app.js

// 引入 Express
const express = require('express');
// 创建服务器
const app = express();
const path = require('path');
const session = require('express-session');
const MongoStore = require('connect-mongo')(session);
const config = require('config');

const bodyParser = require('body-parser');
const artTemplate = require('art-template');
const dateFormat = require('dateformat');
const morgam = require('morgan');
artTemplate.defaults.imports.dateFormat = dateFormat;

require('./model/connect');
// require('./model/user');

app.use(session({
    secret: 'keyboard cat',
    saveUninitialized: false,
    resave: false,
    cookie: {
        maxAge: 24 * 60 * 60 * 1000 // 一天
    },
    store: new MongoStore({
        url: `mongodb://${config.get('db.user')}:${config.get('db.pwd')}@${config.get('db.host')}:${config.get('db.port')}/${config.get('db.name')}`,
        autoRemoveInterval: 5
    })
}));

app.use(bodyParser.urlencoded({extended: false}));

// 模板引擎相关配置
app.engine('art', require('express-art-template'));
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'art');

// 静态资源访问
app.use(express.static(path.join(__dirname, 'public')));

if(process.env.NODE_ENV === 'development') {
    // 开发环境
    app.use(morgam('short'));
} else {
    // 生产环境
}

const home = require('./route/home');
const admin = require('./route/admin');

// 路由守卫，没有登录的情况下禁止访问后台界面
app.use('/admin', require('./middleware/loginGuard'));

// 前台相关的路由
app.use('/admin', admin);
// 后台相关的路由
app.use('/home', home);

// 错误捕获
app.use((err, req, res, next) => {
    const errs = JSON.parse(err);
    let arr = [];
    // {path: '/admin', id: 'dfds', message: 'fdsf'}
    for(let attr in errs) {
        if(attr !== 'path') {
            // [path='/admin', 'message='fsdffds']
            arr.push(`${attr}=${errs[attr]}`);
        }
    }
    return res.redirect(`${errs.path}?${arr.join('&')}`);
});

// 404 Not Found
app.use((req, res) => {
    res.redirect('/home');
});

app.listen(3000, () => console.log('server listen on: http://localhost:3000'));