如何将 Dialogflow Fulfillment 与 MySQL DB 连接？

Question

我尝试在 GCP 上将我的 Dialogflow 代理与 MySQL 数据库连接，但效果不佳。 我只想在控制台中查看结果，但没有结果。 我只能看到结果“未定义”，但由于我不熟悉 Node.js，我不确定这意味着什么。 由于结果中没有内容，我无法进行下一步。

这是我的 index.js 脚本：

 // See https://github.com/dialogflow/dialogflow-fulfillment-nodejs // for Dialogflow fulfillment library docs, samples, and to report issues 'use strict'; const functions = require('firebase-functions'); const {WebhookClient} = require('dialogflow-fulfillment'); const {Card, Suggestion} = require('dialogflow-fulfillment'); const mysql = require('mysql'); process.env.DEBUG = 'dialogflow:debug'; // enables lib debugging statements exports.dialogflowFirebaseFulfillment = functions.https.onRequest((request, response) => { const agent = new WebhookClient({ request, response }); console.log('Dialogflow Request headers: ' + JSON.stringify(request.headers)); console.log('Dialogflow Request body: ' + JSON.stringify(request.body)); function welcome(agent) { agent.add(`Welcome to my agent!`); } function fallback(agent) { agent.add(`I didn't understand`); agent.add(`I'm sorry, can you try again?`); } function connectToDatabase() { const connection = mysql.createConnection({ host: '34.64.***.***', user: 'username', password: 'password', database: 'dbname' }); return new Promise((resolve,reject) => { connection.connect(); console.log('connection successed.'); resolve(connection); }); } function queryDatabase(connection, name){ return new Promise((resolve, reject) => { connection.query('SELECT * FROM tb_user WHERE name = ?', name, (error, results, fields) => { console.log('query successed.'); resolve(results); }); }); } function queryDatabase2(connection){ return new Promise((resolve, reject) => { connection.query('SELECT * FROM tb_user', (error, results, fields) => { if (error) console.log(error); console.log('results', results); }); }); } function handleReadFromMysql(agent) { const user_name = agent.parameters.name; console.log(user_name.name); return connectToDatabase() .then(connection => { console.log('connectToDatabase passed'); return queryDatabase(connection, user_name.name) //return queryDatabase2(connection) .then(result => { console.log('queryDatabase passed'); console.log(result); agent.add(`User name is ${user_name} .`); //result.map(user => { //if(user_name === user.name) { //agent.add(`UserID is ${user.id}`); //} //}); connection.end(); }); }); } let intentMap = new Map(); intentMap.set('Default Welcome Intent', welcome); intentMap.set('Default Fallback Intent', fallback); intentMap.set('findName', handleReadFromMysql); agent.handleRequest(intentMap); });

日志是：

在此处输入图片说明

请有人帮我...

Answer 1

我在 4 个月前解决了这个问题，所以我分享了我的代码来帮助像我这样的人。

我使用数据库信息的 socketPath。 我忘记了原因。

function connectToDatabase() {
    const connection = mysql.createConnection({
        socketPath: '/cloudsql/*************:asia-northeast3:****',
        user: '****',
        password: '****',
        database: '****'
    });
    return new Promise((resolve, reject) => {
        connection.connect();
        console.log('connection successed.');
        resolve(connection);
    });
}

并使查询功能如：

function findNameCountQuery(connection, name) {
return new Promise((resolve, reject) => {
    var sql = `SELECT * FROM tb_user WHERE name = ?`;
    var execSql = connection.query(sql, [name], (error, results) => {
        if (error) throw error;
        resolve(results);
    });
});

然后我使用代理功能，如：

async function findName(agent) {
    const user_name = agent.parameters.person.name;
    const connection = await connectToDatabase();
    const result = await findNameQuery(connection, user_name);
    result.map(user => {
        message += `사용자 ID seq number : ${user.seq}\n`;
    });

    agent.add(message);
    connection.end();
}

希望有所帮助。