WebUpload 视频上传，支持多视频上传

在项目中使用了WebUpload视频上传，由于对WebUpload的配置参数上不是很了解，走了不少弯路，以下是整理出来的代码。
前台jsp页面只有通过iframe引入该文件即可。

file_uploadMutil.jsp页面

<%@page import="com.jfinal.kit.PropKit"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<% String path = request.getContextPath(); %>
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<title></title>
<link rel="stylesheet" type="text/css" href="<%=path %>/res/webuploader-0.1.5/css/webuploader.css" />
<link rel="stylesheet" type="text/css" href="<%=path %>/res/image-upload/style.css" />
</head>
<body>
<div id="wrapper">
<div id="container">

<div id="uploader">
<div class="queueList">
<div id="dndArea" class="placeholder">
<div id="filePicker"></div>
<p>可将视频拖到这里,支持多张</p>
</div>
</div>
<div class="statusBar" style="display:none;">
<div class="progress">
<span class="text">0%</span>
<span class="percentage"></span>
</div><div class="info"></div>
<div class="btns">
<div id="filePicker2"></div><div class="uploadBtn">开始上传</div>
</div>
</div>
</div>
</div>
</div>
<script type="text/javascript" src="<%=path %>/res/image-upload/jquery.js"></script>
<script type="text/javascript" src="<%=path %>/res/image-upload/cross.js"></script>
<script type="text/javascript" src="<%=path %>/res/webuploader-0.1.5/dist/webuploader.js"></script>
<script type="text/javascript">
// 当domReady的时候开始初始化
$(function() {
var $wrap = $('#uploader'),

// 图片容器
$queue = $( '<ul class="filelist"></ul>' )
.appendTo( $wrap.find( '.queueList' ) ),

// 状态栏，包括进度和控制按钮
$statusBar = $wrap.find( '.statusBar' ),

// 文件总体选择信息。
$info = $statusBar.find( '.info' ),

// 上传按钮
$upload = $wrap.find( '.uploadBtn' ),

// 没选择文件之前的内容。
$placeHolder = $wrap.find( '.placeholder' ),

$progress = $statusBar.find( '.progress' ).hide(),

// 添加的文件数量
fileCount = 0,

// 添加的文件总大小
fileSize = 0,

// 优化retina, 在retina下这个值是2
ratio = window.devicePixelRatio || 1,

// 缩略图大小
thumbnailWidth = 110 * ratio,
thumbnailHeight = 110 * ratio,

// 可能有pedding, ready, uploading, confirm, done.
state = 'pedding',

// 所有文件的进度信息，key为file id
percentages = {},
// 判断浏览器是否支持图片的base64
isSupportBase64 = ( function() {
var data = new Image();
var support = true;
data.onload = data.onerror = function() {
if( this.width != 1 || this.height != 1 ) {
support = false;
}
}
data.src = "data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==";
return support;
} )(),

// 检测是否已经安装flash，检测flash的版本
flashVersion = ( function() {
var version;

try {
version = navigator.plugins[ 'Shockwave Flash' ];
version = version.description;
} catch ( ex ) {
try {
version = new ActiveXObject('ShockwaveFlash.ShockwaveFlash')
.GetVariable('$version');
} catch ( ex2 ) {
version = '0.0';
}
}
version = version.match( /\d+/g );
return parseFloat( version[ 0 ] + '.' + version[ 1 ], 10 );
} )(),

supportTransition = (function(){
var s = document.createElement('p').style,
r = 'transition' in s ||
'WebkitTransition' in s ||
'MozTransition' in s ||
'msTransition' in s ||
'OTransition' in s;
s = null;
return r;
})(),

// WebUploader实例
uploader;

if ( !WebUploader.Uploader.support('flash') && WebUploader.browser.ie ) {

// flash 安装了但是版本过低。
if (flashVersion) {
(function(container) {
window['expressinstallcallback'] = function( state ) {
switch(state) {
case 'Download.Cancelled':
alert('您取消了更新！')
break;

case 'Download.Failed':
alert('安装失败')
break;

default:
alert('安装已成功，请刷新！');
break;
}
delete window['expressinstallcallback'];
};

var swf = './expressInstall.swf';
// insert flash object
var html = '<object type="application/' +
'x-shockwave-flash" data="' + swf + '" ';

if (WebUploader.browser.ie) {
html += 'classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" ';
}

html += 'width="100%" height="100%" style="outline:0">' +
'<param name="movie" value="' + swf + '" />' +
'<param name="wmode" value="transparent" />' +
'<param name="allowscriptaccess" value="always" />' +
'</object>';

container.html(html);

