soarli

PDF.JS配置记录
前言前段时间在“soarli实验室”搭建了“AI书架”,涉及到大量pdf文件的问题,目标如下:点击即可在浏览器里面...
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20
2020/06

PDF.JS配置记录

前言

前段时间在“soarli实验室”搭建了“AI书架”,涉及到大量pdf文件的问题,目标如下:

  1. 点击即可在浏览器里面预览,不必下载
  2. 尽量隐藏真实文件地址,最大化程度上尊重版权
  3. 不明确提供下载/打印功能
  4. 多设备、多浏览器均可用
  5. 要能够确保打开、实际渲染的速度不能太慢
  6. 考虑经济效益,尽最大可能减少恶意请求带来的影响

如果直接跨域引用CDN上的资源,严格意义上讲,以上几点都不能满足。

一次尝试

源码打包

<!DOCTYPE html>  
<html>  
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>  
<title>soarli - pdf</title>  

<script type="text/javascript" src="js/jquery.min.js"></script>  
<script type="text/javascript" src="js/jquery.media.js"></script>  
<script type="text/javascript">  
    $(function() {  
        $('a.media').media();  
        $('a.mediase').media();  
    });  
</script> 

</head>
<body>
<center>
 <div class="panel panel-primary">
   <div class="panel-heading" align="center">
   </div>
   <div class="panel-body">
      <a class="media" href="pdf1.pdf"></a>  
   </div>
</center>
</body>
</html>

jquery.media.js

/*
 * jQuery Media Plugin for converting elements into rich media content.
 *
 * Examples and documentation at: http://malsup.com/jquery/media/
 * Copyright (c) 2007-2010 M. Alsup
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 * @author: M. Alsup
 * @version: 0.99 (05-JUN-2013)
 * @requires jQuery v1.1.2 or later
 * $Id: jquery.media.js 2460 2007-07-23 02:53:15Z malsup $
 *
 * Supported Media Players:
 *    - Flash
 *    - Quicktime
 *    - Real Player
 *    - Silverlight
 *    - Windows Media Player
 *    - iframe
 *
 * Supported Media Formats:
 *     Any types supported by the above players, such as:
 *     Video: asf, avi, flv, mov, mpg, mpeg, mp4, qt, smil, swf, wmv, 3g2, 3gp
 *     Audio: aif, aac, au, gsm, mid, midi, mov, mp3, m4a, snd, rm, wav, wma
 *     Other: bmp, html, pdf, psd, qif, qtif, qti, tif, tiff, xaml
 *
 * Thanks to Mark Hicken and Brent Pedersen for helping me debug this on the Mac!
 * Thanks to Dan Rossi for numerous bug reports and code bits!
 * Thanks to Skye Giordano for several great suggestions!
 * Thanks to Richard Connamacher for excellent improvements to the non-IE behavior!
 */
/*global SWFObject alert Sys */
/*jshint forin:false */
;(function($) {
"use strict";    

var mode = document.documentMode || 0;
var msie = /MSIE/.test(navigator.userAgent);
var lameIE = msie && (/MSIE (6|7|8)\.0/.test(navigator.userAgent) || mode < 9);

/**
 * Chainable method for converting elements into rich media.
 *
 * @param options
 * @param callback fn invoked for each matched element before conversion
 * @param callback fn invoked for each matched element after conversion
 */
$.fn.media = function(options, f1, f2) {
    if (options == 'undo') {
        return this.each(function() {
            var $this = $(this);
            var html = $this.data('media.origHTML');
            if (html)
                $this.replaceWith(html);
        });
    }
    
    return this.each(function() {
        if (typeof options == 'function') {
            f2 = f1;
            f1 = options;
            options = {};
        }
        var o = getSettings(this, options);
        // pre-conversion callback, passes original element and fully populated options
        if (typeof f1 == 'function') f1(this, o);

        var r = getTypesRegExp();
        var m = r.exec(o.src.toLowerCase()) || [''];
        var fn;

        if (o.type)
            m[0] = o.type;
        else
            m.shift();

        for (var i=0; i < m.length; i++) {
            fn = m[i].toLowerCase();
            if (isDigit(fn[0])) fn = 'fn' + fn; // fns can't begin with numbers
            if (!$.fn.media[fn])
                continue;  // unrecognized media type
            // normalize autoplay settings
            var player = $.fn.media[fn+'_player'];
            if (!o.params) o.params = {};
            if (player) {
                var num = player.autoplayAttr == 'autostart';
                o.params[player.autoplayAttr || 'autoplay'] = num ? (o.autoplay ? 1 : 0) : o.autoplay ? true : false;
            }
            var $div = $.fn.media[fn](this, o);

