如何在Webpack和Vuejs中将完整的PDF.js查看器与工具栏一起使用？

Question

我正在使用vue.js spa和webpack尝试使用mozilla的PDF.js显示PDF。我使examples的工作非常容易，但是我很难使工具栏的完整查看器正常工作。我要求使用带有require('pdfjs-dist/webpack')的PDFjs，因此它不会发送“已设置假工人”警告。我真的找不到一个SO问题/指南或视频来解释如何在Webpack中使用完整的查看器。这个项目的文档也几乎不存在，我想我也尽我所能地找到了。

对不起，如果这看起来像是一个愚蠢的问题，但我为此付出了很多努力，并单击了我在Google搜索中可以找到的所有链接。

先谢谢大家

我已经从示例中获得了代码：

var PDFJS = require('pdfjs-dist/webpack');

  const url = 'the-url-to-my-pdf';
  const canvasContainer = document.getElementById('preview');

  function renderPage(page) {
    const viewport = page.getViewport(2);
    let canvas = document.createElement('canvas');
    let canvasWrapper = document.createElement('div');
    canvasWrapper.classList.add('page');
    const ctx = canvas.getContext('2d');
    const renderContext = {
      canvasContext: ctx,
      viewport: viewport
    };
    canvas.height = viewport.height;
    canvas.width = viewport.width;
    canvasWrapper.appendChild(canvas);
    canvasContainer.appendChild(canvasWrapper);

    page.render(renderContext);
  }

  function renderPages(pdfDoc) {
    for(var num = 1; num <= pdfDoc.numPages; num++) {
      pdfDoc.getPage(num).then(renderPage);
    }
  }

  PDFJS.getDocument(url).then(renderPages);

元素“预览”只是多个pdf页面的包装div

Answer 1

这是一个完整的示例-完整的单文件Vue组件：

<template>
  <div class="pdfjs">
    <div id="outerContainer">

      <div id="sidebarContainer">
        <div id="toolbarSidebar">
          <div class="splitToolbarButton toggled">
            <button id="viewThumbnail" class="toolbarButton group toggled" title="Show Thumbnails" tabindex="2" data-l10n-id="thumbs">
              <span data-l10n-id="thumbs_label">Thumbnails</span>
            </button>
            <button id="viewOutline" class="toolbarButton group" title="Show Document Outline (double-click to expand/collapse all items)" tabindex="3" data-l10n-id="document_outline">
              <span data-l10n-id="document_outline_label">Document Outline</span>
            </button>
            <button id="viewAttachments" class="toolbarButton group" title="Show Attachments" tabindex="4" data-l10n-id="attachments">
              <span data-l10n-id="attachments_label">Attachments</span>
            </button>
          </div>
        </div>
        <div id="sidebarContent">
          <div id="thumbnailView">
          </div>
          <div id="outlineView" class="hidden">
          </div>
          <div id="attachmentsView" class="hidden">
          </div>
        </div>
      </div>  <!-- sidebarContainer -->

      <div id="mainContainer">
        <div class="findbar hidden doorHanger hiddenSmallView" id="findbar">
          <label for="findInput" class="toolbarLabel" data-l10n-id="find_label">Find:</label>
          <input id="findInput" class="toolbarField" tabindex="91">
          <div class="splitToolbarButton">
            <button class="toolbarButton findPrevious" title="" id="findPrevious" tabindex="92" data-l10n-id="find_previous">
              <span data-l10n-id="find_previous_label">Previous</span>
            </button>
            <div class="splitToolbarButtonSeparator"></div>
            <button class="toolbarButton findNext" title="" id="findNext" tabindex="93" data-l10n-id="find_next">
              <span data-l10n-id="find_next_label">Next</span>
            </button>
          </div>
          <input type="checkbox" id="findHighlightAll" class="toolbarField" tabindex="94">
          <label for="findHighlightAll" class="toolbarLabel" data-l10n-id="find_highlight">Highlight all</label>
          <input type="checkbox" id="findMatchCase" class="toolbarField" tabindex="95">
          <label for="findMatchCase" class="toolbarLabel" data-l10n-id="find_match_case_label">Match case</label>
          <span id="findResultsCount" class="toolbarLabel hidden"></span>
          <span id="findMsg" class="toolbarLabel"></span>
        </div>  <!-- findbar -->

        <div id="secondaryToolbar" class="secondaryToolbar hidden doorHangerRight">
          <div id="secondaryToolbarButtonContainer">
            <button id="secondaryPresentationMode" class="secondaryToolbarButton presentationMode visibleLargeView" title="Switch to Presentation Mode" tabindex="51" data-l10n-id="presentation_mode">
              <span data-l10n-id="presentation_mode_label">Presentation Mode</span>
            </button>

