我正在使用 express 4.0，并且我知道正文解析器已从 express 核心中取出，我正在使用推荐的替换，但是我得到了

body-parser deprecated bodyParser: use individual json/urlencoded middlewares server.js:15:12 body-parser deprecated urlencoded: explicitly specify "extended: true" for extended parsing node_modules/body-parser/index.js:74:29

我在哪里可以找到这个所谓的中间件？还是我不应该收到这个错误？

var express     = require('express');
var server      = express();
var bodyParser  = require('body-parser');
var mongoose    = require('mongoose');
var passport    = require('./config/passport');
var routes      = require('./routes');

mongoose.connect('mongodb://localhost/myapp', function(err) {
    if(err) throw err;
});

server.set('view engine', 'jade');
server.set('views', __dirname + '/views');

server.use(bodyParser()); 
server.use(passport.initialize());

// Application Level Routes
routes(server, passport);

server.use(express.static(__dirname + '/public'));

server.listen(3000);