Check the body of a post request and save in a file

checkBody.js

var express = require('express');
var app = express();
var bodyParser = require('body-parser')
var fs = require('fs');

   // to support JSON-encoded bodies
// app.use(bodyParser.urlencoded({     // to support URL-encoded bodies
//   extended: true
// })); 
app.use(bodyParser.json({limit: '50mb'}));
app.use(bodyParser.urlencoded({limit: '50mb', extended: true}));

app.post('/', function (req, res) {
    console.log(req.headers);
    console.log(req.body);
    
    fs.writeFile(Date(), JSON.stringify(req.body), function(err) {
        if(err) {
            return console.log(err);
        }
    
        console.log("The file was saved!");
    }); 
    
  res.send('Hello World!');
});

app.listen(8080, function () {
  console.log('Example app listening on port 3000!');
});