            $div.css('backgroundColor', o.bgColor).width(o.width);
            
            if (o.canUndo) {
                var $temp = $('<div></div>').append(this);
                $div.data('media.origHTML', $temp.html()); // store original markup
            }
            
            // post-conversion callback, passes original element, new div element and fully populated options
            if (typeof f2 == 'function') f2(this, $div[0], o, player.name);
            break;
        }
    });
};

/**
 * Non-chainable method for adding or changing file format / player mapping
 * @name mapFormat
 * @param String format File format extension (ie: mov, wav, mp3)
 * @param String player Player name to use for the format (one of: flash, quicktime, realplayer, winmedia, silverlight or iframe
 */
$.fn.media.mapFormat = function(format, player) {
    if (!format || !player || !$.fn.media.defaults.players[player]) return; // invalid
    format = format.toLowerCase();
    if (isDigit(format[0])) format = 'fn' + format;
    $.fn.media[format] = $.fn.media[player];
    $.fn.media[format+'_player'] = $.fn.media.defaults.players[player];
};

// global defautls; override as needed
$.fn.media.defaults = {
    standards:  true,       // use object tags only (no embeds for non-IE browsers)
    canUndo:    true,       // tells plugin to store the original markup so it can be reverted via: $(sel).mediaUndo()
    width:        $(window).width(),
    height:        $(window).height(),
    autoplay:    0,            // normalized cross-player setting
    bgColor:    '#ffffff',    // background color
    params:        { wmode: 'transparent'},    // added to object element as param elements; added to embed element as attrs
    attrs:        {},            // added to object and embed elements as attrs
    flvKeyName: 'file',        // key used for object src param (thanks to Andrea Ercolino)
    flashvars:    {},            // added to flash content as flashvars param/attr
    flashVersion:    '7',    // required flash version
    expressInstaller: null,    // src for express installer

    // default flash video and mp3 player (@see: http://jeroenwijering.com/?item=Flash_Media_Player)
    flvPlayer:     'mediaplayer.swf',
    mp3Player:     'mediaplayer.swf',

    // @see http://msdn2.microsoft.com/en-us/library/bb412401.aspx
    silverlight: {
        inplaceInstallPrompt: 'true', // display in-place install prompt?
        isWindowless:          'true', // windowless mode (false for wrapping markup)
        framerate:              '24',      // maximum framerate
        version:              '0.9',  // Silverlight version
        onError:              null,      // onError callback
        onLoad:                  null,   // onLoad callback
        initParams:              null,      // object init params
        userContext:          null      // callback arg passed to the load callback
    }
};

// Media Players; think twice before overriding
$.fn.media.defaults.players = {
    flash: {
        name:         'flash',
        title:         'Flash',
        types:         'flv,mp3,swf',
        mimetype:     'application/x-shockwave-flash',
        pluginspage: 'http://www.adobe.com/go/getflashplayer',
        ieAttrs: {
            classid:  'clsid:d27cdb6e-ae6d-11cf-96b8-444553540000',
            type:      'application/x-oleobject',
            codebase: 'http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=' + $.fn.media.defaults.flashVersion
        }
    },
    quicktime: {
        name:         'quicktime',
        title:         'QuickTime',
        mimetype:     'video/quicktime',
        pluginspage: 'http://www.apple.com/quicktime/download/',
        types:         'aif,aiff,aac,au,bmp,gsm,mov,mid,midi,mpg,mpeg,mp4,m4a,psd,qt,qtif,qif,qti,snd,tif,tiff,wav,3g2,3gp',
        ieAttrs: {
            classid:  'clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B',
            codebase: 'http://www.apple.com/qtactivex/qtplugin.cab'
        }
    },
    realplayer: {
        name:          'real',
        title:          'RealPlayer',
        types:          'ra,ram,rm,rpm,rv,smi,smil',
        mimetype:      'audio/x-pn-realaudio-plugin',
        pluginspage:  'http://www.real.com/player/',
        autoplayAttr: 'autostart',
        ieAttrs: {
            classid: 'clsid:CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA'
        }
    },
    winmedia: {
        name:          'winmedia',
        title:          'Windows Media',
        types:          'asx,asf,avi,wma,wmv',
        mimetype:      isFirefoxWMPPluginInstalled() ? 'application/x-ms-wmp' : 'application/x-mplayer2',
        pluginspage:  'http://www.microsoft.com/Windows/MediaPlayer/',
        autoplayAttr: 'autostart',
        oUrl:          'url',
        ieAttrs: {
            classid:  'clsid:6BF52A52-394A-11d3-B153-00C04F79FAA6',
            type:      'application/x-oleobject'
        }
    },
    // special cases
    img: {
        name:  'img',
        title: 'Image',
        types: 'gif,png,jpg'
    },
    iframe: {
        name:  'iframe',
        types: 'html,pdf'
    },
    silverlight: {
        name:  'silverlight',
        types: 'xaml'
    }
};

