vue html转PDF并导出

No.1

install

npm install html2canvas jspdf --save

No.2

create a new file htmlToPdf.js

import html2Canvas from 'html2canvas'
import JsPDF from 'jspdf'

export default{
  install (Vue, options) {
    Vue.prototype.getPdf = function () {
      var title = this.htmlTitle
      html2Canvas(document.querySelector('#pdfDom'), {
        allowTaint: true
      }).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')
      }
      )
    }
  }
}

No3

在main.js中按路径引入并注册

import htmlToPdf from '@/mixin/htmlToPdf.js'

Vue.use(htmlToPdf)

No.4

页面直接使用

<div id="pdfDom">
    <div v-html="pageData"></div>
</div>
<el-button  @click="getPdf('#pdfDom')" size="mini" class="margin-3 width-80" plain>导出</el-button>

export default {
    data() {
        return {
            pageData:null,  //接收html格式代码
            htmlTitle: '导出PDF的标题',
        }
    }
}