javascript - 如何使用expressjs连接？

Question

var express = require('express'),
    routes = require('./routes'),
    http = require('http'),
    path = require('path'),
    fs = require('fs');

var app = express();

app.set('port', process.env.PORT || 3000);
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

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

app.get('/', routes.index);

http.createServer(app).listen(app.get('port'), function(){
  console.log('Express server listening on port ' + app.get('port'));
});

我收到错误大多数中间件(如 json)不再与...捆绑在一起
我已在同一文件夹中 npm 安装了 connect。
但我该如何使用它呢？

我找不到任何有关 connect 和 express 的组合教程，他们要么谈论 connect，要么谈论 express。

Answer 1

引自Express.js's middleware documentation ,

As of 4.x, Express no longer depends on Connect. All of Express' previously included middleware are now in separate repos. Please view the list of middleware. The only included middleware is now express.static().

因此，要使用 json 中间件，您需要包含 body-parser在 package.json 中，然后像这样使用

var bodyParser = require('body-parser');
app.use(bodyParser.json());