GMail API“前提条件检查失败。”当尝试列出消息时

Question

问题

我正在尝试通过官方 Google .NET 库使用 GMail API。我正在使用 razor 页面构建 ASP .NET 8 应用程序。我设法让用户登录并将令牌存储在数据库中。我还可以从数据库检索令牌，并根据我存储的刷新令牌获取新的访问令牌。但是，当我尝试检索消息时，我收到“BAD Request”响应：

{
  "error": {
    "code": 400,
    "message": "Precondition check failed.",
    "errors": [
      {
        "message": "Precondition check failed.",
        "domain": "global",
        "reason": "failedPrecondition"
      }
    ],
    "status": "FAILED_PRECONDITION"
  }
}

我尝试过的事情

首先我请求一个新的访问令牌：

https://oauth2.googleapis.com/token
User-Agent = google-api-dotnet-client/1.68.0.0; User-Agent = (gzip)
refresh_token=***&grant_type=refresh_token&client_id=***.apps.googleusercontent.com&client_secret=***

哪个成功：

{
  "access_token": "***",
  "expires_in": 3599,
  "scope": "https://www.googleapis.com/auth/gmail.readonly https://www.googleapis.com/auth/userinfo.profile openid https://www.googleapis.com/auth/userinfo.email",
  "token_type": "Bearer",
  "id_token": "***"
}

之后我尝试请求消息：

https://gmail.googleapis.com/gmail/v1/users/me/messages
User-Agent = ConsographKengraAdapterGoogle; User-Agent = google-api-dotnet-client/1.68.0.0; User-Agent = (gzip); x-goog-api-client = gl-dotnet/8.0.0 gdcl/1.68.0.3399; Authorization = Bearer ***

由于上述错误响应而失败：

{
  "error": {
    "code": 400,
    "message": "Precondition check failed.",
    "errors": [
      {
        "message": "Precondition check failed.",
        "domain": "global",
        "reason": "failedPrecondition"
      }
    ],
    "status": "FAILED_PRECONDITION"
  }
}

我不确定可能是什么问题。

Answer 1

您的请求格式正确吗？