vue导出pdf

前言

• 参考1
• 参考2

案例一

• vue-cli + vue2导出pdf
• 案例地址
• 安装依赖

# 将页面html转换成图片
npm install --save html2canvas 
# 将图片生成pdf
npm install jspdf --save

• 新建htmlToPdf.js

import html2Canvas from 'html2canvas'
import JsPDF from 'jspdf'
export default{
  install (Vue) {
    Vue.prototype.getPdf = function () {
      var title = this.htmlTitle
      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
        let imgWidth = 595.28
        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', 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')
      }
      )
    }
  }
}

• 项目入口main.js中导入并挂载

import Vue from 'vue'
import App from './App.vue'
import htmlToPdf from '@/components/utils/htmlToPdf'
Vue.use(htmlToPdf)

Vue.config.productionTip = false

new Vue({
  render: h => h(App)
}).$mount('#app')

• 在根组件App.vue中测试使用

案例二

• vue-cli + vue3导出pdf
• 案例地址
• 安装依赖

# 将页面html转换成图片
npm install --save html2canvas 
# 将图片生成pdf
npm install jspdf --save

• 新建htmlToPdf.js

import html2Canvas from 'html2canvas'
import JsPDF from 'jspdf'
export default {
  install(Vue, options) {
    Vue.config.globalProperties.getPdf = function () {
      var title = this.htmlTitle
      console.log(options)
      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
        let imgWidth = 595.28
        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', 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')
      })
    }
  },
}

• 项目入口main.js中导入并挂载

import { createApp } from 'vue'
import App from './App.vue'
import htmlToPdf from '@/components/utils/htmlToPdf'

const app = createApp(App)
app.use(htmlToPdf)
app.mount("#app")

• 在根组件App.vue中测试使用

补充

• vue2和vue3在项目入口main.js中挂载的方式不同