983b7736b3d4",
  "x-forwarded-port": "443",
  "x-forwarded-proto": "https",
  "content-length": "48",
  "x-forwarded-for": "62.217.189.77",
  "user-agent": "okhttp/4.12.0",
  "x-rapidapi-host": "google-translate1.p.rapidapi.com",
  "accept-encoding": "application/gzip"
}