//
//    everything below here is private
//


// detection script for FF WMP plugin (http://www.therossman.org/experiments/wmp_play.html)
// (hat tip to Mark Ross for this script)
function isFirefoxWMPPluginInstalled() {
    var plugs = navigator.plugins || [];
    for (var i = 0; i < plugs.length; i++) {
        var plugin = plugs[i];
        if (plugin['filename'] == 'np-mswmp.dll')
            return true;
    }
    return false;
}

var counter = 1;

for (var player in $.fn.media.defaults.players) {
    var types = $.fn.media.defaults.players[player].types;
    $.each(types.split(','), function(i,o) {
        if (isDigit(o[0])) o = 'fn' + o;
        $.fn.media[o] = $.fn.media[player] = getGenerator(player);
        $.fn.media[o+'_player'] = $.fn.media.defaults.players[player];
    });
}

function getTypesRegExp() {
    var types = '';
    for (var player in $.fn.media.defaults.players) {
        if (types.length) types += ',';
        types += $.fn.media.defaults.players[player].types;
    }
    return new RegExp('\\.(' + types.replace(/,/ig,'|') + ')\\b');
}

function getGenerator(player) {
    return function(el, options) {
        return generate(el, options, player);
    };
}

function isDigit(c) {
    return '0123456789'.indexOf(c) > -1;
}

// flatten all possible options: global defaults, meta, option obj
function getSettings(el, options) {
    options = options || {};
    var a, n;
    var $el = $(el);
    var cls = el.className || '';
    // support metadata plugin (v1.0 and v2.0)
    var meta = $.metadata ? $el.metadata() : $.meta ? $el.data() : {};
    meta = meta || {};
    var w = meta.width  || parseInt(((cls.match(/\bw:(\d+)/)||[])[1]||0),10) || parseInt(((cls.match(/\bwidth:(\d+)/)||[])[1]||0),10);
    var h = meta.height || parseInt(((cls.match(/\bh:(\d+)/)||[])[1]||0),10) || parseInt(((cls.match(/\bheight:(\d+)/)||[])[1]||0),10);

    if (w) meta.width = w;
    if (h) meta.height = h;
    if (cls) meta.cls = cls;
    
    // crank html5 style data attributes
    var dataName = 'data-';
    for (var i=0; i < el.attributes.length; i++) {
        a = el.attributes[i], n = $.trim(a.name);
        var index = n.indexOf(dataName);
        if (index === 0) {
            n = n.substring(dataName.length);
            meta[n] = a.value;
        }
    }

    a = $.fn.media.defaults;
    var b = options;
    var c = meta;

    var p = { params: { bgColor: options.bgColor || $.fn.media.defaults.bgColor } };
    var opts = $.extend({}, a, b, c);
    $.each(['attrs','params','flashvars','silverlight'], function(i,o) {
        opts[o] = $.extend({}, p[o] || {}, a[o] || {}, b[o] || {}, c[o] || {});
    });

    if (typeof opts.caption == 'undefined') opts.caption = $el.text();

    // make sure we have a source!
    opts.src = opts.src || $el.attr('href') || $el.attr('src') || 'unknown';
    return opts;
}

//
//    Flash Player
//

// generate flash using SWFObject library if possible
$.fn.media.swf = function(el, opts) {
    var f, p;
    if (!window.SWFObject && !window.swfobject) {
        // roll our own
        if (opts.flashvars) {
            var a = [];
            for (f in opts.flashvars)
                a.push(f + '=' + opts.flashvars[f]);
            if (!opts.params) opts.params = {};
            opts.params.flashvars = a.join('&');
        }
        return generate(el, opts, 'flash');
    }

    var id = el.id ? (' id="'+el.id+'"') : '';
    var cls = opts.cls ? (' class="' + opts.cls + '"') : '';
    var $div = $('<div' + id + cls + '>');

