JavaScript Node.js - how to inspect request data? node inspect websockets request was expected,inspect request node.js

If you working with express then the simple request will not provide your desired data if you print the request.

req.body Contains key-value pairs of data submitted in the request body. By default, it is undefined and is populated when you use body-parsing middleware such as body-parser and multer.

This is what mention in documentation and recommended by Express Framework https://expressjs.com/en/api.html

so if you want to inspect it in express do some thing like this

var app = 

require('express')();
var bodyParser = require('body-parser');
var multer = require('multer'); // v1.0.5
var upload = multer(); // for parsing multipart/form-data

app.use(bodyParser.json()); // for parsing application/json
app.use(bodyParser.urlencoded({ extended: true })); // for parsing application/x-www-form-urlencoded

app.post('/registerUser', function (req, res) {
  console.log(req.body); //console.log(req)
  res.json(req.body); //res.send("hello world post")
});

You can also inspect your request with out using express framework or body parser. here i am posting just simple example to print post body on every request

var http =

 require("http");

http.createServer(function (request, response) {
     request.on('data', function(chunk) {
        var bodydata = chunk.toString('utf8');
        console.log(bodydata)
    });
   response.writeHead(200, {'Content-Type': 'text/plain'});
   response.end('hi welcome\n');
}).listen(8081);
console.log('Server running at http://127.0.0.1:8081/');

this is how will look if you use bodyparser and express

here is body is you use body parser and express

enter image description here

enter image description here

Here is my post request

enter image description here

here is my output converting buffer into string

enter image description here

here is my simple node request with out using express which contain data event

enter image description here

data as buffer in req

enter image description here

Answer:1

This is basically how Express works:

var express = require('express'),
    bodyparser = require('body-parser');

var app = express();

// Middleware
app.use(bodyparser.urlencoded({extended: false}));

app.get('/foo', function (req, res) {
  // GET /foo?msg=hello ---> {msg: 'hello'}
  console.log(req.query);
});

app.post('/bar', function (req, res) {
  // POST msg=hello ---> {msg: 'hello'}
  console.log(req.body);
});

app.listen(3000);
Answer:2

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