javascript - 找不到模块express

Question

我尝试运行快速应用程序，但收到以下错误:

module.js:471 throw err; ^

Error: Cannot find module './controllers'

这是我的 app.js:

const express = require('express');
//let passport = require('passport');
//let session = require('express-session');
const app = express();


app.use(express.static(__dirname + '/public'));
app.use(express.json());
app.use(express.urlencoded({extended:false}));

app.get('/', (req, res) => {
  res.redirect('index.html');
});

app.post('/', (req, res) => {
})

app.use('/',require('./controllers'));

/*
app.use(express.session({ secret: 'keyboard cat' }));
app.use(passport.initialize());
app.use(passport.session());
*/
app.listen(3000);

我想知道为什么我会收到此错误

这是我的应用程序结构:

Answer 1

当您需要这样的目录时:

app.use('/', require('./controllers'));

...从技术上讲，您正在寻找./controllers/index.js:

您必须添加文件名，例如:

app.use('/', require('./controllers/route'));