H5页面导出成pdf文件

效果图

H5页面导出成pdf文件

代码

<script>

import html2Canvas from 'html2canvas'   //下载依赖 npm install  html2Canvas
import JsPDF from 'jspdf'   //下载依赖 npm install  JsPDF

export default {

  data(){

     htmlTitle: '合同模板', //PDF文件命

  }, 

  created() {

     this.getPdf(this.htmlTitle)

  },

  methods: {

    //页面压缩pdf文件
    getPdf() {
      let this_ = this
      var title = this.htmlTitle
      html2Canvas(document.querySelector('#pdfDom'), {
        useCORS: 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)  //压缩的base64,PDF文件
        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()
            }
          }
        }
        // console.log(pageData)  //(获取压缩的PDF文件图片数据)
        PDF.save(title + '.pdf') //导出PDF文件(导出PDF需要用这个)
      })
    },

 },

}

</script>