})($wrap);

// 压根就没有安转。
} else {
$wrap.html('<a href="http://www.adobe.com/go/getflashplayer" target="_blank" border="0"><img alt="get flash player" src="http://www.adobe.com/macromedia/style_guide/images/160x41_Get_Flash_Player.jpg" /></a>');
}

return;
} else if (!WebUploader.Uploader.support()) {
alert( 'Web Uploader 不支持您的浏览器！');
return;
}

// 实例化
uploader = WebUploader.create({
pick: {
id: '#filePicker',
label: '点击选择视频',
multiple:false
},
formData: {
uid: 123
},
dnd: '#dndArea',
paste: '#uploader',
swf: '<%=path %>/res/webuploader-0.1.5/dist/Uploader.swf',
// chunked: true,
chunked:false,//不允许分片上传大文件
//chunkSize: 9 * 1024 * 1024,
server: '<%=path %>/upfile',
// runtimeOrder: 'flash',

accept: {
title: 'files',
extensions: 'mpg,m4v,mp4,flv,3gp,mov,avi,rmvb,mkv,wmv',
mimeTypes: 'file/*'
},

// 禁掉全局的拖拽功能。这样不会出现图片拖进页面的时候，把图片打开。
disableGlobalDnd: true,
thumb:{
width: 200,
height: 200,
// 图片质量，只有type为`image/jpeg`的时候才有效。
quality: 70,
// 是否允许放大，如果想要生成小图的时候不失真，此选项应该设置为false.
allowMagnify: false,
// 是否允许裁剪。
crop: true,
// 为空的话则保留原有图片格式。
// 否则强制转换成指定的类型。
type: 'file/mp4'
},
compress:{
width: 600,
height: 600,
// 图片质量，只有type为`image/jpeg`的时候才有效。
quality: 90,
// 是否允许放大，如果想要生成小图的时候不失真，此选项应该设置为false.
allowMagnify: false,
// 是否允许裁剪。
crop: false,
// 是否保留头部meta信息。
preserveHeaders: true,
// 如果发现压缩后文件大小比原来还大，则使用原来图片
// 此属性可能会影响图片自动纠正功能
noCompressIfLarger: false,

// 单位字节，如果图片大小小于此值，不会采用压缩。
compressSize: 20*1024
},
// fileNumLimit: 1, 该文件主要更改
fileSizeLimit: 500 * 1024 * 1024, // 5 M
fileSingleSizeLimit: 500 * 1024 * 1024 // 1 M

});

var array=[];
var videoNames = [];
uploader.on('uploadSuccess',function(file,response ){
array.push(response.savepath);
videoNames.push(response.filename);
$(window.parent.document).find("#files").val(array.join(","));
$(window.parent.document).find("#filenames").val(videoNames.join(","));
});

// 拖拽时不接受 js, txt 文件。
uploader.on( 'dndAccept', function( items ) {
var denied = false,
len = items.length,
i = 0,
// 修改js类型
unAllowed = 'text/plain;application/javascript ';

for ( ; i < len; i++ ) {
// 如果在列表里面
if ( ~unAllowed.indexOf( items[ i ].type ) ) {
denied = true;
break;
}
}

return !denied;
});

uploader.on('dialogOpen', function() {
console.log('here');
});
// 添加“添加文件”的按钮，
uploader.addButton({
id: '#filePicker2',
label: '继续添加'
});

uploader.on('ready', function() {
window.uploader = uploader;
});

// 当有文件添加进来时执行，负责view的创建
function addFile( file ) {
console.log("addfile--file:" + file);
var $li = $( '<li id="' + file.id + '">' +
'<p class="title">' + file.name + '</p>' +
'<p class="imgWrap"></p>'+
'<p class="progress"><span></span></p>' +
'</li>' ),

$btns = $('<div class="file-panel">' +
'<span class="cancel">删除</span>' +
'<span class="rotateRight">向右旋转</span>' +
'<span class="rotateLeft">向左旋转</span></div>').appendTo( $li ),
$prgress = $li.find('p.progress span'),
$wrap = $li.find( 'p.imgWrap' ),
$info = $('<p class="error"></p>'),

showError = function( code ) {
switch( code ) {
case 'exceed_size':
text = '文件大小超出';
break;
case 'interrupt':
text = '上传暂停';
break;
default:
text = '上传失败，请重试';
break;
}