    // swfobject v2+
    if (window.swfobject) {
        $(el).after($div).appendTo($div);
        if (!el.id) el.id = 'movie_player_' + counter++;

        // replace el with swfobject content
        window.swfobject.embedSWF(opts.src, el.id, opts.width, opts.height, opts.flashVersion,
            opts.expressInstaller, opts.flashvars, opts.params, opts.attrs);
    }
    // swfobject < v2
    else {
        $(el).after($div).remove();
        var so = new SWFObject(opts.src, 'movie_player_' + counter++, opts.width, opts.height, opts.flashVersion, opts.bgColor);
        if (opts.expressInstaller) so.useExpressInstall(opts.expressInstaller);

        for (p in opts.params)
            if (p != 'bgColor') so.addParam(p, opts.params[p]);
        for (f in opts.flashvars)
            so.addVariable(f, opts.flashvars[f]);
        so.write($div[0]);
    }

    if (opts.caption) $('<div>').appendTo($div).html(opts.caption);
    return $div;
};

// map flv and mp3 files to the swf player by default
$.fn.media.flv = $.fn.media.mp3 = function(el, opts) {
    var src = opts.src;
    var player = /\.mp3\b/i.test(src) ? opts.mp3Player : opts.flvPlayer;
    var key = opts.flvKeyName;
    src = encodeURIComponent(src);
    opts.src = player;
    opts.src = opts.src + '?'+key+'=' + (src);
    var srcObj = {};
    srcObj[key] = src;
    opts.flashvars = $.extend({}, srcObj, opts.flashvars );
    return $.fn.media.swf(el, opts);
};

//
//    Silverlight
//
$.fn.media.xaml = function(el, opts) {
    if (!window.Sys || !window.Sys.Silverlight) {
        if ($.fn.media.xaml.warning) return;
        $.fn.media.xaml.warning = 1;
        alert('You must include the Silverlight.js script.');
        return;
    }

    var props = {
        width: opts.width,
        height: opts.height,
        background: opts.bgColor,
        inplaceInstallPrompt: opts.silverlight.inplaceInstallPrompt,
        isWindowless: opts.silverlight.isWindowless,
        framerate: opts.silverlight.framerate,
        version: opts.silverlight.version
    };
    var events = {
        onError: opts.silverlight.onError,
        onLoad: opts.silverlight.onLoad
    };

    var id1 = el.id ? (' id="'+el.id+'"') : '';
    var id2 = opts.id || 'AG' + counter++;
    // convert element to div
    var cls = opts.cls ? (' class="' + opts.cls + '"') : '';
    var $div = $('<div' + id1 + cls + '>');
    $(el).after($div).remove();

    Sys.Silverlight.createObjectEx({
        source: opts.src,
        initParams: opts.silverlight.initParams,
        userContext: opts.silverlight.userContext,
        id: id2,
        parentElement: $div[0],
        properties: props,
        events: events
    });

    if (opts.caption) $('<div>').appendTo($div).html(opts.caption);
    return $div;
};

//
// generate object/embed markup
//
function generate(el, opts, player) {
    var $el = $(el);
    var o = $.fn.media.defaults.players[player];
    var a, key, v;

