微信小程序本身不支持屏蔽下载按钮加载在线pdf。因此，需要通过其它方式进行加载。
在这里，使用当前最新版的pdf.js 3.0+，点击跳转至下载地址
1、修改View.html
下载后，可以屏蔽下载按钮，修改view.html如下：
<!DOCTYPE html>
<!--
Copyright 2012 Mozilla Foundation
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
Adobe CMap resources are covered by their own copyright but the same license:
Copyright 1990-2015 Adobe Systems Incorporated.
See https://github.com/adobe-type-tools/cmap-resources
-->
<html dir="ltr" mozdisallowselectionprint>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<meta name="google" content="notranslate">
<title>浏览</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 src="../build/pdf.js"></script>
<script src="viewer.js"></script>
</head>
<body tabindex="1">
<div id="outerContainer">
<div id="sidebarContainer">
<div id="toolbarSidebar">
<div id="toolbarSidebarLeft">
<div id="sidebarViewButtons" class="splitToolbarButton toggled" role="radiogroup">
<button id="viewThumbnail" class="toolbarButton toggled" title="Show Thumbnails" tabindex="2" data-l10n-id="thumbs" role="radio" aria-checked="true" aria-controls="thumbnailView">
<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" role="radio" aria-checked="false" aria-controls="outlineView">
<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" role="radio" aria-checked="false" aria-controls="attachmentsView">
<span data-l10n-id="attachments_label">Attachments</span>
</button>
<button id="viewLayers" class="toolbarButton" title="Show Layers (double-click to reset all layers to the default state)" tabindex="5" data-l10n-id="layers" role="radio" aria-checked="false" aria-controls="layersView">
<span data-l10n-id="layers_label">Layers</span>
</button>
</div>
</div>
<div id="toolbarSidebarRight">
<div id="outlineOptionsContainer" class="hidden">
<div class="verticalToolbarSeparator"></div>
<button id="currentOutlineItem" class="toolbarButton" disabled="disabled" title="Find Current Outline Item" tabindex="6" data-l10n-id="current_outline_item">
<span data-l10n-id="current_outline_item_label">Current Outline Item</span>
</button>
</div>
</div>
</div>
<div id="sidebarContent">
<div id="thumbnailView">
</div>
<div id="outlineView" class="hidden">
</div>
<div id="attachmentsView" class="hidden">
</div>
<div id="layersView" class="hidden">
</div>
</div>
<div id="sidebarResizer"></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" aria-invalid="false">
<div class="splitToolbarButton">
<button id="findPrevious" class="toolbarButton" 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" 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="findbarOptionsOneContainer">
<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>
</div>
<div id="findbarOptionsTwoContainer">
<input type="checkbox" id="findMatchDiacritics" class="toolbarField" tabindex="96">
<label for="findMatchDiacritics" class="toolbarLabel" data-l10n-id="find_match_diacritics_label">Match Diacritics</label>
<input type="checkbox" id="findEntireWord" class="toolbarField" tabindex="97">
<label for="findEntireWord" class="toolbarLabel" data-l10n-id="find_entire_word_label">Whole Words</label>
</div>
<div id="findbarMessageContainer" aria-live="polite">
<span id="findResultsCount" class="toolbarLabel"></span>
<span id="findMsg" class="toolbarLabel"></span>
</div>
</div> <!-- findbar -->
<div class="editorParamsToolbar hidden doorHangerRight" id="editorFreeTextParamsToolbar">
<div class="editorParamsToolbarContainer">
<div class="editorParamsSetter">
<label for="editorFreeTextColor" class="editorParamsLabel" data-l10n-id="editor_free_text_color">Color</label>
<input type="color" id="editorFreeTextColor" class="editorParamsColor" tabindex="100">
</div>
<div class="editorParamsSetter">
<label for="editorFreeTextFontSize" class="editorParamsLabel" data-l10n-id="editor_free_text_size">Size</label>
<input type="range" id="editorFreeTextFontSize" class="editorParamsSlider" value="10" min="5" max="100" step="1" tabindex="101">
</div>
</div>
</div>
<div class="editorParamsToolbar hidden doorHangerRight" id="editorInkParamsToolbar">
