c# - Face API Base64 图片发布返回 badrequest

Question

Face API 与图像的 URL 一起工作，但是当我尝试将图像发送为 Base64 编码它返回一个错误。 在此示例代码中，我使用 Restsharp 发送数据

我的代码如下。

 public string GenerateRest(String Base64Image)
    {
        var serviceURL = Constants.BaseServiceURI;
        var client = new RestClient(serviceURL);

        var request = new RestRequest(Constants.BaseResoruce, Method.POST);
        request.AddHeader("Ocp-Apim-Subscription-Key", Constants.MS_API_KEY);
        request.AddHeader("Content-Type", "application/octet-stream");

        request.RequestFormat = DataFormat.Json;

        var baseString = Base64Image.Replace("data:image/jpeg;base64,", String.Empty);

        byte[] newBytes = Convert.FromBase64String(baseString);

        request.AddBody(newBytes);
        // execute the request
        IRestResponse response = client.Execute(request);
        var content = response.Content; // raw content as string

        return content;
    }

根据答案代码修复 Restsharp 请求后

 public FaceAPIOutput GenerateRest(String Base64Image)
    {
        var serviceURL = Constants.BaseServiceURI;
        var client = new RestClient(serviceURL);
        var baseString = Base64Image.Replace("data:image/jpeg;base64,", String.Empty);
        byte[] newBytes = Convert.FromBase64String(baseString);

        var request = new RestRequest(Constants.BaseResoruce, Method.POST);
        request.AddHeader("Ocp-Apim-Subscription-Key", Constants.MS_API_KEY);
        request.AddParameter("application/octet-stream", newBytes, ParameterType.RequestBody);
        request.RequestFormat = DataFormat.Json;

        IRestResponse response = client.Execute(request);
        var content = response.Content; // raw content as string

        return ConvertToFaceAPIOutObject(content);
    }

Answer 1

Restsharp 在获取二进制有效负载时看起来有点特殊。您需要执行以下操作，而不是添加多部分表单部分的 request.AddBody:

request.AddParameter("application/octet-stream", newBytes, ParameterType.RequestBody);

比较Can RestSharp send binary data without using a multipart content type?