app.js

let express = require('express'),
    path = require('path'),
    favicon = require('serve-favicon'),
    logger = require('morgan'),
    cookieParser = require('cookie-parser'),
    session = require('express-session'),
    bodyParser = require('body-parser'),
    mongoose = require('mongoose'),
    secret = require('./config').secret,
    index = require('./routes/index'),
    api = require('./routes/api'),
    passport = require('passport'),
    MongoStore = require('connect-mongo')(session),
    cors = require('cors'),
    app = express();

mongoose.connect('mongodb://localhost/sacc');

require('./lib/passport');

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

// uncomment after placing your favicon in /public
app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json({limit: '1mb'}));
app.use(bodyParser.urlencoded({extended: true}));

// cookie 和 session
app.use(cookieParser(secret));
app.use(session({
    secret: secret,
    resave: false,
    saveUninitialized: true,
    cookie: {
        maxAge: 24 * 60 * 60 * 1000
    },
    store: new MongoStore({mongooseConnection: mongoose.connection})
}));

app.use(passport.initialize());
app.use(passport.session());

app.use(express.static(path.join(__dirname, 'public')));

app.use('/', index);
app.use('/api', api);

// catch 404 and forward to error handler
app.use(function (req, res, next) {
    let err = new Error('Not Found');
    err.status = 404;
    next(err);
});

// error handler
app.use(function (err, req, res, next) {
    // set locals, only providing error in development
    res.locals.message = err.message;
    res.locals.error = req
        .app
        .get('env') === 'development'
        ? err
        : {};
    // render the error page
    res.status(err.status || 500);
    res.render('error');
});

module.exports = app;