Nodejs super simple method to generate QR code
This article mainly introduces nodejs to achieve a super simple method of generating QR codes, and analyzes the related operating skills of nodejs based on the qr-image plug-in to generate QR codes in the form of examples. Friends who need it can refer to it and use it at the beginning. node-qrcode（https://github.com/soldair/node-qrcode），As a result, you need to install python when installing, and it does not support python3.0 or above. You need to install it when installing python2.0 Other environments, so I gave up.
Finally chose a niche plug-inqr-image（https://github.com/alexeyten/qr-image）
The front page is as follows
views/index.ejs
<!DOCTYPE html> <html> <head> <title><%= title %></title> <link rel='stylesheet' href='/stylesheets/style.css'/> </head> <body> <h1><%= title %></h1> <img src="/create_qrcode?text=http://blog.csdn.net/fo11ower"/> </body> </html>
Backend code:
routes/index. js
var qr = require('qr-image')
router.get('/', function (req, res, next) {
res.render('index', {title: 'Express'});
});
router.get('/create_qrcode', function (req, res, next) {
var text = req.query.text;
try {
var img = qr.image(text,{size :10});
res.writeHead(200, {'Content-Type': 'image/png'});
img.pipe(res);
} catch (e) {
res.writeHead(414, {'Content-Type': 'text/html'});
res.end('<h1>414 Request-URI Too Large</h1>');
}
})Related recommendations:
JS method to generate a QR code from a link and convert it into an image
phpqrcode class generates QR code method
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