“((403)Forbidden)"尝试通过REST API将图像发送到我的自定义AutoML模型时 [英] "(403) Forbidden" when trying to send an image to my custom AutoML model via the REST API
问题描述
我在.NET Web应用程序中实现自定义AutoML模型时遇到问题,该模型允许识别通过REST API发送图像.我不断收到错误消息.
I am having issues with implementing a custom AutoML model in a .NET web app that allows sending images via the REST API to be recognized. I keep getting errors.
远程服务器返回错误:(403)禁止.
The remote server returned an error: (403) Forbidden.
我有一张图片,并将其转换为一个名为imageBytesString
的字节串,并创建了jsonRequest对象,如下所示:
I have an image and converted it into a string of bytes called imageBytesString
and have created the jsonRequest object like this:
string jsonRequest = "{\"payload\":{\"image\":{\"imageBytes\":\"" + imageBytesString + "\"},}}";`
然后我正在执行POST请求,如下所示:
Then I'm doing a POST request like follows:
WebRequest request = WebRequest.Create(@"https://automl.googleapis.com/v1beta1/projects/PROJECT_ID/locations/us-central1/models/MODEL_ID:predict");
request.Method = "POST";
request.ContentType = "application/json";
request.Headers.Add("Authorization", "Bearer GCLOUD_ACCESS_TOKEN");
using (var streamWriter = new StreamWriter(request.GetRequestStream()))
{
streamWriter.Write(jsonRequest);
}
然后,当它命中request.GetResponse();
时,如果没有其他信息就给了我以上错误.
Then when it hits request.GetResponse();
if gives me the above error with no other information.
作为参考,以下是摘自我的自定义AutoML模型的PREDICT页面底部的摘录:
For reference, these are the snippets taken from the bottom of the PREDICT page on my custom AutoML model:
request.json:
{
"payload": {
"image": {
"imageBytes": "YOUR_IMAGE_BYTE"
},
}
}
执行请求:
curl -X POST -H "Content-Type: application/json" \
-H "Authorization: Bearer $(gcloud auth application-default print-access-token)" \
https://automl.googleapis.com/v1beta1/projects/PROJECT_ID/locations/us-central1/models/MODEL_ID:predict -d @request.json
谢谢
推荐答案
我终于能够使它正常工作.
I was finally able to get it working.
要解决此问题,必须解决2个问题.
There were 2 issues that needed to be fixed for it to work.
首先;由于某种原因,当我最初创建服务帐户并输入命令gcloud auth activate-service-account --key-file="[/PATH/TO/KEY/FILE.json]
时,它告诉我它可以工作,并且该服务帐户已添加到gcloud auth list
列表中.但是在再次检查时,它不存在,所以我再次运行它.
Firstly; for some reason, when I initially created the service account and entered the command gcloud auth activate-service-account --key-file="[/PATH/TO/KEY/FILE.json]
, it told me that it worked and the service account was added to the gcloud auth list
list. But upon checking again, it wasn't there so I ran it again.
第二;我通过以下命令获取访问令牌:
Secondly; I was getting the access token with the following command:
gcloud auth application-default print-access-token
相反,我尝试使用通过以下命令收到的访问令牌:
Instead, I tried using the access token received with the following command:
gcloud auth print-access-token
(没有application-default
)在其中.
完成上述两项操作后,我现在能够成功发送图像请求并接收预测响应.
After I had done both those things, I am now able to successfully send an image request and receive the prediction response.
但是,尽管如此,我似乎还是每小时仍需要获取一个新的访问令牌.但这是我想的另一个问题.
But it seems I still have to get a new access token every hour though... But that's another issue I suppose.
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