nodeJs生成条形码图片

代码如下：

var { DOMImplementation, XMLSerializer } = require('xmldom');
var xmlSerializer = new XMLSerializer();
//http://www.w3.org/1999/xhtml
var document = new DOMImplementation().createDocument('html', 'html', null);
//http://www.w3.org/2000/svg
var svgNode = document.createElementNS('svg', 'svg');
var JsBarcode = require('jsbarcode');
var svg2png = require('svg2png');
var fs = require('fs')

JsBarcode(svgNode, 'test', {
    xmlDocument: document,
});

var svgText = xmlSerializer.serializeToString(svgNode);
var png = svg2png.sync(svgText);
fs.writeFileSync('条形码.png', png);
console.log('条形码生成完毕');