            <button id="secondaryOpenFile" class="secondaryToolbarButton openFile visibleLargeView" title="Open File" tabindex="52" data-l10n-id="open_file">
              <span data-l10n-id="open_file_label">Open</span>
            </button>

            <button id="secondaryPrint" class="secondaryToolbarButton print visibleMediumView" title="Print" tabindex="53" data-l10n-id="print">
              <span data-l10n-id="print_label">Print</span>
            </button>

            <button id="secondaryDownload" class="secondaryToolbarButton download visibleMediumView" title="Download" tabindex="54" data-l10n-id="download">
              <span data-l10n-id="download_label">Download</span>
            </button>

            <a href="#" id="secondaryViewBookmark" class="secondaryToolbarButton bookmark visibleSmallView" title="Current view (copy or open in new window)" tabindex="55" data-l10n-id="bookmark">
              <span data-l10n-id="bookmark_label">Current View</span>
            </a>

            <div class="horizontalToolbarSeparator visibleLargeView"></div>

            <button id="firstPage" class="secondaryToolbarButton firstPage" title="Go to First Page" tabindex="56" data-l10n-id="first_page">
              <span data-l10n-id="first_page_label">Go to First Page</span>
            </button>
            <button id="lastPage" class="secondaryToolbarButton lastPage" title="Go to Last Page" tabindex="57" data-l10n-id="last_page">
              <span data-l10n-id="last_page_label">Go to Last Page</span>
            </button>

            <div class="horizontalToolbarSeparator"></div>

            <button id="pageRotateCw" class="secondaryToolbarButton rotateCw" title="Rotate Clockwise" tabindex="58" data-l10n-id="page_rotate_cw">
              <span data-l10n-id="page_rotate_cw_label">Rotate Clockwise</span>
            </button>
            <button id="pageRotateCcw" class="secondaryToolbarButton rotateCcw" title="Rotate Counterclockwise" tabindex="59" data-l10n-id="page_rotate_ccw">
              <span data-l10n-id="page_rotate_ccw_label">Rotate Counterclockwise</span>
            </button>

            <div class="horizontalToolbarSeparator"></div>

            <button id="toggleHandTool" class="secondaryToolbarButton handTool" title="Enable hand tool" tabindex="60" data-l10n-id="hand_tool_enable">
              <span data-l10n-id="hand_tool_enable_label">Enable hand tool</span>
            </button>

            <div class="horizontalToolbarSeparator"></div>

            <button id="documentProperties" class="secondaryToolbarButton documentProperties" title="Document Properties…" tabindex="61" data-l10n-id="document_properties">
              <span data-l10n-id="document_properties_label">Document Properties…</span>
            </button>
          </div>
        </div>  <!-- secondaryToolbar -->

        <div class="toolbar">
          <div id="toolbarContainer">
            <div id="toolbarViewer">
              <div id="toolbarViewerLeft">
                <button id="sidebarToggle" class="toolbarButton" title="Toggle Sidebar" tabindex="11" data-l10n-id="toggle_sidebar">
                  <span data-l10n-id="toggle_sidebar_label">Toggle Sidebar</span>
                </button>
                <div class="toolbarButtonSpacer"></div>
                <button id="viewFind" class="toolbarButton group hiddenSmallView" title="Find in Document" tabindex="12" data-l10n-id="findbar">
                  <span data-l10n-id="findbar_label">Find</span>
                </button>
                <div class="splitToolbarButton">
                  <button class="toolbarButton pageUp" title="Previous Page" id="previous" tabindex="13" data-l10n-id="previous">
                    <span data-l10n-id="previous_label">Previous</span>
                  </button>
                  <div class="splitToolbarButtonSeparator"></div>
                  <button class="toolbarButton pageDown" title="Next Page" id="next" tabindex="14" data-l10n-id="next">
                    <span data-l10n-id="next_label">Next</span>
                  </button>
                </div>
                <input type="number" id="pageNumber" class="toolbarField pageNumber" title="Page" value="1" size="4" min="1" tabindex="15" data-l10n-id="page">
                <span id="numPages" class="toolbarLabel"></span>
              </div>
              <div id="toolbarViewerRight">
                <button id="presentationMode" class="toolbarButton presentationMode hiddenLargeView" title="Switch to Presentation Mode" tabindex="31" data-l10n-id="presentation_mode">
                  <span data-l10n-id="presentation_mode_label">Presentation Mode</span>
                </button>

                <button id="openFile" class="toolbarButton openFile hiddenLargeView" title="Open File" tabindex="32" data-l10n-id="open_file">
                  <span data-l10n-id="open_file_label">Open</span>
                </button>

                <button id="print" class="toolbarButton print hiddenMediumView" title="Print" tabindex="33" data-l10n-id="print">
                  <span data-l10n-id="print_label">Print</span>
                </button>

