Question

嗨，我正在尝试触发对以下API的POST调用。这是代码

var client = new HttpClient();

client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/octet-stream"));
client.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", key);

var queryString = HttpUtility.ParseQueryString(string.Empty);
queryString["returnFaceId"] = "true";
queryString["returnFaceLandmarks"] = "false";
queryString["returnFaceAttributes"] = "age,gender";

var filebytes = File.ReadAllBytes(@"C:\Users\user1\Desktop\IMG.jpg");

var uri = "https://southeastasia.api.cognitive.microsoft.com/face/v1.0/detect?" + queryString;

HttpResponseMessage response;


using (var content = new ByteArrayContent(filebytes))
{
    response = client.PostAsync(uri, content).Result;
    var result = response.Content.ReadAsStringAsync().Result;
}

我在result中遇到以下错误：

{"error":{"code":"BadArgument","message":"JSON parsing error."}}

如果我使用application/json并通过http链接，则此代码可以正常工作。

Answer 1

作为Microsoft的example code given，您可以尝试像示例一样设置ContentType吗？

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

Answer 2

尝试将请求内容类型设置为“ application / octet-stream”。

带有应用程序/八位字节流的POST调用

2 个答案: