android - OpenAI ChatGPT (GPT-3.5) API 错误 400 : "Unexpected response code 400 for https://api.openai.com/v1/chat/completions" (migrating GPT-3 to GPT-3. 5 API)

Question

我收到以下错误:

[3067] NetworkUtility.shouldRetryException: Unexpected response code400 for https://api.openai.com/v1/chat/completions

代码:

private fun getResponseTurbo(query: String) {
    // setting text on for question on below line.
    questionTV.text = query
    queryEdt.setText("")
    // creating a queue for request queue.
    val queue: RequestQueue = Volley.newRequestQueue(applicationContext)
    // creating a json object on below line.
    val jsonObject: JSONObject ? = JSONObject()
    // adding params to json object.

    jsonObject ? .put("model", "gpt-3.5-turbo")
    jsonObject ? .put("messages", "[{'role': 'user', 'content': 'What are your functionalities?'}]")

    jsonObject ? .put("temperature", 0)
    jsonObject ? .put("max_tokens", 48)
    jsonObject ? .put("top_p", 1)
    jsonObject ? .put("frequency_penalty", 0)
    jsonObject ? .put("presence_penalty", 0)

    // on below line making json object request.
    val postRequest: JsonObjectRequest =
        // on below line making json object request.
        object: JsonObjectRequest(Method.POST, url_turbo, jsonObject,
            Response.Listener {
                response - >
                    // on below line getting response message and setting it to text view.
                    val responseMsg: String =
                    response.getJSONArray("choices").getJSONObject(0).getString("message")
                chattypingLT.visibility = View.GONE
                ll_copy_share.visibility = View.VISIBLE
                responseTV.text = responseMsg
            },
            // adding on error listener
            Response.ErrorListener {
                error - >
                    Log.e("TAGAPI", "Error is : " + error.message + "\n" + error)
            }) {
            override fun getHeaders(): kotlin.collections.MutableMap < kotlin.String, kotlin.String > {
                val params: MutableMap < String,
                String > = HashMap()
                // adding headers on below line.
                params["Content-Type"] = "application/json"
                params["Authorization"] =
                "Bearer APIKEY"
                return params;
            }
        }

    // on below line adding retry policy for our request.
    postRequest.setRetryPolicy(object: RetryPolicy {
        override fun getCurrentTimeout(): Int {
            return 50000
        }

        override fun getCurrentRetryCount(): Int {
            return 50000
        }

        @Throws(VolleyError::class)
        override fun retry(error: VolleyError) {}
    })
    // on below line adding our request to queue.
    queue.add(postRequest)
}

Answer 1

您使用的是 gpt-3.5-turbo 型号。

Chat Completions API 之间存在三个主要区别(即 GPT-3.5 API)和 Completions API (即 GPT-3 API):

1. API端点
   • Completions API:https://api.openai.com/v1/completions
   • 聊天完成 API:https://api.openai.com/v1/chat/completions
2. prompt 参数(Completions API)已替换为 messages 参数(Chat Completions API)
3. 响应访问
   • Completions API:
     response.getJSONArray("choices").getJSONObject(0).getString("text")
   • 聊天完成 API:response.getJSONArray("choices").getJSONObject(0).getString("message")

问题

您答对了第一点和第三点。这(即第二个要点)是代码中有问题的部分:

jsonObject ? .put("messages", "[{'role': 'user', 'content': 'What are your functionalities?'}]")

为什么？

您提供的代码中 messages 参数的 JSON 无效，这是因为它对字符串值使用单引号。在 JSON 中，字符串值应始终用双引号括起来，而不是单引号。

解决方案

试试这个:

JSONObject jsonObject = new JSONObject();
JSONArray messages = new JSONArray();
JSONObject message = new JSONObject();

message.put("role", "user");
message.put("content", "What are your functionalities?");

messages.put(message);

jsonObject.put("messages", messages);

此代码将创建以下 JSON 对象:

{
  "messages": [
    {
      "role": "user",
      "content": "What are your functionalities?"
    }
  ]
}

如果您仍然收到 API 错误 400，请确保您已将 Content-Type header 设置为 application/json。请小心，application/json, UTF-8 不起作用。