egg.js【3 连接接数据库】

安装插件

$ npm i egg-mysql --save

配置
配置书写方法见egg.js 2

//在 config/plugin.js

mysql: {
  enable: true,
  package: 'egg-mysql',
  
//在config/config-default.js  

config.mysql = {
  // database configuration
  client: {
    // host
    host: 'mysql.com',
    // port
    port: '3306',
    // username
    user: 'test_user',//账号
    // password
    password: 'test_password', //密码
    // database
    database: 'test',    
  },
  // load into app, default is open
  app: true,
  // load into agent, default is close
  agent: false,
};
};

首先重新启动后台项目
在controller/articels

const Controller = require('egg').Controller

class ArticlesController extends Controller {
  async articles() {
    const { ctx } = this
    var result = await ctx.service.articles.article()
    console.log(result)
    ctx.body = {
      code: 1,
      msg: 'success',
      data: result
    }
  }
}

module.exports = ArticlesController

然后在 文件夹 app 里 新建 serveice 文件夹 在里面写 跟接口相同名称的js文件

// app/service/articles
const Service = require('egg').Service;

class ArticleService extends Service {
  async article( ) {
    const { app } = this
	var result = app.mysqle.get('articles')
	return result
    
    });
    module.exports = ArticeService