vue导出pdf

准备工作

//第一个：将页面html转换成图片
npm install --save html2canvas
//第二个:将图片生成pdf
npm install jspdf --save
1
2
3
4

相关代码

//html里面
<template>
//在要导出为PDF的页面中添加ref
  <div class="app-container" ref="report">
    <h1>{{ prize.actName }}</h1>
    <div style="position: absolute;top: 30px;right:25px;line-height:70px;display: flex;justify-content: right;width: 90%;">
      <el-button type="text" @click="exportPDF">导出为pdf</el-button>
      </div>
      //页面相关内容
    </div>
 <template>
 //页面中引入相关模块
import html2Canvas from 'html2canvas';
import JsPDF from 'jspdf';

//methods中的方法
    // 导出为pdf
    exportPDF(){
      // report ref
      let PDFView = this.$refs.report
      html2Canvas(PDFView,{
        useCORS: true, //是否尝试使用CORS从服务器加载图像
        allowTaint: true,
        dpi: 300, //解决生产图片模糊
        scale: 3, //清晰度--放大倍数
      }).then((canvas)=>{
        let contentWidth = canvas.width
        let contentHeight = canvas.height
        let pageHeight = contentWidth / 592.28 * 841.89 // 一页pdf显示html页面生成的canvas高度;
        let leftHeight = contentHeight //未生成pdf的html页面高度
        let position = 0 //pdf页面偏移
        //a4纸的尺寸[595.28,841.89]，html页面生成的canvas在pdf中图片的宽高
        // let imgWidth = 595.28
        let imgWidth = 560.28  //宽度
        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', 20, 20, imgWidth, imgHeight)
        } else {
          while (leftHeight > 0) {
            PDF.addImage(pageData, 'JPEG', 20, position, imgWidth, imgHeight)
            leftHeight -= pageHeight
            position -= 841.89
            if (leftHeight > 0) {
              PDF.addPage()
            }
          }
        }
        PDF.save(this.prize.actName+'报告'+ '.pdf')//下载标题
      })
    }
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52