                <button id="download" class="toolbarButton download hiddenMediumView" title="Download" tabindex="34" data-l10n-id="download">
                  <span data-l10n-id="download_label">Download</span>
                </button>
                <a href="#" id="viewBookmark" class="toolbarButton bookmark hiddenSmallView" title="Current view (copy or open in new window)" tabindex="35" data-l10n-id="bookmark">
                  <span data-l10n-id="bookmark_label">Current View</span>
                </a>

                <div class="verticalToolbarSeparator hiddenSmallView"></div>

                <button id="secondaryToolbarToggle" class="toolbarButton" title="Tools" tabindex="36" data-l10n-id="tools">
                  <span data-l10n-id="tools_label">Tools</span>
                </button>
              </div>
              <div id="toolbarViewerMiddle">
                <div class="splitToolbarButton">
                  <button id="zoomOut" class="toolbarButton zoomOut" title="Zoom Out" tabindex="21" data-l10n-id="zoom_out">
                    <span data-l10n-id="zoom_out_label">Zoom Out</span>
                  </button>
                  <div class="splitToolbarButtonSeparator"></div>
                  <button id="zoomIn" class="toolbarButton zoomIn" title="Zoom In" tabindex="22" data-l10n-id="zoom_in">
                    <span data-l10n-id="zoom_in_label">Zoom In</span>
                  </button>
                </div>
                <span id="scaleSelectContainer" class="dropdownToolbarButton">
                  <select id="scaleSelect" title="Zoom" tabindex="23" data-l10n-id="zoom">
                    <option id="pageAutoOption" title="" value="auto" selected="selected" data-l10n-id="page_scale_auto">Automatic Zoom</option>
                    <option id="pageActualOption" title="" value="page-actual" data-l10n-id="page_scale_actual">Actual Size</option>
                    <option id="pageFitOption" title="" value="page-fit" data-l10n-id="page_scale_fit">Fit Page</option>
                    <option id="pageWidthOption" title="" value="page-width" data-l10n-id="page_scale_width">Full Width</option>
                    <option id="customScaleOption" title="" value="custom" disabled="disabled" hidden="true"></option>
                    <option title="" value="0.5" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 50 }'>50%</option>
                    <option title="" value="0.75" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 75 }'>75%</option>
                    <option title="" value="1" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 100 }'>100%</option>
                    <option title="" value="1.25" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 125 }'>125%</option>
                    <option title="" value="1.5" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 150 }'>150%</option>
                    <option title="" value="2" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 200 }'>200%</option>
                    <option title="" value="3" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 300 }'>300%</option>
                    <option title="" value="4" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 400 }'>400%</option>
                  </select>
                </span>
              </div>
            </div>
            <div id="loadingBar">
              <div class="progress">
                <div class="glimmer">
                </div>
              </div>
            </div>
          </div>
        </div>

        <div type="context" id="viewerContextMenu">
          <div id="contextFirstPage" label="First Page"
                    data-l10n-id="first_page"></div>
          <div id="contextLastPage" label="Last Page"
                    data-l10n-id="last_page"></div>
          <div id="contextPageRotateCw" label="Rotate Clockwise"
                    data-l10n-id="page_rotate_cw"></div>
          <div id="contextPageRotateCcw" label="Rotate Counter-Clockwise"
                    data-l10n-id="page_rotate_ccw"></div>
        </div>

        <div id="viewerContainer" tabindex="0" v-loading="loading">
          <div id="viewer" class="pdfViewer"></div>
        </div>

        <div id="errorWrapper" hidden='true'>
          <div id="errorMessageLeft">
            <span id="errorMessage"></span>
            <button id="errorShowMore" data-l10n-id="error_more_info">
              More Information
            </button>
            <button id="errorShowLess" data-l10n-id="error_less_info" hidden='true'>
              Less Information
            </button>
          </div>
          <div id="errorMessageRight">
            <button id="errorClose" data-l10n-id="error_close">
              Close
            </button>
          </div>
          <div class="clearBoth"></div>
          <textarea id="errorMoreInfo" hidden='true' readonly="readonly"></textarea>
        </div>
      </div> <!-- mainContainer -->