$info.text( text ).appendTo( $li );
};

if ( file.getStatus() === 'invalid' ) {
showError( file.statusText );
} else {
// @todo lazyload
$wrap.text( '预览中' );
uploader.makeThumb( file, function( error, src ) {
var img;
if ( error ) {
$wrap.text( '不能预览' );
return;
}

if( isSupportBase64 ) {
img = $('<video width="160" height="120" controls="controls"><source src="'+src+'" type="video/'+src.substring(src.lastindexof('.'))+'">');
$wrap.empty().append( img );
} else {
$.ajax('../../server/preview.php', {
method: 'POST',
data: src,
dataType:'json'
}).done(function( response ) {
if (response.result) {
img = $('<video width="160" height="120" controls="controls"><source src="'+src+'" type="video/'+src.substring(src.lastindexof('.'))+'">');
$wrap.empty().append( img );
} else {
$wrap.text("预览出错");
}
});
}
}, thumbnailWidth, thumbnailHeight );
percentages[ file.id ] = [ file.size, 0 ];
file.rotation = 0;
}

file.on('statuschange', function( cur, prev ) {
if ( prev === 'progress' ) {
$prgress.hide().width(0);
} else if ( prev === 'queued' ) {
$li.off( 'mouseenter mouseleave' );
$btns.remove();
}

// 成功
if ( cur === 'error' || cur === 'invalid' ) {
console.log( file.statusText );
showError( file.statusText );
percentages[ file.id ][ 1 ] = 1;
} else if ( cur === 'interrupt' ) {
showError( 'interrupt' );
} else if ( cur === 'queued' ) {
$info.remove();
$prgress.css('display', 'block');
percentages[ file.id ][ 1 ] = 0;
} else if ( cur === 'progress' ) {
$info.remove();
$prgress.css('display', 'block');
} else if ( cur === 'complete' ) {
$prgress.hide().width(0);
$li.append( '<span class="success"></span>' );
}

$li.removeClass( 'state-' + prev ).addClass( 'state-' + cur );
});

$li.on( 'mouseenter', function() {
$btns.stop().animate({height: 30});
});

$li.on( 'mouseleave', function() {
$btns.stop().animate({height: 0});
});

$btns.on( 'click', 'span', function() {
var index = $(this).index(),
deg;

switch ( index ) {
case 0:
uploader.removeFile( file );
return;

case 1:
file.rotation += 90;
break;

case 2:
file.rotation -= 90;
break;
}

if ( supportTransition ) {
deg = 'rotate(' + file.rotation + 'deg)';
$wrap.css({
'-webkit-transform': deg,
'-mos-transform': deg,
'-o-transform': deg,
'transform': deg
});
} else {
$wrap.css( 'filter', 'progid:DXImageTransform.Microsoft.BasicImage(rotation='+ (~~((file.rotation/90)%4 + 4)%4) +')');
}

});

$li.appendTo( $queue );
}

// 负责view的销毁
function removeFile( file ) {
var $li = $('#'+file.id);

delete percentages[ file.id ];
updateTotalProgress();
$li.off().find('.file-panel').off().end().remove();
}

function updateTotalProgress() {
var loaded = 0,
total = 0,
spans = $progress.children(),
percent;

$.each( percentages, function( k, v ) {
total += v[ 0 ];
loaded += v[ 0 ] * v[ 1 ];
} );

percent = total ? loaded / total : 0;

spans.eq( 0 ).text( Math.round( percent * 100 ) + '%' );
spans.eq( 1 ).css( 'width', Math.round( percent * 100 ) + '%' );
updateStatus();
}

function updateStatus() {
var text = '', stats;

if ( state === 'ready' ) {
text = '选中' + fileCount + '个视频，共' +
WebUploader.formatSize( fileSize ) + '。';
} else if ( state === 'confirm' ) {
stats = uploader.getStats();
if ( stats.uploadFailNum ) {
text = '已成功上传' + stats.successNum+ '个视频至XX相册，'+
stats.uploadFailNum + '个视频上传失败，<a class="retry" href="#">重新上传</a>失败视频或<a class="ignore" href="#">忽略</a>'
}

