Created
October 29, 2016 10:51
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NodeJS web server routes GET/POST
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| 'use strict'; | |
| const http = require('http'); | |
| const url = require('url'); | |
| const qs = require('querystring'); | |
| const port = 3000; | |
| /*Pure nodejs way of routing, an obj to provide methods as main key then routes with deep clone*/ | |
| let routes = { | |
| 'GET': { | |
| '/': (req, res) => { | |
| res.writeHead(200, {'Content-type': 'text/html'}); | |
| res.end('<h1>This is a Home Route</h1><h3>You can try some of the below routes by changing URL</h3><ul><li>/about</li><li>/api/getinfo</li></ul><h4>For <strong>/api/getinfo</strong> route you can add query for example "/api/getinfo?color=red&color=blue"</h4>') | |
| }, | |
| '/about': (req, res) => { | |
| res.writeHead(200, {'Content-type': 'text/html'}); | |
| res.end('<h1>This is a About Route</h1>') | |
| }, | |
| '/api/getinfo': (req, res) => { | |
| res.writeHead(200, {'Content-type': 'application/json'}); | |
| res.end(JSON.stringify(req.queryParams)); | |
| } | |
| }, | |
| /* For POST Methods, you require POSTMAN | |
| set form-urlencoded then set key & value as | |
| username & password in the body*/ | |
| 'POST': { | |
| '/api/login': (req, res) => { | |
| /*Body is to mimic a simple body-parser*/ | |
| let body = ''; | |
| req.on('data', data => { | |
| body += data; | |
| /*For image in binary form upload that exceeds 2mb | |
| destroy connections to stop file trfs, this will not crash server | |
| but if not connection is destroy only with writeHead, upload will continue */ | |
| if(body.length > 2000000) { | |
| res.writeHead(413, {'Content-type': 'text/html'}); | |
| res.end('<h3>Error: uploaded file size exceeds 2MB</h3>', | |
| () => req.connection.destroy()); | |
| } | |
| }); | |
| /*Allow query string to serialize the body*/ | |
| req.on('end', () => { | |
| let params = qs.parse(body); | |
| console.log('username: ',params['username']); | |
| console.log('password: ',params['password']); | |
| res.end(); | |
| }); | |
| } | |
| }, | |
| 'NA': (req, res) => { | |
| res.writeHead(404); | |
| res.end('Content not found!?') | |
| } | |
| } | |
| /*Similar to how express.router() | |
| there will always be a METHOD follow by pathname*/ | |
| function router(req, res) { | |
| let BASE_URL = url.parse(req.url, true); | |
| console.log(req.params); | |
| let resolveRoute = routes[req.method][BASE_URL.pathname]; | |
| if(resolveRoute != undefined){ | |
| req.queryParams = BASE_URL.query; | |
| resolveRoute(req, res); | |
| } else { | |
| routes['NA'](req, res); | |
| } | |
| } | |
| /*create Server*/ | |
| http.createServer(router).listen(port, () => { | |
| console.log(`listening on ${port}`); | |
| }); |
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