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Nodejs generates QR code (the simplest)

php中世界最好的语言
php中世界最好的语言 Original
2018-05-10 14:17:44 3662browse

这次给大家带来nodejs生成二维码(最简洁),nodejs生成二维码的注意事项有哪些,下面就是实战案例,一起来看一下。

一开始使用node-qrcodehttps://github.com/soldair/node-qrcode),结果安装的时候需要安装python,且不支持python3.0以上,安装python2.0的时候又需要安装其他的环境,所以放弃了。

最后选择了一个小众的插件qr-image(https://github.com/alexeyten/qr-image)

前台页面如下

views/index.ejs

   <%= title %>  

<%= title %>

后端代码:

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('

414 Request-URI Too Large

'); } })

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