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 methodOverride = require('method-override');

var app = express();

var server = require('http').Server(app);
var io = require('socket.io')(server);

server.listen(3000);

io.on('connection', function (socket) {
  socket.emit('news', { hello: 'world' });
  socket.on('my other event', function (data) {
    console.log(data);
  });
});


//jwt
app.set('sheldon', 'sheldon');

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


app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
//form put请求
app.use(methodOverride(function(req, res){
  if (req.body && typeof req.body === 'object' && '_method' in req.body) {
    var method = req.body._method
    delete req.body._method
    return method
  }
}));

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



//引入路由
var webRouter = require('./web_router');
app.use('/', webRouter);

// 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;