Nodejs generates QR code (the simplest)
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-qrcode（https://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
<!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>
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('<h1>414 Request-URI Too Large</h1>');
}
})相信看了本文案例你已经掌握了方法，更多精彩请关注php中文网其它相关文章！
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