const res = await ctx.service.product.index();

老师讲的重点是什么呢

const db_data = await ctx.service.product.index();

'use strict';

// import { log } from '../utils/log';

const log = console.log;

const Service = require('egg').Service;

class ProductService extends Service {

// DB SQL

async find(uid) {

const product = await this.ctx.db.query('select * from product where uid = ?', uid);

return product;

}

}

module.exports = ProductService;

DB

MySQL / MongoDB

Service

https://eggjs.org/zh-cn/basics/service.html