Nodejs express image server and qr image server07.01.18

var path    = require('path');
var gm      = require( 'gm' );
var express = require('express');
var fs      = require('fs');
var qr      = require('qrcode')
var app     = express();

var mime = {
    html: 'text/html',
    txt: 'text/plain',
    css: 'text/css',
    gif: 'image/gif',
    jpg: 'image/jpeg',
    png: 'image/png',
    svg: 'image/svg+xml',
    js: 'application/javascript'
};

app.get("/qr/*", function (req, res) {
    qr.toDataURL('hello', function (err, url) {
    var data = url.replace(/^data:image\/\w+;base64,/, '');
    var img = new Buffer(data,'base64');
    res.writeHead(200, {
      'Content-Type': 'image/png',
      'Content-Length': img.length
    });
    res.end(img);
  });
});

app.get("/", function (req, res) {
var gm = require( 'gm');
gm(200, 200, '#000F')
    .setFormat('png')
    .fill('black')
    .drawCircle( 50, 50, 60, 80 )
    .toBuffer(function( error, buffer )
    {
      if(error)
      {
        console.log( error );
      }
      res.setHeader('Content-Type', 'image/png');
      res.setHeader('Content-Length', Buffer.byteLength(buffer));
      res.writeHead(200);
      res.end(buffer);
    }
);

});

app.listen(3000, function () {
    console.log('Listening on http://localhost:3000/');
});

https://github.com/soldair/node-qrcode

Anonymous

07.01.18

Anonymous

Nodejs express image server and qr image server07.01.18

Information Epoch 1760603318