    if (player == 'iframe') {
        o = $('<iframe' + ' width="' + opts.width + '" height="' + opts.height + '" >');
        o.attr('src', opts.src);
        o.css('backgroundColor', o.bgColor);
    }
    else if (player == 'img') {
        o = $('<img>');
        o.attr('src', opts.src);
        if (opts.width)
            o.attr('width', opts.width);
        if (opts.height)
            o.attr('height', opts.height);
        o.css('backgroundColor', o.bgColor);
    }
    else if (lameIE) {
        a = ['<object width="' + opts.width + '" height="' + opts.height + '" '];
        for (key in opts.attrs)
            a.push(key + '="'+opts.attrs[key]+'" ');
        for (key in o.ieAttrs || {}) {
            v = o.ieAttrs[key];
            if (key == 'codebase' && window.location.protocol == 'https:')
                v = v.replace('http','https');
            a.push(key + '="'+v+'" ');
        }
        a.push('></ob'+'ject'+'>');
        var p = ['<param name="' + (o.oUrl || 'src') +'" value="' + opts.src + '">'];
        for (key in opts.params)
            p.push('<param name="'+ key +'" value="' + opts.params[key] + '">');
        o = document.createElement(a.join(''));
        for (var i=0; i < p.length; i++)
            o.appendChild(document.createElement(p[i]));
    }
    else if (opts.standards) {
        // Rewritten to be standards compliant by Richard Connamacher
        a = ['<object type="' + o.mimetype +'" width="' + opts.width + '" height="' + opts.height +'"'];
        if (opts.src) a.push(' data="' + opts.src + '" ');
        if (msie) {
            for (key in o.ieAttrs || {}) {
                v = o.ieAttrs[key];
                if (key == 'codebase' && window.location.protocol == 'https:')
                    v = v.replace('http','https');
                a.push(key + '="'+v+'" ');
            }
        }
        a.push('>');
        a.push('<param name="' + (o.oUrl || 'src') +'" value="' + opts.src + '">');
        for (key in opts.params) {
            if (key == 'wmode' && player != 'flash') // FF3/Quicktime borks on wmode
                continue;
            a.push('<param name="'+ key +'" value="' + opts.params[key] + '">');
        }
        // Alternate HTML
        a.push('<div><p><strong>'+o.title+' Required</strong></p><p>'+o.title+' is required to view this media. <a href="'+o.pluginspage+'">Download Here</a>.</p></div>');
        a.push('</ob'+'ject'+'>');
    }
     else {
            a = ['<embed width="' + opts.width + '" height="' + opts.height + '" style="display:block"'];
            if (opts.src) a.push(' src="' + opts.src + '" ');
            for (key in opts.attrs)
                a.push(key + '="'+opts.attrs[key]+'" ');
            for (key in o.eAttrs || {})
                a.push(key + '="'+o.eAttrs[key]+'" ');
            for (key in opts.params) {
                if (key == 'wmode' && player != 'flash') // FF3/Quicktime borks on wmode
                    continue;
                a.push(key + '="'+opts.params[key]+'" ');
            }
            a.push('></em'+'bed'+'>');
        }    
    // convert element to div
    var id = el.id ? (' id="'+el.id+'"') : '';
    var cls = opts.cls ? (' class="' + opts.cls + '"') : '';
    var $div = $('<div' + id + cls + '>');
    $el.after($div).remove();
    if (lameIE || player == 'iframe' || player == 'img')
        $div.append(o);
    else
        $div.html(a.join(''));
    
    if (opts.caption) 
        $('<div>').appendTo($div).html(opts.caption);
    return $div;
}


})(jQuery);

jquery.metadata.js

/*
 * Metadata - jQuery plugin for parsing metadata from elements
 *
 * Copyright (c) 2006 John Resig, Yehuda Katz, Jörn Zaefferer
 *
 * Dual licensed under the MIT and GPL licenses:
 *   http://www.opensource.org/licenses/mit-license.php
 *   http://www.gnu.org/licenses/gpl.html
 *
 * Revision: $Id$
 *
 */

/**
 * Sets the type of metadata to use. Metadata is encoded in JSON, and each property
 * in the JSON will become a property of the element itself.
 *
 * There are three supported types of metadata storage:
 *
 *   attr:  Inside an attribute. The name parameter indicates *which* attribute.
 *          
 *   class: Inside the class attribute, wrapped in curly braces: { }
 *   
 *   elem:  Inside a child element (e.g. a script tag). The
 *          name parameter indicates *which* element.
 *          
 * The metadata for an element is loaded the first time the element is accessed via jQuery.
 *
 * As a result, you can define the metadata type, use $(expr) to load the metadata into the elements
 * matched by expr, then redefine the metadata type and run another $(expr) for other elements.
 * 
 * @name $.meta.setType
 *
 * @example <p id="one" class="some_class {item_id: 1, item_label: 'Label'}">This is a p</p>
 * @before $.meta.setType("class")
 * @after $("#one").data().item_id == 1; $("#one")[0].item_label == "Label"
 * @desc Reads metadata from the class attribute
 * 
 * @example <p id="one" class="some_class" data="{item_id: 1, item_label: 'Label'}">This is a p</p>
 * @before $.meta.setType("attr", "data")
 * @after $("#one").data().item_id == 1; $("#one")[0].item_label == "Label"
 * @desc Reads metadata from a "data" attribute
 * 
 * @example <p id="one" class="some_class"><script>{item_id: 1, item_label: 'Label'}</script>This is a p</p>
 * @before $.meta.setType("elem", "script")
 * @after $("#one").data().item_id == 1; $("#one")[0].item_label == "Label"
 * @desc Reads metadata from a nested script element
 * 
 * @param String type The encoding type
 * @param String name The name of the attribute to be used to get metadata (optional)
 * @cat Plugins/Metadata
 * @descr Sets the type of encoding to be used when loading metadata for the first time
 * @type undefined
 * @see data()
 */

