来自Google NLP的演示应用无法正常工作 - “代码”：403

Question

Could some one help me with sample application from this site: https://cloud.google.com/natural-language/docs/quickstart-client-libraries#client-libraries-install-php. I did, at least I think I did, everything what is required. And I am constantly getting error 403:

Fatal error: Uncaught exception 'Google\Cloud\Core\Exception\ServiceException' with message '{ "error": { "code": 403, "message": "The request is missing a valid API key.", "status": "PERMISSION_DENIED" } } ' in C:\Users\Admin\Dropbox\HTDOCS
lp\vendor\google\cloud\Core\src\RequestWrapper.php:263 Stack trace: #0 

C:\Users\Admin\Dropbox\HTDOCS
lp\vendor\google\cloud\Core\src\RequestWrapper.php(168): Google\Cloud\Core\RequestWrapper->convertToGoogleException(Object(GuzzleHttp\Exception\ClientException)) #1 

C:\Users\Admin\Dropbox\HTDOCS
lp\vendor\google\cloud\Core\src\RestTrait.php(96): Google\Cloud\Core\RequestWrapper->send(Object(GuzzleHttp\Psr7\Request), Array) #2 

C:\Users\Admin\Dropbox\HTDOCS
lp\vendor\google\cloud\Language\src\Connection\Rest.php(69): Google\Cloud\Language\Connection\Rest->send('documents', 'analyzeSentimen...', Array) #3 

C:\Users\Admin\Dropbox\HTDOCS
lp\vendor\google\cloud\Language\src\LanguageClient.php(221): Google\Cloud\Language\Connection\Rest->analyzeSentiment(Array) #4 

C:\Users in C:\Users\Admin\Dropbox\HTDOCS
lp\vendor\google\cloud\Core\src\RequestWrapper.php on line 263 

Answer 1

You have to create a service account with permissions for this API, and then download a private key as a JSON file. It is mentioned in the tutorial you were following, but you can also do that via the command line like in here.

  $ gcloud iam service-accounts create my-account
  $ gcloud iam service-accounts keys create key.json
    --iam-account=[e-mail]
  $ export GOOGLE_APPLICATION_CREDENTIALS=key.json