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Vue3實(shí)現(xiàn)pdf在線預(yù)覽的三種方式

更新時(shí)間：2025年02月14日 10:20:33 作者：Li_Ning21

這篇文章主要為大家詳細(xì)介紹了使用Vue3實(shí)現(xiàn)pdf在線預(yù)覽的三種常用方式,文中的示例代碼講解詳細(xì),感興趣的小伙伴可以跟隨小編一起學(xué)習(xí)一下

iframe

先說(shuō)最簡(jiǎn)單的，iframe可以直接展示pdf文件，所以如果不作禁止預(yù)覽等操作，iframe是最合適的。

    <el-dialog
      v-model="previewOtherUpload"
      reset-drag-position
      draggable
      sticky
      :title="_options.imgName || '詳情'"
      footer-hide
      class-name="vertical-center-modal"
    >
        <div
          @contextmenu.prevent
          style="user-select: none;"
        >
          <iframe
            ref="iframe"
            :src="`${modelValue}#toolbar=0`"
            width="100%"
            height="600px"
            @load="onIframeLoad"
          >
          </iframe>
        </div>
    </el-dialog>

<script setup>
const modelValue = ref('https://501351981.github.io/vue-office/examples/dist/static/test-files/test.pdf')
let previewOtherUpload = ref(false);
const iframe = ref(null)

const clickShow = () => {
	previewOtherUpload.value = true;
}

// 嘗試在iframe加載完畢后，進(jìn)行右鍵禁用，但實(shí)際需要通過(guò)postmessage來(lái)處理，所以這里無(wú)實(shí)際用處
const onIframeLoad = () => {
  try {
    console.log('iframe 已加載', iframe.value.contentWindow.window);
    if (iframe.value.contentWindow.document) {
      iframe.value.contentWindow.document.addEventListener('contextmenu', (e) => e.preventDefault());
    }
  } catch (error) {
    console.error('無(wú)法訪問(wèn) iframe 內(nèi)容:', error);
  }
}
</script>

vue-office

vue-office-gitcode地址

安裝

#docx文檔預(yù)覽組件
npm install @vue-office/docx vue-demi@0.14.6

#excel文檔預(yù)覽組件
npm install @vue-office/excel vue-demi@0.14.6

#pdf文檔預(yù)覽組件
npm install @vue-office/pdf vue-demi@0.14.6

#pptx文檔預(yù)覽組件
npm install @vue-office/pptx vue-demi@0.14.6

如果是vue2.6版本或以下還需要額外安裝 @vue/composition-api

npm install @vue/composition-api

我們?nèi)绻活A(yù)覽pdf，則安裝 npm install @vue-office/pdf vue-demi@0.14.6

    <el-dialog
      v-model="previewOtherUpload"
      reset-drag-position
      draggable
      sticky
      :title="_options.imgName || '詳情'"
      footer-hide
      class-name="vertical-center-modal"
    >
        <div
          @contextmenu.prevent
          style="user-select: none;"
        >
          <VueOfficePdf
            :src="modelValue"
          />
        </div>
    </el-dialog>

<script setup>
import VueOfficePdf from '@vue-office/pdf'
const modelValue = ref('https://501351981.github.io/vue-office/examples/dist/static/test-files/test.pdf')
let previewOtherUpload = ref(false);

const clickShow = () => {
	previewOtherUpload.value = true;
}
</script>

pdfjs-dist

這是目前最麻煩的一個(gè)插件，一定先確定下載的版本"pdfjs-dist": “2.16.105”，我用的是這個(gè)，否則下面的workerSrc設(shè)置會(huì)有問(wèn)題。

  <el-dialog
      v-model="previewOtherUpload"
      reset-drag-position
      draggable
      sticky
      :title="_options.imgName || '詳情'"
      footer-hide
      class-name="vertical-center-modal"
    >
		<div 
          id="pdf-view"
          @contextmenu.prevent
          style="user-select: none;"
        >
            <canvas v-for="page in state.pdfPages" :key="page" id="pdfCanvas" />
            <div id="text-view"></div>
        </div>
    </el-dialog>

<script setup>
import { computed, reactive, ref, watch, nextTick } from "vue";
import * as pdfjsViewer from 'pdfjs-dist/web/pdf_viewer.js'
import 'pdfjs-dist/web/pdf_viewer.css'
import * as PDF from 'pdfjs-dist'
// 設(shè)置 pdf.worker.js 路徑
PDF.GlobalWorkerOptions.workerSrc = '../../../node_modules/pdfjs-dist/build/pdf.worker.js';
let pdfDoc = null;

const modelValue = ref('https://501351981.github.io/vue-office/examples/dist/static/test-files/test.pdf')
let previewOtherUpload = ref(false);

const clickShow = () => {
	loadFile(modelValue)
	previewOtherUpload.value = true;
}

const loadFile = (url) => {
    PDF.getDocument({
        url,
        cMapUrl: 'https://cdn.jsdelivr.net/npm/pdfjs-dist@2.16.105/cmaps/',
        cMapPacked: true,
    }).promise.then((pdf) => {
        pdfDoc = pdf
        // 獲取pdf文件總頁(yè)數(shù)
        state.pdfPages = pdf.numPages
        nextTick(() => {
            renderPage(1) // 從第一頁(yè)開始渲染
        })
    })
}
const renderPage = (num) => {
    pdfDoc.getPage(num).then((page) => {
        const canvas = document.getElementById('pdfCanvas')
        const ctx = canvas.getContext('2d')
        const viewport = page.getViewport({ scale: state.pdfScale })
        canvas.width = viewport.width
        canvas.height = viewport.height
        const renderContext = {
            canvasContext: ctx,
            viewport
        }
        page.render(renderContext)
    })
}
</script>

插件樣式也不好調(diào)整，不推薦。