生成令牌以调用 Dialogflow V2

Question

我需要调用 Dialogflow V2 APIs，但为此我需要生成一个令牌。我找到了很多关于如何执行此操作的代码，但对我不起作用。

我正在执行 API 生成令牌，然后将令牌传递给另一个 API 以调用 DialogFlow APIs。

任何人都可以帮助我如何生成令牌来调用 Dialogflow V2 APIs 吗？

我的API生成令牌代码如下：

const express = require('express');

const router = express.Router();

const googleAuth = require('google-oauth-jwt');

function generateAccessToken() {
        return new Promise((resolve) => {
                googleAuth.authenticate(
                        {
                                email: "<myemail>",
                                key: "<myprivatekey>",
                                scopes: "https://www.googleapis.com/auth2/v4/token",
                        },
                        (err, token) => {
                                resolve(token);
                        },
                );
        });
}

router.get('/token', async(req, res) => {
        try {
                let tok = await generateAccessToken();

                return res.status(200).send({ Token: tok});
        } catch(err) {
                return res.status(500).send({ error: 'Erro ao gerar token'});
        }
});

module.exports = app => app.use('/', router);

Answer 1

Dialogflow V2 不再使用 developer/client 访问令牌。您需要使用您的服务帐户密钥文件来访问 API。你可以关注this article to set up your service account. Once you have set up your service account, you can check the sample implementation of dialogflow using nodejs.

安装客户端库：

npm install @google-cloud/dialogflow

来自 github link 的代码片段：

const dialogflow = require('@google-cloud/dialogflow');
const uuid = require('uuid');

/**
 * Send a query to the dialogflow agent, and return the query result.
 * @param {string} projectId The project to be used
 */
async function runSample(projectId = 'your-project-id') {
  // A unique identifier for the given session
  const sessionId = uuid.v4();

  // Create a new session
  const sessionClient = new dialogflow.SessionsClient();
  const sessionPath = sessionClient.projectAgentSessionPath(projectId, sessionId);

  // The text query request.
  const request = {
    session: sessionPath,
    queryInput: {
      text: {
        // The query to send to the dialogflow agent
        text: 'hello',
        // The language used by the client (en-US)
        languageCode: 'en-US',
      },
    },
  };

  // Send request and log result
  const responses = await sessionClient.detectIntent(request);
  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.`);
  }
}

Answer 2

下面的代码对我返回 Bearer Token 有效：

const express = require('express');

const router = express.Router();

const googleAuth = require('google-oauth-jwt');
const {google} = require('googleapis');
const request = require('request');

async function generateAccessToken2() {
        const jwtClient = new google.auth.JWT(
                "<email serviceaccount>",
                null,
                "<Private Key>",["https://www.googleapis.com/auth/indexing","https://www.googleapis.com/auth/cloud-platform","https://www.googleapis.com/auth/dialogflow"],
                null
        );
        let tok = "";
        tok = jwtClient.authorize();
        return tok;
};

生成令牌以调用 Dialogflow V2

Generate Token to call Dialogflow V2

javascript

node.js

google-cloud-platform

dialogflow-es