javascript 如何在没有画布的情况下在 Node.js 中生成 QR 图像？

How can I generate QR images in Node.js without canvas?

提问by CherryNerd

I'm building a website for a client in Node.js and I need to generate QR-codes or Barcodes for the ticket system.

我正在用 Node.js 为客户建立一个网站，我需要为票务系统生成二维码或条形码。

I've found a few modules, but all of them need an install like canvas, one way or another.

我找到了一些模块，但它们都需要像画布这样的安装，以一种或另一种方式。

I'm on a shared hosting package and my host does not allow me to install any such packages, unless I upgrade to a VPS or dedicated server (which I do not have the money for).

我在共享主机包上，我的主机不允许我安装任何此类包，除非我升级到 VPS 或专用服务器（我没有钱）。

Does any of you know how I can pull this off in Node.js or do I need to put up a subdomain for generating the QR in PHP or front-end generating (which I do not prefer AT ALL)?

你们有没有人知道我如何在 Node.js 中实现这一点，或者我是否需要建立一个子域来在 PHP 或前端生成中生成 QR（我根本不喜欢）？

Currently using:

目前使用：

• Node.js
• Express.js
• Angular.js

• 节点.js
• Express.js
• Angular.js

Modules found:

找到的模块：

• https://github.com/soldair/node-qrcode
• https://www.npmjs.com/package/qrcode-npm

• https://github.com/soldair/node-qrcode
• https://www.npmjs.com/package/qrcode-npm

回答by Balaji L

Have a look over this code:

看看这段代码：

var qr = require('qr-image');  
var express = require('express');

var app = express();

app.get('/', function(req, res) {  
  var code = qr.image(new Date().toString(), { type: 'svg' });
  res.type('svg');
  code.pipe(res);
});

app.listen(3000);

visit npm-qr-image

访问 npm-qr-image

回答by Luscus

You could use qr-imageit is a full JavaScript solution using Buffers that generates QR codes in following formats: png, svg, eps and pdf formats

您可以使用qr-image它是一个完整的 JavaScript 解决方案，它使用 Buffers 生成以下格式的二维码：png、svg、eps 和 pdf 格式

回答by Renish Gotecha

In my case i did following please refer qrcodefor more information.

就我而言，我做了以下操作，请参阅qrcode以获取更多信息。

const qrcode = require('qrcode');
const qrOption = { 
  margin : 7,
  width : 175
};
const qrString = 'QR_STRING';
const bufferImage = await qrcode.toDataURL(qrString,qrOption);
console.log(bufferImage);

回答by hamedkke

try it

试试看

1)npm i qrcode
2)var QRCode = require('qrcode')
3)QRCode.toString('I am a pony!',{type:'terminal'}, function (err, 
base64image) {
 console.log(base64image)
  })