<div class="editorParamsToolbarContainer">
<div class="editorParamsSetter">
<label for="editorInkColor" class="editorParamsLabel" data-l10n-id="editor_ink_color">Color</label>
<input type="color" id="editorInkColor" class="editorParamsColor" tabindex="102">
</div>
<div class="editorParamsSetter">
<label for="editorInkThickness" class="editorParamsLabel" data-l10n-id="editor_ink_thickness">Thickness</label>
<input type="range" id="editorInkThickness" class="editorParamsSlider" value="1" min="1" max="20" step="1" tabindex="103">
</div>
<div class="editorParamsSetter">
<label for="editorInkOpacity" class="editorParamsLabel" data-l10n-id="editor_ink_opacity">Opacity</label>
<input type="range" id="editorInkOpacity" class="editorParamsSlider" value="100" min="1" max="100" step="1" tabindex="104">
</div>
</div>
</div>
<div style="display: none;" id="secondaryToolbar" class="secondaryToolbar hidden doorHangerRight">
<div id="secondaryToolbarButtonContainer">
<button id="secondaryOpenFile" class="secondaryToolbarButton visibleLargeView" title="Open File" tabindex="51" data-l10n-id="open_file">
<span data-l10n-id="open_file_label">Open</span>
</button>
<button id="secondaryPrint" class="secondaryToolbarButton visibleMediumView" title="Print" tabindex="52" data-l10n-id="print">
<span data-l10n-id="print_label">Print</span>
</button>
<button id="secondaryDownload" class="secondaryToolbarButton visibleMediumView" title="Save" tabindex="53" data-l10n-id="save">
<span data-l10n-id="save_label">Save</span>
</button>
<div class="horizontalToolbarSeparator visibleLargeView"></div>
<button id="presentationMode" class="secondaryToolbarButton" title="Switch to Presentation Mode" tabindex="54" data-l10n-id="presentation_mode">
<span data-l10n-id="presentation_mode_label">Presentation Mode</span>
</button>
<a href="#" id="viewBookmark" class="secondaryToolbarButton" 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"></div>
<button id="firstPage" class="secondaryToolbarButton" 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" 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" 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" 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>
<div id="cursorToolButtons" role="radiogroup">
<button id="cursorSelectTool" class="secondaryToolbarButton toggled" title="Enable Text Selection Tool" tabindex="60" data-l10n-id="cursor_text_select_tool" role="radio" aria-checked="true">
<span data-l10n-id="cursor_text_select_tool_label">Text Selection Tool</span>
</button>
<button id="cursorHandTool" class="secondaryToolbarButton" title="Enable Hand Tool" tabindex="61" data-l10n-id="cursor_hand_tool" role="radio" aria-checked="false">
<span data-l10n-id="cursor_hand_tool_label">Hand Tool</span>
</button>
</div>
<div class="horizontalToolbarSeparator"></div>
<div id="scrollModeButtons" role="radiogroup">
<button id="scrollPage" class="secondaryToolbarButton" title="Use Page Scrolling" tabindex="62" data-l10n-id="scroll_page" role="radio" aria-checked="false">
<span data-l10n-id="scroll_page_label">Page Scrolling</span>
</button>
<button id="scrollVertical" class="secondaryToolbarButton toggled" title="Use Vertical Scrolling" tabindex="63" data-l10n-id="scroll_vertical" role="radio" aria-checked="true">
<span data-l10n-id="scroll_vertical_label" >Vertical Scrolling</span>
</button>
<button id="scrollHorizontal" class="secondaryToolbarButton" title="Use Horizontal Scrolling" tabindex="64" data-l10n-id="scroll_horizontal" role="radio" aria-checked="false">
<span data-l10n-id="scroll_horizontal_label">Horizontal Scrolling</span>
</button>
<button id="scrollWrapped" class="secondaryToolbarButton" title="Use Wrapped Scrolling" tabindex="65" data-l10n-id="scroll_wrapped" role="radio" aria-checked="false">
<span data-l10n-id="scroll_wrapped_label">Wrapped Scrolling</span>
</button>
</div>
<div class="horizontalToolbarSeparator"></div>
<div id="spreadModeButtons" role="radiogroup">
