在heroku上遇到node.js应用程序时遇到问题

Question

I am trying to create a simple node.js app on heroku. Here is app.js:

 console.log("Starting App") const express = require('express') const app = express() const port = 3000 app.listen(process.env.PORT || port, () => console.log(`App listening on port ${port}!`)) app.get('/', (req,res) => { res.sendFile(__dirname+'/public/index.html') }) app.get('/style', (req,res) => { res.sendFile(__dirname+'/public/main.css') }) app.get('/script', (req,res) => { res.sendFile(__dirname+'/public/script.js') }) app.get('/changelog', (req,res) => { res.sendFile(__dirname+'/public/changelog.txt') }) 

here is my package.json file:

 { "name": "", "version": "0.0.0", "description": "", "main": "/App.js", "scripts": { "test": "echo \\"Error: no test specified\\" && exit 1" }, "author": "", "license": "ISC", "dependencies": { "express": "^4.16.4" } } 

and here is my Procfile:

web: node app.js

I am deploying this to heroku via github, and whenever I run the program it gives me an error, saying Cannot find module '/app/app.js' can anyone help me with this?

Edit: I have made everything lowercase and I still get this error: Error: Cannot find module '/app/app.js'

Answer 1

First, the name of the app is case sensitive - you use app.js in your description, and App.js in your package.json. They should be consistent, and the convention is lowercase.

Second, you don't need the forward slash.