在工作中遇到一个通过网页的形式浏览pdf文件以及图片的需求，图片简单，直接通过网页的形式打开这个图片的URL即可。而pdf这边，通过查询发现有一个名为pdf.js的神器。
简单介绍下，它可以在html中直接浏览pdf文件，pdf的每一页数据，通过H5的canvas进行解析，以及显示。其中还可以操作页数、滚动、打印、下载等功能。git上的地址为：http://mozilla.github.io/pdf.js/
网上的文档资料很多，就不记录了，直接留存通用代码。
<!DOCTYPE html>
<html dir="ltr" mozdisallowselectionprint moznomarginboxes>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<meta name="google" content="notranslate">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>PDF.js viewer</title> <link rel="stylesheet" href="viewer.css"> <!-- This snippet is used in production (included from viewer.html) -->
<link rel="resource" type="application/l10n" href="locale/locale.properties">
<script>
var afterUrl = window.location.search.substring(1);
var DEFAULT_URL = afterUrl;
</script>
<script src="../build/pdf.js"></script> <script src="viewer.js"></script> </head> <body tabindex="1" class="loadingInProgress">
<div id="outerContainer"> <div id="sidebarContainer">
<div id="toolbarSidebar">
<div class="splitToolbarButton toggled">
<button id="viewThumbnail" class="toolbarButton toggled" title="Show Thumbnails" tabindex="2" data-l10n-id="thumbs">
<span data-l10n-id="thumbs_label">Thumbnails</span>
</button>
<button id="viewOutline" class="toolbarButton" 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" 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" id="findbar">
<div id="findbarInputContainer">
<input id="findInput" class="toolbarField" title="Find" placeholder="Find in document…" tabindex="91" data-l10n-id="find_input">
<div class="splitToolbarButton">
<button id="findPrevious" class="toolbarButton findPrevious" title="Find the previous occurrence of the phrase" tabindex="92" data-l10n-id="find_previous">
<span data-l10n-id="find_previous_label">Previous</span>
</button>
<div class="splitToolbarButtonSeparator"></div>
<button id="findNext" class="toolbarButton findNext" title="Find the next occurrence of the phrase" tabindex="93" data-l10n-id="find_next">
<span data-l10n-id="find_next_label">Next</span>
</button>
</div>
</div> <div id="findbarOptionsContainer">
<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>
</div> <div id="findbarMessageContainer">
<span id="findMsg" class="toolbarLabel"></span>
</div>
</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="cursorSelectTool" class="secondaryToolbarButton selectTool toggled" title="Enable Text Selection Tool" tabindex="60" data-l10n-id="cursor_text_select_tool">
<span data-l10n-id="cursor_text_select_tool_label">Text Selection Tool</span>
</button>
<button id="cursorHandTool" class="secondaryToolbarButton handTool" title="Enable Hand Tool" tabindex="61" data-l10n-id="cursor_hand_tool">
<span data-l10n-id="cursor_hand_tool_label">Hand Tool</span>
</button> <div class="horizontalToolbarSeparator"></div> <button id="documentProperties" class="secondaryToolbarButton documentProperties" title="Document Properties…" tabindex="62" 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" title="Find in Document" tabindex="12" data-l10n-id="findbar">
<span data-l10n-id="findbar_label">Find</span>
</button>
<div class="splitToolbarButton hiddenSmallView">
<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">Page Fit</option>
<option id="pageWidthOption" title="" value="page-width" data-l10n-id="page_scale_width">Page 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> <menu type="context" id="viewerContextMenu">
<menuitem id="contextFirstPage" label="First Page"
data-l10n-id="first_page"></menuitem>
<menuitem id="contextLastPage" label="Last Page"
data-l10n-id="last_page"></menuitem>
<menuitem id="contextPageRotateCw" label="Rotate Clockwise"
data-l10n-id="page_rotate_cw"></menuitem>
<menuitem id="contextPageRotateCcw" label="Rotate Counter-Clockwise"
data-l10n-id="page_rotate_ccw"></menuitem>
</menu> <div id="viewerContainer" tabindex="0">
<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">
<input type="password" 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>
</body>
</html>
改文件名为viewer 使用时可以xxxxxxxxx/viewer.html?xxxxxxxx/xx.pdf，直接把pdf的URL作为?后的参数放置在URL中，即可用系统默认的功能和样式进行访问pdf文件，在非互联网系统，个人认为这样的处理方式比较实用
实用git上最新的版本的只用在viewer的html代码中加入
var afterUrl = window.location.search.substring(1);
var DEFAULT_URL = afterUrl;
给全局的下的默认文件URL DEFAULT_URL 赋值即可