<button id="spreadNone" class="secondaryToolbarButton toggled" title="Do not join page spreads" tabindex="66" data-l10n-id="spread_none" role="radio" aria-checked="true">
<span data-l10n-id="spread_none_label">No Spreads</span>
</button>
<button id="spreadOdd" class="secondaryToolbarButton" title="Join page spreads starting with odd-numbered pages" tabindex="67" data-l10n-id="spread_odd" role="radio" aria-checked="false">
<span data-l10n-id="spread_odd_label">Odd Spreads</span>
</button>
<button id="spreadEven" class="secondaryToolbarButton" title="Join page spreads starting with even-numbered pages" tabindex="68" data-l10n-id="spread_even" role="radio" aria-checked="false">
<span data-l10n-id="spread_even_label">Even Spreads</span>
</button>
</div>
<div class="horizontalToolbarSeparator"></div>
<button id="documentProperties" class="secondaryToolbarButton" title="Document Properties…" tabindex="69" data-l10n-id="document_properties" aria-controls="documentPropertiesDialog">
<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" aria-expanded="false" aria-controls="sidebarContainer">
<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" aria-expanded="false" aria-controls="findbar">
<span data-l10n-id="findbar_label">Find</span>
</button>
<div class="splitToolbarButton hiddenSmallView">
<button class="toolbarButton" 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" 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" title="Page" value="1" min="1" tabindex="15" data-l10n-id="page" autocomplete="off">
<span id="numPages" class="toolbarLabel"></span>
</div>
<div id="toolbarViewerRight">
<button id="openFile" class="toolbarButton hiddenLargeView" title="Open File" tabindex="31" data-l10n-id="open_file">
<span data-l10n-id="open_file_label">Open</span>
</button>
<button id="print" class="toolbarButton hiddenMediumView" title="Print" tabindex="32" data-l10n-id="print">
<span data-l10n-id="print_label">Print</span>
</button>
<button id="download" class="toolbarButton hiddenMediumView" title="Save" tabindex="33" data-l10n-id="save">
<span data-l10n-id="save_label">Save</span>
</button>
<div class="verticalToolbarSeparator hiddenMediumView"></div>
<div style="display: none;" id="editorModeButtons" class="splitToolbarButton toggled" role="radiogroup">
<button style="display: none;" id="editorFreeText" class="toolbarButton" disabled="disabled" title="Text" role="radio" aria-checked="false" tabindex="34" data-l10n-id="editor_free_text2">
<span data-l10n-id="editor_free_text2_label">Text</span>
</button>
<button style="display: none;" id="editorInk" class="toolbarButton" disabled="disabled" title="Draw" role="radio" aria-checked="false" tabindex="35" data-l10n-id="editor_ink2">
<span data-l10n-id="editor_ink2_label">Draw</span>
</button>
</div>
<div id="editorModeSeparator" class="verticalToolbarSeparator"></div>
<button style="display: none;" id="secondaryToolbarToggle" class="toolbarButton" title="Tools" tabindex="48" data-l10n-id="tools" aria-expanded="false" aria-controls="secondaryToolbar">
<span data-l10n-id="tools_label">Tools</span>
</button>
</div>
<div id="toolbarViewerMiddle">
<div class="splitToolbarButton">
<button id="zoomOut" class="toolbarButton" 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" 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>
<div id="viewerContainer" tabindex="0">
<div id="viewer" class="pdfViewer"></div>
</div>
</div> <!-- mainContainer -->
<div id="dialogContainer">
<dialog id="passwordDialog">
<div class="row">
<label for="password" id="passwordText" data-l10n-id="password_label">Enter the password to open this PDF file:</label>
</div>
<div class="row">
<input type="password" id="password" class="toolbarField">
</div>
<div class="buttonRow">
<button id="passwordCancel" class="dialogButton"><span data-l10n-id="password_cancel">Cancel</span></button>
<button id="passwordSubmit" class="dialogButton"><span data-l10n-id="password_ok">OK</span></button>
</div>
</dialog>
<dialog id="documentPropertiesDialog">
<div class="row">
<span id="fileNameLabel" data-l10n-id="document_properties_file_name">File name:</span>
