最主要的是使用到了一个jquery的插件jquery.media.js，使用这个插件就很容易实现了。
核心代码
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh-CN" dir="ltr">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
<title>Online View PDF</title>
<script type="text/javascript" src="http://sources.ikeepstudying.com/js/jquery-1.8.3.min.js"></script>
<script type="text/javascript" src="jquery.media.js"></script>
<script type="text/javascript">
$(function() {
$('a.media').media({width:800, height:600});
});
</script>
</head>
<body>
<a class="media" href="guice.pdf">PDF File</a>
</body>
</html>
查看预览：http://sources.ikeepstudying.com/jquery.media/pdf.php
使用jquery.media.js就可以直接把一个连接到pdf文件的链接打开，满足了需求。
项目地址：http://jquery.malsup.com/media/
或者复制下面的代码：（Jun 5, 2013）
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: 400,
height: 400,
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);
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它可以解析PDF文件并将其转换为可操作的像素，使得在没有PDF阅读器插件的情况下也能预览PDF。在微信浏览器中，由于安全和隐私的考虑，可能需要使用这种库来避免直接链接到PDF文件。 3. **手势识别**：为了实现手势...
在现代Web应用中，将PDF文件直接在前端页面展示给用户是一种常见的需求，尤其是在文档分享、在线阅读和教育领域。本篇文章将详细讲解如何利用给定的`touchpdf-master`压缩包来实现这一功能。 首先，`touchpdf-...