Getting started with Node.js npm Web Apps With Express Filesystem I/O Exporting and Consuming Modules Exporting and Importing Module in node.js Installing Node.js MySQL integration Readline package.json Event Emitters Autoreload on changes Environment Callback to Promise Executing files or commands with Child Processes Cluster Module Exception handling Keep a node application constantly running Uninstalling Node.js nvm - Node Version Manager http Using Streams Deploying Node.js applications in production Securing Node.js applications Mongoose Library async.js File upload Socket.io communication Mongodb integration Handling POST request in Node.js Simple REST based CRUD API Template frameworks Node.js Architecture & Inner Workings Debugging Node.js application Node server without framework Node.JS with ES6 Interacting with Console Cassandra Integration Creating API's with Node.js Graceful Shutdown Using IISNode to host Node.js Web Apps in IIS CLI NodeJS Frameworks grunt Using WebSocket's with Node.JS metalsmith Parsing command line arguments Client-server communication Node.js Design Fundamental Connect to Mongodb Performance challenges Send Web Notification Remote Debugging in Node.JS Mysql Connection Pool Database (MongoDB with Mongoose)Good coding style Restful API Design: Best Practices Deliver HTML or any other sort of file TCP Sockets Hack Bluebird Promises Async/Await Koa Framework v2 Unit testing frameworks ECMAScript 2015 (ES6) with Node.js Routing ajax requests with Express.JS Sending a file stream to client NodeJS with Redis Using Browserfiy to resolve 'required' error with browsers Node.JS and MongoDB.Passport integration Dependency Injection NodeJS Beginner Guide Use Cases of Node.js Sequelize.js PostgreSQL integration How modules are loaded Node.js with Oracle Synchronous vs Asynchronous programming in nodejs Node.js Error Management Node.js v6 New Features and Improvement Eventloop Nodejs History passport.js Asynchronous programming Node.js code for STDIN and STDOUT without using any library MongoDB Integration for Node.js/Express.js Lodash csv parser in node js Loopback - REST Based connector Running node.js as a service Node.js with CORS Getting started with Nodes profiling Node.js Performance Yarn Package Manager OAuth 2.0 Node JS Localization Deploying Node.js application without downtime.Node.js (express.js) with angular.js Sample code NodeJs Routing Creating a Node.js Library that Supports Both Promises and Error-First Callbacks MSSQL Intergration Project Structure Avoid callback hell Arduino communication with nodeJs N-API Multithreading Windows authentication under node.js Require()Route-Controller-Service structure for ExpressJS Push notifications

Handling POST request in Node.js

Remarks:

Node.js uses streams to handle incoming data.

Quoting from the docs,

A stream is an abstract interface for working with streaming data in Node.js. The stream module provides a base API that makes it easy to build objects that implement the stream interface.

To handle in request body of a POST request, use the request object, which is a readable stream. Data streams are emitted as data events on the request object.

  request.on('data', chunk => {
    buffer += chunk;
  });
  request.on('end', () => {
    // POST request body is now available as `buffer`
  });

Simply create an empty buffer string and append the buffer data as it received via data events.

NOTE

Buffer data received on data events is of type Buffer
Create new buffer string to collect buffered data from data events for every request i.e. create buffer string inside the request handler.

Sample node.js server that just handles POST requests

'use strict';

const http = require('http');

const PORT = 8080;
const server = http.createServer((request, response) => {
  let buffer = '';
  request.on('data', chunk => {
    buffer += chunk;
  });
  request.on('end', () => {
    const responseString = `Received string ${buffer}`;
    console.log(`Responding with: ${responseString}`);
    response.writeHead(200, "Content-Type: text/plain");
    response.end(responseString);
  });
}).listen(PORT, () => {
  console.log(`Listening on ${PORT}`);
});

Contributors

Topic Id: 5676

Example Ids: 20130

This site is not affiliated with any of the contributors.