node-js-uploader-and-serve.js

/**
Instructions:

npm init
npm install cors express multer

node node-js-uploader-and-serve.js

OR

nodemon node-js-uploader-and-serve.js

tested on:
Node v10.3.0

├── cors@2.8.4
├── express@4.16.3
├── multer@1.3.0
*/

const express = require('express');
const multer  = require('multer');
const fs = require('fs');
const cors = require('cors');
const path = require('path');

const UPLOAD_PATH = 'uploads/';

const upload = multer({ dest: UPLOAD_PATH });

const app = express();
app.use(cors());

app.post('/photos/upload', upload.array('file', 6), function (req, res) {
  // req.files is array of `photos` files
  console.log(req.files);
  // req.body will contain the text fields, if there were any
  console.log(req.body);
  res.json({ data: req.files });
})

app.get('/photos/:id', async (req, res, next) => {
  fs.readFile(UPLOAD_PATH + req.params.id, function(err, data) {
    if (err) {
      res.send("Oops! Couldn't find that id.");
    } else {
      // set the content type based on the file
      res.contentType(req.params.id);
      res.send(data);
    }
    res.end();
  });
})


app.listen(7000, () => console.log('Uploader app listening on port 7000!'))