vue pdf下载
主要技术栈是Vue,两个库:
html2canvas npm地址
jspdf
具体实现代码如下:
<template><div class="priview_resume_container">
<div style="font-size: 16px" @click="getResume">点这里下载 </div>
</div>
</template>
<script>export default {
name: 'priviewResume',
methods: {
getResume() {
this.commonUtils.generateResume(
$('.priview_resume_container')[0],
'测试'
)
}
},
components: {}
}
</script>
import html2canvas from 'html2canvas'import JsPDF from 'jspdf'
export const generateResume = (el, name) => {
html2canvas(el).then(canvas => {
let contentWidth = canvas.width
let contentHeight = canvas.height
//一页pdf显示html页面生成的canvas高度;
let pageHeight = (contentWidth / 592.28) * 841.89
//未生成pdf的html页面高度
let leftHeight = contentHeight
//页面偏移
let position = 0
//a4纸的尺寸[595.28,841.89],html页面生成的canvas在pdf中图片的宽高
let imgWidth = 595.28
let imgHeight = (592.28 / contentWidth) * contentHeight
let pageData = canvas.toDataURL('image/jpeg', 1.0)
let pdf = new JsPDF('', 'pt', 'a4')
//有两个高度需要区分,一个是html页面的实际高度,和生成pdf的页面高度(841.89)
//当内容未超过pdf一页显示的范围,无需分页
if (leftHeight < pageHeight) {
pdf.addImage(pageData, 'JPEG', 0, 0, imgWidth, imgHeight)
} else {
while (leftHeight > 0) {
//arg3-->距离左边距;arg4-->距离上边距;arg5-->宽度;arg6-->高度
pdf.addImage(pageData, 'JPEG', 0, position, imgWidth, imgHeight)
leftHeight -= pageHeight
position -= 841.89
//避免添加空白页
if (leftHeight > 0) {
//添加新页
pdf.addPage()
}
}
}
pdf.save(`${name}.pdf`)
})
}
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