(function($) {
    // settings
    $.meta = {
      type: "class",
      name: "data",
      setType: function(type,name){
        this.type = type;
        this.name = name;
      },
      cre: /({.*})/,
      single: 'data'
    };
    
    // reference to original setArray()
    var setArray = $.fn.setArray;
    
    // define new setArray()
    $.fn.setArray = function(arr){
        return setArray.apply( this, arguments ).each(function(){
          if ( this.nodeType == 9 || $.isXMLDoc(this) || this.metaDone ) return;
          
          var data = "{}";
          
          if ( $.meta.type == "class" ) {
            var m = $.meta.cre.exec( this.className );
            if ( m )
              data = m[1];
          } else if ( $.meta.type == "elem" ) {
              if( !this.getElementsByTagName ) return;
            var e = this.getElementsByTagName($.meta.name);
            if ( e.length )
              data = $.trim(e[0].innerHTML);
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e.left+j};"using"in b?b.using.call(a,d):f.css(d)}};c.fn.extend({position:function(){if(!this[0])return null;var a=this[0],b=this.offsetParent(),d=this.offset(),f=/^body|html$/i.test(b[0].nodeName)?{top:0,left:0}:b.offset();d.top-=parseFloat(c.curCSS(a,"marginTop",true))||0;d.left-=parseFloat(c.curCSS(a,"marginLeft",true))||0;f.top+=parseFloat(c.curCSS(b[0],"borderTopWidth",true))||0;f.left+=parseFloat(c.curCSS(b[0],"borderLeftWidth",true))||0;return{top:d.top-f.top,left:d.left-f.left}},offsetParent:function(){return this.map(function(){for(var a=
this.offsetParent||r.body;a&&!/^body|html$/i.test(a.nodeName)&&c.css(a,"position")==="static";)a=a.offsetParent;return a})}});c.each(["Left","Top"],function(a,b){var d="scroll"+b;c.fn[d]=function(f){var e=this[0],i;if(!e)return null;if(f!==v)return this.each(function(){if(i=ua(this))i.scrollTo(!a?f:c(i).scrollLeft(),a?f:c(i).scrollTop());else this[d]=f});else return(i=ua(e))?"pageXOffset"in i?i[a?"pageYOffset":"pageXOffset"]:c.support.boxModel&&i.document.documentElement[d]||i.document.body[d]:e[d]}});
c.each(["Height","Width"],function(a,b){var d=b.toLowerCase();c.fn["inner"+b]=function(){return this[0]?c.css(this[0],d,false,"padding"):null};c.fn["outer"+b]=function(f){return this[0]?c.css(this[0],d,false,f?"margin":"border"):null};c.fn[d]=function(f){var e=this[0];if(!e)return f==null?null:this;if(c.isFunction(f))return this.each(function(i){var j=c(this);j[d](f.call(this,i,j[d]()))});return"scrollTo"in e&&e.document?e.document.compatMode==="CSS1Compat"&&e.document.documentElement["client"+b]||
e.document.body["client"+b]:e.nodeType===9?Math.max(e.documentElement["client"+b],e.body["scroll"+b],e.documentElement["scroll"+b],e.body["offset"+b],e.documentElement["offset"+b]):f===v?c.css(e,d):this.css(d,typeof f==="string"?f:f+"px")}});z.jQuery=z.$=c})(window);

在此基础上确实可以解决跨域下隐藏真实URL时无法正常使用window.open问题(会弹出about:blank),但是在chromefirefox以外不支持PDF预览的浏览器(疯狂暗示Safari等手机浏览器)仍不能正常显示。

