jquery文件上传控件 WebUploader

WebUploader是百度开源的一个文件上传组件，因为其操作简洁大方，就在项目中使用了，记录一下。

效果是这样子：

这里写图片描述

这个样子是默认的效果。

这里写图片描述

这个是选择上传的图片，可以批量，选择后可以删除和添加更多。

这里写图片描述

这个是上传过程显示的效果。

<div id="container">

<div id="uploader">
<div class="queueList">
<div id="dndArea" class="placeholder">
<div id="filePicker"></div>
<p><s:text name="resource.upload.tip"/></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"><s:text name="resource.starttoupload"></s:text></div>
</div>
</div>
</div>
</div>

js部分代码，下面这段代码是webuploader官方的示例代码uploader.js做的修改：

(function( $ ){
// 当domReady的时候开始初始化
$(function() {
var filePerSize = [];//每个文件大小
var fileName = [];
var fileSize = 0;
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 not support your browser！');
return;
}
// 实例化
uploader = WebUploader.create({
pick: {
id: '#filePicker',
name: 'multiFile',
label: 'Click To Select'
},
formData: {
"status": "multi",
"contentsDto.contentsId": "xxxx",
"uploadNum": "xxxx",
"existFlg": "false",
},
dnd: '#dndArea',
paste: '#uploader',
method: 'POST',
swf: '../../dist/Uploader.swf',
chunked: false,
chunkSize: 512 * 1024,
chunkRetry:false,
server: 'resource/upload.action?resourcetype=hd',
fileVal:'multiFile',
resize: false,
// runtimeOrder: 'flash',
/* accept: {
title: 'Images',
extensions: 'gif,jpg,bmp,png,m2v',
mimeTypes: 'image/*,video/mpeg',
}, */
// 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,
fileNumLimit: 300,
fileSizeLimit: 200 * 1024 * 1024, // 200 M
fileSingleSizeLimit: 50 * 1024 * 1024 // 50 M
});
// 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;
});
//点击按钮弹出选择框
/*uploader.on('dialogOpen', function() {
console.log('here');
});*/
// 添加"添加文件"的按钮，
uploader.addButton({
id: '#filePicker2',
label: '<s:text name="resource.addmore"></s:text>'
});
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 ) {
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"><s:text name="resource.delete"></s:text></span>' +
'<span class="rotateRight"><s:text name="resource.rotateToRight"></s:text></span>' +
'<span class="rotateLeft"><s:text name="resource.rotateToLeft"></s:text></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 = '<s:text name="resource.exceedSize"></s:text>';
break;
case 'interrupt':
text = '<s:text name="resource.pauseupload"></s:text>';
break;
default:
text = '<s:text name="resource.uploadfailed"></s:text>';
break;
}
$info.text( text ).appendTo( $li );
};
if ( file.getStatus() === 'invalid' ) {
showError( file.statusText );
} else {
// @todo lazyload
$wrap.text( '<s:text name="resource.onPreview"></s:text>' );
uploader.makeThumb( file, function( error, src ) {
var img;
if ( error ) {
$wrap.text( '<s:text name="resource.unablePreview"></s:text>' );
return;
}
if( isSupportBase64 ) {
img = $('<img src="'+src+'">');
$wrap.empty().append( img );
} else {
/*$.ajax('../../server/preview.php', {
method: 'POST',
data: src,
dataType:'json'
}).done(function( response ) {
if (response.result) {
img = $('<img src="'+response.result+'">');
$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 = '<s:text name="resource.selected"></s:text>' + fileCount + ', <s:text name="resource.totalSize"></s:text>' +
WebUploader.formatSize(fileSize);
} else if ( state === 'confirm' ) {
stats = uploader.getStats();
if ( stats.uploadFailNum ) {
text = '<s:text name="resource.uploaded"></s:text>' + stats.successNum+ ', <s:text name="resource.failed"></s:text>'+
stats.uploadFailNum + ', <a class="retry" href="#" style="color:red;">' + '<s:text name="resource.retry"></s:text>'+'</a> <s:text name="resource.or"></s:text><a class="ignore" href="#" style="color:blue;"> <s:text name="resource.ignore"></s:text></a>'
}
} else {
stats = uploader.getStats();
text = '<s:text name="resource.total"></s:text>' + fileCount + '(' +
WebUploader.formatSize( fileSize ) +
'), <s:text name="resource.uploaded"></s:text>:' + stats.successNum;
if ( stats.uploadFailNum ) {
