无法访问Dialogflow应用程序的正确应用程序默认凭据

Question

我创建了一个具有并发gcloud应用程序的Dialogflow代理。但是，当我尝试将它集成到Node.js后端时，它似乎访问了错误的应用程序默认凭据。

我可以确认它正在验证身份验证是否成功，因为当我运行以下代码时，它的控制台记录了正确的项目ID(diagnosistest-56e81):

// Imports the Google Cloud client library.
const Storage = require('@google-cloud/storage')

// Instantiates a client. If you don't specify credentials when constructing
// the client, the client library will look for credentials in the
// environment.
const storage = new Storage();

// Makes an authenticated API request.
storage
  .getBuckets()
  .then((results) => {
    const buckets = results[0];

    console.log('Buckets:');
    buckets.forEach((bucket) => {
      console.log(bucket.name);
    });
  })
  .catch((err) => {
    console.error('ERROR:', err);
  })

// You can find your project ID in your Dialogflow agent settings
const projectId = 'diagnosistest-56e81'; //https://dialogflow.com/docs/agents#settings
const sessionId = 'quickstart-session-id';
const query = 'hello';
const languageCode = 'en-US';

// Instantiate a DialogFlow client.
const dialogflow = require('dialogflow');
const sessionClient = new dialogflow.SessionsClient();

// Define session path
const sessionPath = sessionClient.sessionPath(projectId, sessionId);

// The text query request.
const request = {
  session: sessionPath,
  queryInput: {
    text: {
      text: query,
      languageCode: languageCode,
    },
  },
};

// Send request and log result
sessionClient
  .detectIntent(request)
  .then(responses => {
    console.log('Detected intent');
    const result = responses[0].queryResult;
    console.log(`  Query: ${result.queryText}`);
    console.log(`  Response: ${result.fulfillmentText}`);
    if (result.intent) {
      console.log(`  Intent: ${result.intent.displayName}`);
    } else {
      console.log(`  No intent matched.`);
    }
  })
  .catch(err => {
    console.error('ERROR:', err);
  });

ERROR: { Error: 7 PERMISSION_DENIED: Dialogflow API has not been used in project 764086051850 before or it is disabled. Enable it by visiting https://console.developers.google.com/apis/api/dialogflow.googleapis.com/overview?project=764086051850 then retry. If you enabled this API recently, wait a few minutes for the action to propagate to our systems and retry.

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当我执行此操作时,会得到不同的错误消息：

ERROR: Error: Unexpected error while acquiring application default credentials: Could not load the default credentials. Browse to https://developers.google.com/accounts/docs/application-default-credentials for more information.

Answer 1

终于弄明白问题出在哪里了。在设置环境变量GOOGLE_APPLICATION_CREDENTIALS之后，您必须重新启动计算机，这样它才能生效！