Question

我正在尝试从Microsoft Face API获取简单的功能，使用提供的示例（link）：

// Request headers
client.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", "{subscription key}");

// Request parameters
queryString["returnFaceId"] = "true";
queryString["returnFaceLandmarks"] = "false";
queryString["returnFaceAttributes"] = "{string}";
var uri = "https://westus.api.cognitive.microsoft.com/face/v1.0/detect?" + queryString;

HttpResponseMessage response;

// Request body
byte[] byteData = Encoding.UTF8.GetBytes("{body}");

using (var content = new ByteArrayContent(byteData))
{
   content.Headers.ContentType = new MediaTypeHeaderValue("< your content type, i.e. application/json >");
   response = await client.PostAsync(uri, content);
}

每当我执行代码时，我都会得到一个400错误的请求，其中我无法查看具体原因。这就是我的看法：

// Request headers
client.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", "xxxxxxxxxxxxxxxxxxxxxxx");

// Request parameters
queryString["returnFaceId"] = "true";
queryString["returnFaceLandmarks"] = "false";
queryString["returnFaceAttributes"] = "Age";
var uri = "https://westus.api.cognitive.microsoft.com/face/v1.0/detect?" + queryString;

HttpResponseMessage response;

// Request body
byte[] byteData = Encoding.UTF8.GetBytes("{ \"url\":\"http://i0.kym-cdn.com/photos/images/newsfeed/000/272/907/dc1.jpg/ \"}");

using (var content = new ByteArrayContent(byteData))
{
    content.Headers.ContentType = new MediaTypeHeaderValue("application/json");
    response = await client.PostAsync(uri, content);
    Console.Write(response.StatusCode);
}

Answer 1

代码看起来很好，我看到的唯一问题是您的图片无法访问。如果我尝试直接通过浏览器访问图像，我将获得访问被拒绝错误。那是你检查过的吗？

我尝试了下面的代码，它运行正常：

var client = new HttpClient（）; var queryString = HttpUtility.ParseQueryString（string.Empty）;

            // Request headers
            client.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key","please use your key");

            // Request parameters
            queryString["returnFaceId"] = "true";
            queryString["returnFaceLandmarks"] = "false";
            queryString["returnFaceAttributes"] = "age";
            var uri = "https://westus.api.cognitive.microsoft.com/face/v1.0/detect?" + queryString;

            HttpResponseMessage response;

            // Request body
            byte[] byteData = Encoding.UTF8.GetBytes("{ \"url\":\"https://lh5.googleusercontent.com/-AI__M0nZDU4/AAAAAAAAAAI/AAAAAAAAAGs/P5tdI3rFaFs/s0-c-k-no-ns/photo.jpg \"}");


            using (var content = new ByteArrayContent(byteData))
            {
                content.Headers.ContentType = new MediaTypeHeaderValue("application/json");

                response = await client.PostAsync(uri, content);

                Console.Write(response.StatusCode);

            }

400 Bad Request C＃Microsoft Face Api

1 个答案: