egg实现登录鉴权（二）：连接数据库（mysql）

前一篇实现了基本的生成token和验证token的功能，这其实并没什么用。这一篇主要实现对数据库里的人员进行验证。

需求

- user表中存在该nickname，生成token返回
- user表中不存在该nickname，返回{code:'404',msg:'不存在该人员'}

查询

- 查询所有user，无需传token
- 通过id查询指定user，需要传token

状态码

- 201：成功
- 404：不存在
- 400：业务逻辑错误

实现

数据库表没有变，依旧只有一张user表

- 数据库名称（database）：test，用户名（user）：root，密码（password）：123456

在egg实现登录鉴权（一）的基础之上继续安装依赖包

- npm install --save egg-cors egg-jwt

config/config.default.js

/* eslint valid-jsdoc: "off" */

‘use strict’;

@param {Egg.EggAppInfo} appInfo app info
/
module.exports = appInfo => {
/*
- built-in config
- @type {Egg.EggAppConfig}
  /
  const config = exports = {};

// use for cookie sign key, should change to your own and keep security
config.keys = appInfo.name + ‘_1576461360545_5788’;

// add your middleware config here
config.middleware = [];
config.jwt = {
secret: ‘123456’,
};
// 安全配置（https://eggjs.org/zh-cn/core/security.html）
config.security = {
csrf: {
enable: false,
ignoreJSON: true,
},
// 允许访问接口的白名单
domainWhiteList: [ ‘http://localhost:8080’ ],
};
// 跨域配置
config.cors = {
origin: ‘*’,
allowMethods: ‘GET,HEAD,PUT,POST,DELETE,PATCH’,
};
config.sequelize = {
dialect: ‘mysql’,
host: ‘127.0.0.1’,
port: ‘3306’,
user: ‘root’,
password: ‘123456’,
database: ‘test’,
define: {
underscored: true,
freezeTableName: true,
},
};
// add your user config here
const userConfig = {
// myAppName: ‘egg’,
};

return {
…config,
…userConfig,
};
};

config/plugin.js

'use strict';

/ @type Egg.EggPlugin */
module.exports = {
jwt: {
enable: true,
package: ‘egg-jwt’,
},
cors: {
enable: true,
package: ‘egg-cors’,
},
sequelize: {
enable: true,
package: ‘egg-sequelize’,
},
};

app/model/user.js

'use strict';

module.exports = app => {
const { STRING, INTEGER } = app.Sequelize;
const User = app.model.define(‘user’, {
id: { type: INTEGER, primaryKey: true, autoIncrement: true },
nickname: STRING(20),
}, {
timestamps: false,
});
return User;
};

app/controller/user.js

'use strict';

const Controller = require(‘egg’).Controller;

class UserController extends Controller {
// 登录
async login() {
const { ctx, app } = this;
const data = ctx.request.body;
// 判断该用户是否存在
const isValid = await ctx.service.user.isValidUser(‘nickname’, data.nickname);
if (isValid) {
const token = app.jwt.sign({
nickname: data.nickname,
}, app.config.jwt.secret);
ctx.body = token;
} else {
ctx.body = { code: 404, msg: ‘不存在该用户’ };
}
}
// 获取所有用户
async index() {
const { ctx } = this;
ctx.body = await ctx.service.user.getUser();
}
// 通过id获取用户
async show() {
const { ctx } = this;
ctx.body = await ctx.service.user.getUser(ctx.params.id);
}
}

module.exports = UserController;

app/service/user.js

'use strict';

const Service = require(‘egg’).Service;

function toInt(str) {
if (typeof str === ‘number’) return str;
if (!str) return str;
return parseInt(str, 10) || 0;
}

class UserService extends Service {
// 查询test数据库user表，验证是否存在该用户
async isValidUser(key, value) {
const data = await this.getUser();
for (const item of data) {
if (item[key] === value) return true;
}
return false;
}
// 获取用户，不传id则查询所有
async getUser(id) {
const { ctx } = this;
const query = { limit: toInt(ctx.query.limit), offset: toInt(ctx.query.offset) };
if (id) {
return await ctx.model.User.findByPk(toInt(id));
}
return await ctx.model.User.findAll(query);
}
}
module.exports = UserService;

app/router.js

'use strict';

@param {Egg.Application} app - egg application
*/
module.exports = app => {
const { router, controller, jwt } = app;
router.get(’/’, controller.home.index);

router.post(’/user/login’, controller.user.login);
// 查询不做鉴权
router.get(’/user’, controller.user.index);
router.get(’/user/:id’,jwt, controller.user.show);
};

package.json

{
  "name": "jwt",
  "version": "1.0.0",
  "description": "",
  "private": true,
  "egg": {
    "declarations": true
  },
  "dependencies": {
    "egg": "^2.15.1",
    "egg-cors": "^2.2.3",
    "egg-jwt": "^3.1.7",
    "egg-scripts": "^2.11.0",
    "egg-sequelize": "^5.2.0",
    "mysql2": "^2.0.2"
  },
  "devDependencies": {
    "autod": "^3.0.1",
    "autod-egg": "^1.1.0",
    "egg-bin": "^4.11.0",
    "egg-ci": "^1.11.0",
    "egg-mock": "^3.21.0",
    "eslint": "^5.13.0",
    "eslint-config-egg": "^7.1.0"
  },
  "engines": {
    "node": ">=10.0.0"
  },
  "scripts": {
    "start": "egg-scripts start --daemon --title=egg-server-jwt",
    "stop": "egg-scripts stop --title=egg-server-jwt",
    "dev": "egg-bin dev",
    "debug": "egg-bin debug",
    "test": "npm run lint -- --fix && npm run test-local",
    "test-local": "egg-bin test",
    "cov": "egg-bin cov",
    "lint": "eslint .",
    "ci": "npm run lint && npm run cov",
    "autod": "autod"
  },
  "ci": {
    "version": "10"
  },
  "repository": {
    "type": "git",
    "url": ""
  },
  "author": "",
  "license": "MIT"
}

自测

查询所有

查询指定id的人员

参考

分类: node系列

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<a href="https://www.cnblogs.com/xingguozhiming/p/12047952.html" class="p_n_p_prefix">« </a> 上一篇：    <a href="https://www.cnblogs.com/xingguozhiming/p/12047952.html" title="发布于 2019-12-16 10:51">egg实现登录鉴权（一）：生成token</a>
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转载：https://www.cnblogs.com/xingguozhiming/p/12053348.html

egg实现登录鉴权（二）：连接数据库（mysql）

需求

实现

自测

参考

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