<p id="fileNameField" aria-labelledby="fileNameLabel">-</p>
</div>
<div class="row">
<span id="fileSizeLabel" data-l10n-id="document_properties_file_size">File size:</span>
<p id="fileSizeField" aria-labelledby="fileSizeLabel">-</p>
</div>
<div class="separator"></div>
<div class="row">
<span id="titleLabel" data-l10n-id="document_properties_title">Title:</span>
<p id="titleField" aria-labelledby="titleLabel">-</p>
</div>
<div class="row">
<span id="authorLabel" data-l10n-id="document_properties_author">Author:</span>
<p id="authorField" aria-labelledby="authorLabel">-</p>
</div>
<div class="row">
<span id="subjectLabel" data-l10n-id="document_properties_subject">Subject:</span>
<p id="subjectField" aria-labelledby="subjectLabel">-</p>
</div>
<div class="row">
<span id="keywordsLabel" data-l10n-id="document_properties_keywords">Keywords:</span>
<p id="keywordsField" aria-labelledby="keywordsLabel">-</p>
</div>
<div class="row">
<span id="creationDateLabel" data-l10n-id="document_properties_creation_date">Creation Date:</span>
<p id="creationDateField" aria-labelledby="creationDateLabel">-</p>
</div>
<div class="row">
<span id="modificationDateLabel" data-l10n-id="document_properties_modification_date">Modification Date:</span>
<p id="modificationDateField" aria-labelledby="modificationDateLabel">-</p>
</div>
<div class="row">
<span id="creatorLabel" data-l10n-id="document_properties_creator">Creator:</span>
<p id="creatorField" aria-labelledby="creatorLabel">-</p>
</div>
<div class="separator"></div>
<div class="row">
<span id="producerLabel" data-l10n-id="document_properties_producer">PDF Producer:</span>
<p id="producerField" aria-labelledby="producerLabel">-</p>
</div>
<div class="row">
<span id="versionLabel" data-l10n-id="document_properties_version">PDF Version:</span>
<p id="versionField" aria-labelledby="versionLabel">-</p>
</div>
<div class="row">
<span id="pageCountLabel" data-l10n-id="document_properties_page_count">Page Count:</span>
<p id="pageCountField" aria-labelledby="pageCountLabel">-</p>
</div>
<div class="row">
<span id="pageSizeLabel" data-l10n-id="document_properties_page_size">Page Size:</span>
<p id="pageSizeField" aria-labelledby="pageSizeLabel">-</p>
</div>
<div class="separator"></div>
<div class="row">
<span id="linearizedLabel" data-l10n-id="document_properties_linearized">Fast Web View:</span>
<p id="linearizedField" aria-labelledby="linearizedLabel">-</p>
</div>
<div class="buttonRow">
<button id="documentPropertiesClose" class="dialogButton"><span data-l10n-id="document_properties_close">Close</span></button>
</div>
</dialog>
<dialog id="printServiceDialog" style="min-width: 200px;">
<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="dialogButton"><span data-l10n-id="print_progress_close">Cancel</span></button>
</div>
</dialog>
</div> <!-- dialogContainer -->
</div> <!-- outerContainer -->
<div id="printContainer"></div>
<input type="file" id="fileInput" class="hidden">
</body>
</html>
2、修改view.js
如果需要修改以文件名做为页面的Title，需要修改view.js，屏蔽掉设置document.title的代码
3、在Nginx中发布该程序以及相应的pdf文件
设置nginx.conf：
server {
listen 2000;
listen [::]:2000;
server_name _;
root /home/data/file-db;
index /html/web/viewer.html;
location / {
autoindex off;
autoindex_exact_size off;
autoindex_localtime off;
}
}把pdf文件放置在 /home/data/file-db中（含子目录）
把pdf.js相关的web和build文件夹放在/home/data/file-db/html中。
使用地址：http://<<your-ip>>:2000/html/web/viewer.html?file=http%3A%2F%2F171.84.0.40%3A2000%2Fstandard%2Fpolicy%2F10267ad6-2c0a-4056-b97a-6b158cf55698.pdf文章来源：https://www.toymoban.com/news/detail-485172.html
“?”后的部分为encodeURIcomponent()后的url，端口号需要与本服务url相同文章来源地址https://www.toymoban.com/news/detail-485172.html
4、小程序中使用该服务
<template>
<view>
<web-view :src="src"></web-view>
</view>
</template>
<script>
export default {
data: function (){
return {
src: null
};
},
onLoad(options) {
this.src = 'http://171.84.0.40:20000/html/web/viewer.html?file=' + encodeURIComponent(options.url);
}
}
</script>
到了这里，关于微信小程序加载在线PDF，并禁用下载的文章就介绍完了。如果您还想了解更多内容，请在右上角搜索TOY模板网以前的文章或继续浏览下面的相关文章，希望大家以后多多支持TOY模板网！
