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npm install html2canvas;
npm install jspdf --save
// htmlToPdf.js
// 导出页面为PDF格式
import html2Canvas from 'html2canvas'
import JsPDF from 'jspdf'
export default {
install(Vue, options) {
Vue.prototype.getPdf = function () {
var title = this.htmlTitle //DPF标题
html2Canvas(document.querySelector('#pdfDom'), {
allowTaint: true,
taintTest: false,
useCORS: true,
y:72, // 对Y轴进行裁切
// width:1200,
// height:5000,
dpi: window.devicePixelRatio * 4, //将分辨率提高到特定的DPI 提高四倍
scale: 4 //按比例增加分辨率
}).then(function (canvas) {
let contentWidth = canvas.width
let contentHeight = canvas.height
let pageHeight = contentWidth / 592.28 * 841.89
let leftHeight = contentHeight
let position = 0
let imgWidth = 595.28
let imgHeight = 592.28 / contentWidth * contentHeight
let pageData = canvas.toDataURL('image/jpeg', 1.0)
let PDF = new JsPDF('', 'pt', 'a4')
if (leftHeight < pageHeight) {
PDF.addImage(pageData, 'JPEG', 0, 0, imgWidth, imgHeight)
} else {
while (leftHeight > 0) {
PDF.addImage(pageData, 'JPEG', 0, position, imgWidth, imgHeight)
leftHeight -= pageHeight
position -= 841.89
if (leftHeight > 0) {
PDF.addPage()
}
}
}
PDF.save(title + '.pdf')
})
}
}
}
// main.js
import htmlToPdf from '@/util/htmlToPdf'
Vue.use(htmlToPdf)
<div id="pdfDom">
... 打印的内容
</div>
data() {
return {
htmlTitle: 'pdf'
}
}
<el-button @click="getPdf()">PDF</el-button>
npm i print-js
npm i html2Canvas
import printJS from 'print-js'
import html2Canvas from 'html2Canvas'
<el-button @click="goPrint">打印</el-button>
methods: {
goPrint() {
this.isPrint = true
html2Canvas(this.$refs.print, {
allowTaint: true,
taintTest: false,
useCORS: true,
dpi: window.devicePixelRatio * 4,
scale: 4
}).then((canvas) => {
const url = canvas.toDataURL()
printJS({
printable: url, // 要打印的id
type: 'image',
style: '@page{size:auto;margin: 0cm 1cm 0cm 1cm;}' //去除页眉页脚
})
this.isPrint = false
})
}
}
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