如何从api.ai(对话框流程)中获取用户输入并将其存储在mysql数据库中？

const express = require('express');
const bodyParser = require('body-parser');
const mysql = require('mysql');

const app = express();
app.use(bodyParser.json());

// 创建MySQL数据库连接
const connection = mysql.createConnection({
  host: 'localhost',
  user: 'your_username',
  password: 'your_password',
  database: 'your_database'
});

// 处理来自Dialogflow的POST请求
app.post('/dialogflow-webhook', (req, res) => {
  const userInput = req.body.queryResult.queryText;

  // 将用户输入插入到MySQL数据库中的表中
  const query = `INSERT INTO user_inputs (input_text) VALUES ('${userInput}')`;
  connection.query(query, (error, results) => {
    if (error) {
      console.error('Error inserting user input into MySQL:', error);
      res.status(500).json({ error: 'Internal Server Error' });
    } else {
      console.log('User input inserted into MySQL:', userInput);
      res.json({ fulfillmentText: 'User input stored in MySQL database.' });
    }
  });
});

// 启动服务器
app.listen(3000, () => {
  console.log('Server is running on port 3000');
});