数字海洋托管的node.js / express应用显示无法获取/错误

Question

After looking online and seeing countless different answers to different situations, I still couldn't find a solution that worked for me. When I try to run my server.js file locally, it works fine. But when I copy my repository and tried running it in my droplet I get this error:

Cannot GET /

The following is my server.js code:

const express = require('express')
const path = require('path')
const history = require('connect-history-api-fallback')

const app = express()

const staticFileMiddleware = express.static(path.join(__dirname + '/dist'))

app.use(staticFileMiddleware)
app.use(history({
  disableDotRule: true,
  verbose: true
}))
app.use(staticFileMiddleware)

app.get('/', function (req, res) {
  res.render(path.join(__dirname + '/dist/index.html'))
})

var server = app.listen(process.env.PORT || 80, function () {
  var port = server.address().port
  console.log('App now running on port', port);
  console.log(path.join(__dirname + '/dist/index.html'));
})

Answer 1

I recommend starting with an auto-generated express project by doing:

npm install -g express-generator
express --view=jade new-project-folder-name

... if you do that then DEBUG=* node bin/www will launch the project on port 3000 with all debug enabled.

Practically speaking you probably don't actually want to launch your express project on port 80, but rather, you'd want to use a proper web server like Nginx or Apache, and then configure it as a reverse proxy to your express application on a local port (like 3000). Also use UFW to reduce the security surface area of your server.

That way you can also use Lets Encrypt to let the web server manage all the SSL business and leave your express application to just worry about its business.

For a start though, just try launching your project on port 3000 and visiting the site at http://your-ip-address:3000 and see if you get a different result. If you do, you probably need to use the internet to piece together a solution that looks similar to what I described above. Digital Ocean tutorials are pretty good in this regard.

Answer 2

The problem was that when I cloned my repository, it didn't push my dist folder. So the solution to my problem was to create a separate repo and push my dist folder manually. I then used this repo to serve my app on my droplet.