how to post data in node.js with content type =’application/x-www-form-urlencoded’

request supports application/x-www-form-urlencoded and multipart/form-data form uploads. For multipart/related refer to the multipart API.

application/x-www-form-urlencoded (URL-Encoded Forms)

URL-encoded forms are simple:

const request = require('request');

request.post('http:/url/rest/login', {
  form: {
    username: 'xyzzzzz',
    password: 'abc12345#'
  }
})
// or
request.post('http:/url/rest/login').form({
  username: 'xyzzzzz',
  password: 'abc12345#'
})
// or
request.post({
  url: 'http:/url/rest/login',
  form: {
    username: 'xyzzzzz',
    password: 'abc12345#'
  }
}, function (err, httpResponse, body) { /* ... */ })

See: https://github.com/request/request#forms

Or, using request-promise

const rp = require('request-promise');
rp.post('http:/url/rest/login', {
  form: {
    username: 'xyzzzzz',
    password: 'abc12345#'
  }
}).then(...);

See: https://github.com/request/request-promise#api-in-detail