Project Oxford Faces API [Java] {" code"：" BadArgument"，" message"：" Invalid Media Type。"}

我正在下载图片，如此...

I am downloading an image, like so...

           网址url =新网址（" http://www.huntresearchgroup.org.uk/images/group/group_photo_2010.jpg"）;

             BufferedImage image = ImageIO.read（url）;

             ByteArrayOutputStream baos = new ByteArrayOutputStream（）;

             ImageIO.write（image，" jpg"，baos）;

             bytes = baos.toByteArray（）;

            base64Img = Base64.getEncoder（）。encodeToString（bytes）;

             StringBuilder sb = new StringBuilder（）;

            for（byte by：bytes）

                sb.append（Integer.toBinaryString（& 0xFF））;

            imgBinaryString = sb.toString（）;

            URL url = new URL("http://www.huntresearchgroup.org.uk/images/group/group_photo_2010.jpg");
            BufferedImage image = ImageIO.read(url);
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            ImageIO.write(image, "jpg", baos);
            bytes = baos.toByteArray();
            base64Img = Base64.getEncoder().encodeToString(bytes);
            StringBuilder sb = new StringBuilder();
            for (byte by : bytes)
                sb.append(Integer.toBinaryString(by & 0xFF));
            imgBinaryString = sb.toString();

            URIBuilder builder = new URIBuilder（" https://api.projectoxford.ai/face/v1.0/detect"）;

            builder.setParameter（" returnFaceId"，" false"）;

            builder.setParameter（" returnFaceLandmarks"，" false"）;

            builder.setParameter（" returnFaceAttributes"，" age，gender"）;
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            URI uri = builder.build（）;

            HttpPost请求=新的HttpPost（uri）;

            request.setHeader（" Content-Type"，" octet-stream"）;

                

            StringEntity reqEntity = new StringEntity（imgBinaryString）;

            request.setEntity（reqEntity）;

            URIBuilder builder = new URIBuilder("https://api.projectoxford.ai/face/v1.0/detect");
            builder.setParameter("returnFaceId", "false");
            builder.setParameter("returnFaceLandmarks", "false");
            builder.setParameter("returnFaceAttributes", "age,gender");

            URI uri = builder.build();
            HttpPost request = new HttpPost(uri);
            request.setHeader("Content-Type", "octet-stream");
                
            StringEntity reqEntity = new StringEntity(imgBinaryString );
            request.setEntity(reqEntity);

我已经尝试发送图像的二进制表示字符串，如上所示。我已经尝试发送Base64编码图像的二进制表示字符串。什么都行不通。一些帮助会很棒。

I have tried sending a binary representation string of the image, as shown above. I have tried sending a binary representation string of the Base64 encoded image. Nothing works. Some help would be great.