如何使用OAuth访问令牌调用Dialogflow Rest API

Question

我已经在google控制台中创建了项目，启用Dialogflow API创建的OAuth v2凭据使用此凭据我调用了access token API来生成令牌

https://accounts.google.com/o/oauth2/v2/auth?
 scope=https://www.googleapis.com/auth/dialogflow&
 access_type=offline&
 include_granted_scopes=true&
 response_type=code&
 state=state_parameter_passthrough_value&
 redirect_uri=http://localhost&
 client_id= **i placed client id here**

我收到了访问令牌并将其传递给Dialog flow API

https://dialogflow.googleapis.com/v2/projects/**PROJECT-ID**/agent/sessions/123456:detectIntent
Header
Content-Type : application/json; charset=utf-8
Authorization : Bearer **ACCESS_TOKEN**

Body
{
  "query_input": {
    "text": {
      "text": "I know french",
      "language_code": "en-US"
    }
  }
}

但我还是遇到了这个错误

“error”：{“code”：401，“message”：“请求的身份验证凭据无效。应为OAuth 2访问令牌、登录cookie或其他有效的身份验证凭据。请参阅https://developers.google.com/identity/sign-in/web/devconsole-project.",…}

我不能确定我哪里做错了

请帮忙提前谢谢

Answer 1

我在api中传递的代码是OAuth代码（感谢John Hanley）

从OAuth Code生成访问令牌的API

Post : https://oauth2.googleapis.com/token
Content-Type: application/x-www-form-urlencoded
{
  "code":"OAuth Code",
  "client_id":"Client ID",
  "client_secret":"Client Secret",
  "redirect_uri":"http://localhost",
  "grant_type":"authorization_code"
}

作为回应，您收到

Response
{
"access_token": "Token",
"expires_in": 3599,
"refresh_token": "Refresh Token",
"scope": "https://www.googleapis.com/auth/dialogflow",
"token_type": "Bearer"
}

在google API的头中传递此访问令牌