Node js忽略未捆绑的中间件

Question

我对不再与 NODE.js 绑定的中间件有一些问题我做的就像这里：

Node js Error: Most middleware (like session) is no longer bundled with Express and must be installed separately

但我仍然遇到同样的错误："Most middleware bla bla bla..."

var express = require('express');
var mongoose = require('mongoose');
var path = require('path');
var bodyParser = require('body-parser');
var config = require('config');
var session = require('express-session');

var app = express();
var IS_DEV = (app.get('env') === 'development');
var MongoStore = require('connect-mongo')(express);

app.use(session({
  secret: config.get('session:secret'),
  key: config.get('session:key'),
  cookie: config.get('session:cookie'),
  store: new MongoStore({mongoose_connection: mongoose.connection})
}));

软件包已安装，我在 node_modules 文件夹中看到它。而且我没有看到任何错误，例如：session is undefined 我做错了什么？

顺便说一句，express-error-handler 包

windows 8.1
节点 4.4.0
mongodb 3.2.4
npm 2.14.20
快递4.13.4

回复：

Error: Most middleware (like session) is no longer bundled with Express and must be installed separately. Please see https://github.com/senchalabs/connect#middleware.
[1]     at Function.Object.defineProperty.get (C:\Work\todoapp\node_modules\express\lib\express.js:99:13)
[1]     at connectMongo (C:\Work\todoapp\node_modules\connect-    mongo\src\index.js:48:43)
[1]     at Object.<anonymous> (C:\Work\todoapp\app.js:10:42)
[1]     at Module._compile (module.js:409:26)
[1]     at Object.Module._extensions..js (module.js:416:10)
[1]     at Module.load (module.js:343:32)
[1]     at Function.Module._load (module.js:300:12)
[1]     at Module.require (module.js:353:17)
[1]     at require (internal/module.js:12:17)
[1]     at Object.<anonymous> (C:\Work\todoapp\bin\www:7:11)
[1]     at Module._compile (module.js:409:26)
[1]     at Object.Module._extensions..js (module.js:416:10)
[1]     at Module.load (module.js:343:32)
[1]     at Function.Module._load (module.js:300:12)
[1]     at Function.Module.runMain (module.js:441:10)
[1]     at startup (node.js:139:18)
[1]     at node.js:968:3
[1] Program node --debug ./bin/www exited with code 1
[1]

Answer 1

由于您使用的是 Express 4，connect-mongo 的设置不正确。

应该是：

var session = require('express-session');
...
var MongoStore = require('connect-mongo')(session);
                                          ^^^^^^^ not `express`

参见the documentation。

Node js忽略未捆绑的中间件

Node js ignoring unbundled middleware

javascript

middleware

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express