app.js

var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var flash = require('connect-flash');

//路由控制
var routes = require('./routes/index');

//mongodb配置
var settings = require('./setting');

var fs = require('fs');
var accessLog = fs.createWriteStream('access.log', {flags: 'a'});
var errorLog = fs.createWriteStream('error.log', {flags: 'a'});

var app = express();

//使用session
var session = require('express-session');
var MongoStore = require('connect-mongo')(session);
app.use(session({
    secret: settings.cookieSecret,
    key: settings.db,
    cookie: {maxAge: 1000 * 60 * 60 * 24 * 30},
    store: new MongoStore({
        // db: settings.db,
        // host: settings.host,
        // port: settings.port
        url: settings.url
    })
}));
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
app.use(flash());

// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: false}));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
routes(app);

//保存日志
app.use(function (err, req, res, next) {
    var meta = '[' + new Date() + ']' + req.url + '\n';
    errorLog.write(meta + err.stack + '\n');
    next();
});
app.use(logger({stream: accessLog}));

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

// error handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
    app.use(function (err, req, res, next) {
        res.status(err.status || 500);
        res.render('error', {
            message: err.message,
            error: err
        });
    });
}

// production error handler
// no stacktraces leaked to user
app.use(function (err, req, res, next) {
    res.status(err.status || 500);
    res.render('error', {
        message: err.message,
        error: {}
    });
});


module.exports = app;