1、第一步:我们要添加两个模块
//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
2、第二步:
定义全局函数…创建一个htmlToPdf.js文件在指定位置.我个人习惯放在('src/components/utils/htmlToPdf’)中,网上有挂载到Vue实例上的
htmlToPdf.js文件内容:
// 导出页面为PDF格式
import html2Canvas from 'html2canvas'
import JsPDF from 'jspdf'
export function getPdf(title, id) {
let share = document.querySelector(`#${id}`)
let width = share.clientWidth
let height = share.clientHeight
window.pageYOffset = 0;
document.documentElement.scrollTop = 0
document.body.scrollTop = 0;
let canvas = document.createElement
html2Canvas(share, {
allowTaint: true
}).then(function (canvas) {
let contentWidth = canvas.width
let contentHeight = canvas.height
let pageHeight = contentWidth / 680 * 841.89
let leftHeight = contentHeight
let position = 0
let imgWidth = 579
let imgHeight = 680 / contentWidth * contentHeight
console.log(imgWidth);
console.log(imgHeight);
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')
}
)
}
3、 在需要的导出的页面,调用我们在htmlToPdf.js定义的getPdf方法即可
import { getPdf } from "@/utils/htmlToPdf";
4、然后在.
<el-button @click="exportPDF()">导出PDF
exportPDF() {
getPdf("页面导出PDF文件名", "pdfDom");
// pdfDom 是标签的id名
},