题意：为什么 OpenAI 图像生成 API 在 Unity 中返回 400 Bad Request 错误？
问题背景：
I'm testing out dynamically generating images using OpenAI API in Unity. Amusingly, I actually generated most of this code from chatGPT.
我正在测试在 Unity 中使用 OpenAI API 动态生成图像。有趣的是，我实际上是通过 ChatGPT 生成了大部分代码。
The Error response is: "Your request contained invalid JSON: Expecting value: line 1 column 1 (char 0)". But I cant see anything wrong with the json formatting of my requestbody...
错误响应是：‘你的请求包含无效的 JSON：期待值：第 1 行第 1 列 (字符 0)’。但我看不出我的请求体的 JSON 格式有什么问题……
I also found this other question which is probably failing for the same reason, whatever it is:
我还发现了另一个问题，可能因为同样的原因而失败，无论是什么原因：Why does Post request to OpenAI in Unity result in error 400?
Here is my code: 以下是我的代码：
public class PlayerScript : MonoBehaviour
{// Replace API_KEY with your actual API keyprivate string API_KEY = "<api_key>";private string API_URL = "https://api.openai.com/v1/images/generations";void Start(){StartCoroutine(GetImage());}IEnumerator GetImage(){// Create a request body with the prompt "Player"string requestBody = "{\"prompt\": \"Player\",\"n\": 1,\"size\": \"128x128\"}";// Create a UnityWebRequest and set the request method to POSTUnityWebRequest www = UnityWebRequest.Post(API_URL, requestBody);// Set the authorization header with the API keywww.SetRequestHeader("Authorization", "Bearer " + API_KEY);// Set the content type headerwww.SetRequestHeader("Content-Type", "application/json");// Send the requestyield return www.SendWebRequest();// Check for errorsif (www.isNetworkError || www.isHttpError){Debug.LogError(www.error);}else{// do stuff}}
}Any idea what's going wrong? Apologies if it's something obvious, never made web requests in Unity before.
知道哪里出了问题吗？如果问题显而易见请见谅，我以前从未在 Unity 中发过网络请求。
问题解决：
UnityWebRequests url-encodes content before submitting the request. This messes up the formatting. see:
UnityWebRequests 在提交请求之前会对内容进行 URL 编码，这会导致格式混乱。参见：prevent UnityWebRequest.Post() from Url-Encoding the data ? - Questions & Answers - Unity Discussions
using httpClient worked for me.
“使用 httpClient 对我来说是有效的。
