Using Fetch to put JSON in body of document - Javascript

slightly different solution worked for me. body-parser does not handle multipart/form-data bodies

client side fetch call sends data to express:

fetch('api/users', {  headers: { 'Content-Type': 'application/json' }, // tells the server we have json  method:'PUT', // can be POST  body: JSON.stringify(results), // json is sent to the server as text})

server side express app listens for application/json and parses it to json:

const express = require('express')const app = express()// parse application/jsonapp.use(bodyParser.json())

After setting up the bodyParser I defined an express middleware function

app.put('/api/:collection', (req, res) => {  logger.log('put', req.body)  // ...})

the req.body is json.

Normally, you're going to have to read from the req like a stream. Something like this:

var body = '';req.on('data', function (chunk) {  body += chunk;});req.on('end', function () {  console.log(JSON.parse(body));});

A better solution is to use the body-parser middleware.

It will be better to use body-parser middleware for post method.

for example pseudocode: (in ES6 format)

including body-parser:

import bodyParser from 'body-parser';const urlEncode = bodyParser.urlencoded({extended: false});

now, use that on api post request like this:

app.post('/something_url', urlEncode, (req, res) => { ...your code here...});