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vue导出当前页面为pdf格式

作者:互联网

1、安装html2canvas和jspdf依赖

	npm install html2canvas --save
	npm install jspdf --save  
(如果jspdf 报错,则在index.js中引入
<scriptsrc="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.3.2/jspdf.debug.js"></script>)

2、在utils中创建htmlToPdf.js文件,并复制以下代码

// 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 = "测评报告"; //pdf名称
      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
        //在画布中呈现大小,可调
        let imgWidth = 595.28    //575.28
        let imgHeight = 592.28 / contentWidth * contentHeight //582.28
        let pageData = canvas.toDataURL('image/jpeg', 1.0)
        let PDF = new jsPDF('', 'pt', 'a4')   //jsPDF要小写,因为是cdn引入,可以打开链接看源码
        if (leftHeight < pageHeight) {
         //(pageData, 'JPEG', 左边距 ,上边距,宽,高)
          PDF.addImage(pageData, 'JPEG', 0, 0, imgWidth, imgHeight) //10 20
        } else {
          while (leftHeight > 0) {
            PDF.addImage(pageData, 'JPEG', 0, position, imgWidth, imgHeight) //10
            leftHeight -= pageHeight
            position -= 841.89
            if (leftHeight > 0) {
              PDF.addPage()
            }
          }
        }
        PDF.save(title + '.pdf')
      }
      )
    }
  }
}

3.main.js中引入上面那个htmlToPdf文件

import htmlToPdf from '@/components/Utils/htmlToPdf'
Vue.use(htmlToPdf)

在vue页面中调用

 <div id="pdfDom">
 	//这里是要导出的html内容
    <el-button @click="getPdf()">保存为PDF</el-button>
 </div>

标签:jspdf,vue,pageData,PDF,let,htmlToPdf,leftHeight,pdf,页面
来源: https://blog.csdn.net/weixin_41760500/article/details/115394662