express+mysql+vue,从零搭建一个商城管理系统7--token

提示：学习express，搭建管理系统

文章目录

前言
一、安装jsonwebtoken
二、新建config/jwt.js
三、修改models/user.js
四、修改routes下的user.js
五、修改index.js
六、Api新建user/queryUserList接口
七、token验证失败示例
总结

前言

需求：主要学习express，所以先写service部分

一、安装jsonwebtoken

npm install jsonwebtoken --save

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二、新建config/jwt.js

jwt.js

const jsonwebtoken = require('jsonwebtoken');
const secretKey = 'longlongago';
const jwt = {
    sign:(data,params,key)=>{
        return jsonwebtoken.sign(data,key||secretKey,{expiresIn:60*60,...params});
    },
    verify:(authorization,key)=>{
        let token = authorization.includes('Bearer')?authorization.replace('Bearer ',''):authorization;
        return jsonwebtoken.verify(token,key||secretKey,(err,data)=>{
            if(err)return {success:false,msg:'token验证失败'}
            return {success:true,msg:'token验证成功'}
        });
    },
}
module.exports = jwt;

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三、修改models/user.js

const query = require('../config/db');
const bcrypt = require('../config/bcrypt');
const md5 = require('md5');
const jwt = require('../config/jwt');
const secretKey = 'longlongago';

const errFun = (msg,code)=>{
    return {
        code:code||500,
        success:false,
        msg:msg||'操作失败'
    }
}
const sucFun = (data,msg)=>{
    return {
        code:200,
        success:true,
        msg:msg||'操作成功',
        data,
    }
}
const userDao = {
    //注册
    register:async(data)=>{
        //验证账号密码格式
        const validateResult =userDao.validateUserNameAndPassword(data);
        if(!validateResult.success)return errFun(validateResult.msg);
        //查询用户名是否已存在
        const userResult = await userDao.queryUserByUserName(data);
        if(userResult.success)return errFun('用户名已存在');
        //生成userId
        const userId = md5(data.userName+secretKey);
        //加密password
        const password = bcrypt.hash(data.password+secretKey);
        //根据userName查询user
        const sql = `insert into user (userId,userName,password) values('${userId}','${data.userName}','${password}')`;
        const result = await query(sql);
        if(result&&result.affectedRows==1)return sucFun({},'添加用户成功');
        return errFun('添加用户失败');
    },
    //登录
    login:async(data)=>{
        //验证账号密码格式
        const validateResult =userDao.validateUserNameAndPassword(data);
        if(!validateResult.success)return errFun(validateResult.msg);
        //查询用户是否存在
        const userResult = await userDao.queryUserByUserName(data);
        if(!userResult.success)return errFun('用户名错误');
        //验证密码是否正确
        const comparePassword = bcrypt.compare(data.password+secretKey,userResult.data.password);
        //生成token并返回
        userResult.data.token = jwt.sign(data);
        if(comparePassword)return sucFun(userResult.data,'登录成功');
        return errFun('密码错误');
    },
    //通过用户名查询用户信息
    queryUserByUserName:async(data)=>{
        //根据userName查询user
        const sql = `select * from user where userName='${data.userName}'`;
        const result = await query(sql);
        if(result&&result.length>0)return sucFun(result[0],'查询用户成功');
        return errFun('查询用户失败');
    },
    //验证用户名密码
    validateUserNameAndPassword:(data)=>{
        //只包含大小写字母数字,包含1种即可
        let nameReg = /[\da-zA-z]{6,16}$/;
        let nameValidate = nameReg.test(data.userName);
        if(!nameValidate)return errFun('用户名格式错误');
        //大写字母，小写字母，特殊符号，包含2种以上
        passwordReg = /^(?![\d]+$)(?![a-z]+$)(?![A-Z]+$)(?![~!@#$%^&*.]+$)[\da-zA-z~!@#$%^&*.]{6,16}$/;
        let passwordValidate = passwordReg.test(data.password);
        if(!passwordValidate)return errFun('密码格式错误');
        return sucFun({},'用户名和密码格式正确');
    },
    //获取用户列表
    queryUserList:async()=>{
        //根据userName查询user
        const sql = `select userId,userName from user`;
        const result = await query(sql);
        if(result&&result.length>0)return sucFun(result,'查询用户列表成功');
        return errFun('查询用户列表失败');
    },
}

module.exports = userDao;

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四、修改routes下的user.js

const userDao = require('../models/user');
const userRoutes = (router)=>{
    router.post('/user/register',async (req,res)=>{
        const result = await userDao.register(req.body);
        res.json(result);
    });
    router.post('/user/login',async (req,res)=>{
        const result = await userDao.login(req.body);
        res.json(result);
    });
    router.post('/user/queryUserList',async (req,res)=>{
        const result = await userDao.queryUserList(req.body);
        res.json(result);
    });
}
module.exports = userRoutes;

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五、修改index.js

const express = require('express');
const app = express();
const router = express.Router();
const jwt = require('./config/jwt');

const bodyParser = require('body-parser');
app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json());

const port = 1990;


//全局验证token
app.use('/*',(req,res,next)=>{
    let notValidateData = ['/user/login','/user/register'];
    if(notValidateData.indexOf(req.baseUrl)>-1)return next();
    if((jwt.verify(req.headers.authorization||'')||{}).success)return next();
    return res.json({success:false,code:500,msg:'token验证失败'});
})

//初始化路由
require('./routes/index')(router);

app.use('/', router);
app.listen(port,()=>{
    console.log('http://localhost:'+port);
})

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六、Api新建user/queryUserList接口

url:http://localhost:1990/user/login
name:/user/login
headers:{
“Authorization”:“eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VyTmFtZSI6Imxvbmdsb25nYWdvMSIsInBhc3N3b3JkIjoibG9uZzEyMzQ1NiIsImlhdCI6MTcwOTAzMzE2OCwiZXhwIjoxNzA5MDM2NzY4fQ.KMHlT7wi8APoQtidXMVbPlW_iFDJvFXz2f7HUclhAbA”,
}
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