      <div id="overlayContainer" class="hidden">
        <div id="passwordOverlay" class="container hidden">
          <div class="dialog">
            <div class="row">
              <p id="passwordText" data-l10n-id="password_label">Enter the password to open this PDF file:</p>
            </div>
            <div class="row">
              <!-- The type="password" attribute is set via script, to prevent warnings in Firefox for all http:// documents. -->
              <input id="password" class="toolbarField">
            </div>
            <div class="buttonRow">
              <button id="passwordCancel" class="overlayButton"><span data-l10n-id="password_cancel">Cancel</span></button>
              <button id="passwordSubmit" class="overlayButton"><span data-l10n-id="password_ok">OK</span></button>
            </div>
          </div>
        </div>
        <div id="documentPropertiesOverlay" class="container hidden">
          <div class="dialog">
            <div class="row">
              <span data-l10n-id="document_properties_file_name">File name:</span> <p id="fileNameField">-</p>
            </div>
            <div class="row">
              <span data-l10n-id="document_properties_file_size">File size:</span> <p id="fileSizeField">-</p>
            </div>
            <div class="separator"></div>
            <div class="row">
              <span data-l10n-id="document_properties_title">Title:</span> <p id="titleField">-</p>
            </div>
            <div class="row">
              <span data-l10n-id="document_properties_author">Author:</span> <p id="authorField">-</p>
            </div>
            <div class="row">
              <span data-l10n-id="document_properties_subject">Subject:</span> <p id="subjectField">-</p>
            </div>
            <div class="row">
              <span data-l10n-id="document_properties_keywords">Keywords:</span> <p id="keywordsField">-</p>
            </div>
            <div class="row">
              <span data-l10n-id="document_properties_creation_date">Creation Date:</span> <p id="creationDateField">-</p>
            </div>
            <div class="row">
              <span data-l10n-id="document_properties_modification_date">Modification Date:</span> <p id="modificationDateField">-</p>
            </div>
            <div class="row">
              <span data-l10n-id="document_properties_creator">Creator:</span> <p id="creatorField">-</p>
            </div>
            <div class="separator"></div>
            <div class="row">
              <span data-l10n-id="document_properties_producer">PDF Producer:</span> <p id="producerField">-</p>
            </div>
            <div class="row">
              <span data-l10n-id="document_properties_version">PDF Version:</span> <p id="versionField">-</p>
            </div>
            <div class="row">
              <span data-l10n-id="document_properties_page_count">Page Count:</span> <p id="pageCountField">-</p>
            </div>
            <div class="buttonRow">
              <button id="documentPropertiesClose" class="overlayButton"><span data-l10n-id="document_properties_close">Close</span></button>
            </div>
          </div>
        </div>
        <div id="printServiceOverlay" class="container hidden">
          <div class="dialog">
            <div class="row">
              <span data-l10n-id="print_progress_message">Preparing document for printing…</span>
            </div>
            <div class="row">
              <progress value="0" max="100"></progress>
              <span data-l10n-id="print_progress_percent" data-l10n-args='{ "progress": 0 }' class="relative-progress">0%</span>
            </div>
            <div class="buttonRow">
              <button id="printCancel" class="overlayButton"><span data-l10n-id="print_progress_close">Cancel</span></button>
            </div>
          </div>
        </div>
      </div>  <!-- overlayContainer -->

    </div> <!-- outerContainer -->
    <div id="printContainer"></div>
  </div>
</template>

<script>
require('pdf.js-viewer/pdf');
require('pdf.js-viewer/viewer.css');

export default
{
  props:
    {
      src:
        {
          type: String,
          required: true
        },
      filename:
        {
          type: String,
          required: true
        }
    },
  data ()
  {
    let a =
      {
        loading: false,
        timer: null
      };
    return a;
  },
  created ()
  {
    document.addEventListener('pagerendered', this.pageRendered);
  },
  beforeDestroy ()
  {
    document.removeEventListener('pagerendered', this.pageRendered);
    if (this.timer) clearInterval(this.timer);
  },
  mounted ()
  {
    this.loadFile();
  },
  watch:
    {
      src: 'loadFile'
    },
  methods:
    {
      loadFile ()
      {
        this.loading = true;
        this.timer = setInterval(this.pollPDF, 100);
        window.PDFJS.workerSrc = '/pdf.worker.js';
        if (window.PDFView.pdfDocument) window.PDFView.pdfDocument.destroy();
        window.PDFJS.webViewerLoad(this.src);
        window.PDFView.setScale('page-width', true);
      },
      pageRendered (evt)
      {
        this.loading = false;
        clearInterval(this.timer);
        this.timer = null;
      },
      pollPDF ()
      {
        if (!window.PDFView.loading) this.pageRendered();
      }
    }
}
</script>

<style>
  .pdfjs
  {
    width: 100%;
    height: 100%;
  }

  .pdfjs #scaleSelectContainer
  {
    min-width: auto !important;
    max-width: none !important;
  }

  #scaleSelect
  {
    min-width: initial !important;
  }

  .pdfjs .dropdownToolbarButton
  {
    background-image: none !important;
  }

  #toolbarViewerLeft
  {
    position: static !important;
  }

  #toolbarViewerRight
  {
    display: none !important;
  }

  #sidebarToggle
  {
    display: none;
  }

  .pdfjs #thumbnailView
  {
    width: 100% !important;
  }

  .pdfjs #errorWrapper
  {
    margin-top: 3px;
  }

  .pdfjs #errorWrapper button
  {
    color: #000;
    padding-left: 6px;
    padding-right: 6px;
  }
</style>