我正在嘗試使用 Microsoft Custom Vision了解更多。我需要發(fā)出 HTTP 請求來發(fā)送要分析的圖像。我成功地從 C# 發(fā)出請求，所以我知道信息是正確的。但是，當(dāng)我嘗試在 Java 中發(fā)出相同的請求時，我收到了 HTTP 400 錯誤。我相信我沒有在 Java 中正確處理請求。真的嗎？以下是片段。C＃：var client = new HttpClient();client.DefaultRequestHeaders.Add("Prediction-Key", PredicitionKey);using (var content = new ByteArrayContent(byteData)){  content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");  response = await client.PostAsync(url, content);  Console.WriteLine(await response.Content.ReadAsStringAsync());}爪哇：HttpURLConnection connection = (HttpURLConnection) url.openConnection();connection.setRequestProperty("Prediction-Key", predicitionKey);connection.setRequestProperty("Content-Type", "application/octet-stream");connection.setDoInput(true);connection.setDoOutput(true);connection.getOutputStream().write(data.getData());connection.connect();Reader in = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));