app.js

var express = require('express');
var path = require('path');

var session = require('express-session');
// session 会话管理
var  MongoStore = require('connect-mongo')(session);
// 数据库连接驱动
var settings = require('./config/settings');
// 数据库配置文件
// var flash = require('connect-flash');

let multiparty =require('connect-multiparty');
// 文件上传模块
var favicon = require('serve-favicon');
var logger = require('morgan');


var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');

var index = require('./routes/index');
// 路由配置文件
var app = express();

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


// app.use(bodyParser({keepExtensions:true, uploadDir:'../public/images'}));
app.use(multiparty({uploadDir:'./public/images', keepExtensions: true}))
// 保留上传文件的后缀名，并把上传目录设置为 /public/images,主要用来上传图片

app.use(cookieParser());
app.use(session({
  secret: settings.cookieSecret,
    key: settings.db, // cookie name
    cookie: {maxAge: 1000*60*60*24*30}, // 30days
    store: new MongoStore({
	    url: 'mongodb://localhost/' + settings.db,
    })
}));


app.use(express.static(path.join(__dirname, '/public')));
// 将静态资源存在到 public 目录下

app.use('/', index);
// 将路由分发到 index 中

// 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 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');
});

app.listen(3000,function () {
	console.log("程序启动成功!");
	console.log("监听端口:" + 'localhost:3000')
});

module.exports = app;