PDF.JS闪亮登场

下载地址:https://mozilla.github.io/pdf.js/

viewer.html默认指向compressed.tracemonkey-pldi-09.pdf

屏蔽右键

    <script type="text/javascript">
    /*禁用右键*/
    document.oncontextmenu = () => {
      event.returnValue = false;
      // 兼容ie
      return false;
    };

    </script>

隐藏打印/下载按钮

注意此处display: none若写为visibility:hidden则只会表面隐藏,实际仍占用空间。

隐藏真实链接

      <script src="https://open.soarli.top/jquery/2.1.4/jquery-2.1.4.min.js"></script>
    <script type="text/javascript">
        function re(options) {
            var url = options.attr("val");
            window.open(url,"viewer");
        }
    </script>
<a href="javascript:;" onclick="re($(this))" val="https://xxx.com">《智能革命》</a>

跨域问题(配置CORS

在目标服务器 http://localhost:8081 新增下面头部(响应头)即可。

Access-Control-Allow-Origin: *
Access-Control-Allow-Methods: GET, POST, PUT, OPTIONS
Access-Control-Expose-Headers: Accept-Ranges, Content-Encoding, Content-Length, Content-Range

nginx(其他服务器类似):

location / {
  add_header Access-Control-Allow-Origin '*';
  add_header Access-Control-Allow-Methods 'GET, POST, PUT, OPTIONS';
  add_header Access-Control-Expose-Headers 'Accept-Ranges, Content-Encoding, Content-Length, Content-Range';
}

使用方法:

http://localhost/pdf.js/web/viewer.html?file=http://localhost:8081/demo.pdf

以为这样就大功告成了吗? 很遗憾,还是报了之前的错误

file origin does not match viewer's

viewer.js文件里搜索关键字 (file origin does not match),哈哈真的有 (本来就有的好吗)。

贴下关键代码, 在1863行左右:

{
  var HOSTED_VIEWER_ORIGINS = ['null', 'http://mozilla.github.io', 'https://mozilla.github.io'];
  validateFileURL = function validateFileURL(file) {
    if (file === undefined) {
      return;
    }
    try {
      var viewerOrigin = new URL(window.location.href).origin || 'null';
      if (HOSTED_VIEWER_ORIGINS.indexOf(viewerOrigin) >= 0) {
        return;
      }
      var fileOrigin = new URL(file, window.location.href).origin;
      if (fileOrigin !== viewerOrigin) {
        throw new Error('file origin does not match viewer\'s');
      }
    } catch (ex) {
      var message = ex && ex.message;
      PDFViewerApplication.l10n.get('loading_error', null, 'An error occurred while loading the PDF.').then(function (loadingErrorMessage) {
        PDFViewerApplication.error(loadingErrorMessage, { message: message });
      });
      throw ex;
    }
  };
}

这里使用了try捕捉错误,注意第2个条件语句,因为当前源与目标源不一样,所以抛出了异常。

if (fileOrigin !== viewerOrigin) {
//  throw new Error('file origin does not match viewer\'s');
}

很好解决,只要把throw这行注释即可。 这就到此结束了,完美解决跨域问题。

在又拍云上,添加响应头的方法如下(借助边缘规则):

到这里,问题完美解决~

6.20午更新:禁用Ctrl+S

发现按下Ctrl+SPDF文件会被自动下载,为加强版权保护,进行如下操作:
找到pdf/web/viewer.js,注释掉其中两行。(不同版本所在行数可能不同,根据行数找不到时请根据内容搜索)

问题解决!

进阶

若对源文件保密性有相对更高的要求,可以按照如下方法做进一步的配置:

参考资料:

blog.csdn.net/xuexiaodong009/article/details/13297475

blog.csdn.net/qq_22823581/article/details/53462314

www.geek-share.com/detail/2754397278.html

blog.csdn.net/bianliuzhu/article/details/80622215

www.open-open.com/news/view/1fc3e18

blog.csdn.net/laizhouxiaoboge/article/details/59103951

www.xiejiahe.com/blog/detail/5be97f71df53a14006035e2a

help.upyun.com/knowledge-base/cdn-how-to-use-edgerules/

upyun-assets.b0.upaiyun.com/docs/cdn/edgerules/edgerules_rule_youxianji.png

www.jianshu.com/p/23eda8bd0396

www.cnblogs.com/andrezheng/p/9778198.html

最后修改:2020 年 06 月 20 日 04 : 12 PM

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