} else {
stats = uploader.getStats();
text = '共' + fileCount + '张（' +
WebUploader.formatSize( fileSize ) +
'），已上传' + stats.successNum + '张';

if ( stats.uploadFailNum ) {
text += '，失败' + stats.uploadFailNum + '张';
}
}

$info.html( text );
}

function setState( val ) {
var file, stats;

if ( val === state ) {
return;
}

$upload.removeClass( 'state-' + state );
$upload.addClass( 'state-' + val );
state = val;

switch ( state ) {
case 'pedding':
$placeHolder.removeClass( 'element-invisible' );
$queue.hide();
$statusBar.addClass( 'element-invisible' );
uploader.refresh();
break;

case 'ready':
$placeHolder.addClass( 'element-invisible' );
$( '#filePicker2' ).removeClass( 'element-invisible');
$queue.show();
$statusBar.removeClass('element-invisible');
uploader.refresh();
break;

case 'uploading':
$( '#filePicker2' ).addClass( 'element-invisible' );
$progress.show();
$upload.text( '暂停上传' );
break;

case 'paused':
$progress.show();
$upload.text( '继续上传' );
break;

case 'confirm':
$progress.hide();
$( '#filePicker2' ).removeClass( 'element-invisible' );
$upload.text( '开始上传' );

stats = uploader.getStats();
if ( stats.successNum && !stats.uploadFailNum ) {
setState( 'finish' );
return;
}
break;
case 'finish':
stats = uploader.getStats();
if ( stats.successNum ) {
alert( '上传成功' );
} else {
// 没有成功的视频，重设
state = 'done';
location.reload();
}
break;
}

updateStatus();
}

uploader.onUploadProgress = function( file, percentage ) {
var $li = $('#'+file.id),
$percent = $li.find('.progress span');

$percent.css( 'width', percentage * 100 + '%' );
percentages[ file.id ][ 1 ] = percentage;
updateTotalProgress();
};

uploader.onFileQueued = function( file ) {
fileCount++;
fileSize += file.size;

if ( fileCount === 1 ) {
$placeHolder.addClass( 'element-invisible' );
$statusBar.show();
}

addFile( file );
setState( 'ready' );
updateTotalProgress();
};

uploader.onFileDequeued = function( file ) {
fileCount--;
fileSize -= file.size;

if ( !fileCount ) {
setState( 'pedding' );
}

removeFile( file );
updateTotalProgress();

};

uploader.on( 'all', function( type ) {
var stats;
switch( type ) {
case 'uploadFinished':
setState( 'confirm' );
break;

case 'startUpload':
setState( 'uploading' );
break;

case 'stopUpload':
setState( 'paused' );
break;

}
});

uploader.onError = function( code ) {
console.log(code);
if (code == "Q_EXCEED_NUM_LIMIT") {
alert("只能上传1个视频");
}else if(code=='Q_EXCEED_SIZE_LIMIT'){
alert('添加的文件总大小超出最大值500M');
}else if(code=='F_EXCEED_SIZE'){
alert('上传视频不能超过500M');
}else{
alert('非法的文件类型');
}

};

$upload.on('click', function() {
if ( $(this).hasClass( 'disabled' ) ) {
return false;
}

if ( state === 'ready' ) {
uploader.upload();
} else if ( state === 'paused' ) {
uploader.upload();
} else if ( state === 'uploading' ) {
uploader.stop();
}
});

$info.on( 'click', '.retry', function() {
uploader.retry();
} );

$info.on( 'click', '.ignore', function() {
alert( 'todo' );
} );

$upload.addClass( 'state-' + state );
updateTotalProgress();
});
</script>
</body>
</html>

刚开始的时候由于有chunked参数，导致上传大视频文件的时候会产生多个小文件，chunkSize为分片文件大小。

前台页面引入方式：

<tr>
<td class="value" width="20%"><label class="Validform_label">视频上传</label></td>
<td class="txt_value" colspan="3">
<div style="width:588px;height: 312px;">
<iframe scrolling="no" frameborder="0" id="FrameVideoID" name="FrameVideoID" src="<%=path%>/res/image-upload/file_uploadMutil.jsp" style="width:90%;height:100%;"></iframe>
<input type="hidden" id="files" name="files"/>
<input type="hidden" id="filenames" name="filenames"/>
</div>
</td>
</tr>
引入WebUpload的js和css等文件，最后运行效果如下。