text += ', <s:text name="resource.failed"></s:text>:' + stats.uploadFailNum;
}
}
$info.html(text);
}
/*关闭上传框窗口后恢复上传框初始状态*/
function closeUploader() {
// 移除所有缩略图并将上传文件移出上传序列
for (var i = 0; i < uploader.getFiles().length; i++) {
// 将图片从上传序列移除
uploader.removeFile(uploader.getFiles()[i]);
// 将图片从缩略图容器移除
var $li = $('#' + uploader.getFiles()[i].id);
$li.off().remove();
}
setState('pedding');
// 重置文件总个数和总大小
fileCount = 0;
fileSize = 0;
// 重置uploader，目前只重置了文件队列
uploader.reset();
// 更新状态等，重新计算文件总个数和总大小
updateStatus();
}
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( '<s:text name="resource.pauseupload"></s:text>' );
var fileArray1 = uploader.getFiles();
var fileNames = [];
fileSize = 0;
for(var i=0; i<fileArray1.length; i++) {
fileNames.push(fileArray1[i].name);
fileSize += fileArray1[i].size;
filePerSize.push(fileArray1[i].size);
fileName.push(fileArray1[i].name);
}
$.extend(true, uploader.options.formData, {"fileSize": fileSize, "multiFileName": fileName, "filePerSize": filePerSize});
break;
case 'paused':
$progress.show();
$upload.text('<s:text name="resource.continueupload"></s:text>');
break;
case 'confirm':
$progress.hide();
$('#filePicker2').removeClass('element-invisible');
$upload.text('<s:text name="resource.starttoupload"></s:text>');
stats = uploader.getStats();
if (stats.successNum && !stats.uploadFailNum) {
setState('finish');
return;
}
break;
case 'finish':
stats = uploader.getStats();
//alert(stats.successNum);
if (stats.successNum) {
if(flag) {
//alert('上传成功');
confirmBox("<s:text name='resource.tiptitle'></s:text>",
"Upload Success",
function(tag) {
if (tag) {
var url = 'resource/uploadHd.jsp';
loadUrl(url);
} else {
return;
}
});
$("#boxwhite a[name=f]").html("<s:text name="box.no"/>").hide();
$("#boxwhite a[name=t]").html("<s:text name="box.sure"/>");
} else {
loadUrl('resource/uploadHd.jsp');
}
//刷新界面
//setTimeout("loadUrl('resource/uploadHd.jsp')", 1000);
} else {
// 没有成功的图片，重设
state = 'done';
location.reload();
}
break;
}
updateStatus();
}
var flag = true;
uploader.on("uploadAccept", function(object, ret){
if(ret != null && ret != '') {
var data = JSON.parse(ret._raw);
if(data != null && data != '') {
if(data.resultCode == '1' || data.resultCode == '2') {
var tip = '';
if(data.resultCode == '1') {
tip = "<s:text name='resource.fileExists'></s:text>";
}else {
tip = "<s:text name='resource.fileTypeError'></s:text>" + data.message;
}
confirmBox("<s:text name='resource.tiptitle'></s:text>",
tip,
function(tag) {
if (tag) {
flag = false;
updateStatus();
var url = 'resource/uploadHd.jsp';
loadUrl(url);
} else {
return;
}
});
$("#boxwhite a[name=f]").html("<s:text name="box.no"/>").hide();
$("#boxwhite a[name=t]").html("<s:text name="box.sure"/>");
} else {
flag = true;
}
}
}
});
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.on("uploadError", function(file, reason){
alert("uploadError");
});
uploader.onFileQueued = function(file) {
fileCount++;
fileSize += file.size;
if (fileCount === 1) {
$placeHolder.addClass('element-invisible');
$statusBar.show();
}
addFile(file);
setState('ready');
updateTotalProgress();
};
/**
* 移出队列
*/
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 ) {
if (type=="Q_TYPE_DENIED"){
//dialogMsg("myModal","messageP","请上传JPG、PNG格式文件");
}else if(type=="F_EXCEED_SIZE"){
//dialogMsg("myModal","messageP","文件大小不能超过8M");
}
uploader.reset();
fileSize = 0;
fileName = [];
filePerSize = [];
};
/**
* 点击上传按钮
*/
$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();
}
});
/**
* 点击重试按钮
*/
$info.on( 'click', '.retry', function() {
uploader.retry();
} );
/**
* 点击忽略按钮
*/
$info.on( 'click', '.ignore', function() {
//执行忽略动作，把图片清除
closeUploader();
});
$upload.addClass( 'state-' + state );
updateTotalProgress();
});
})( jQuery );

使用Action接收时，可以这么写：

//多文件上传的文件对象，多文件是一个一个文件上传，所以multiFile是当前正在上传的文件对象
private File multiFile;
//多文件上传文件对象的名称，当前正在上传的文件名
private String multiFileFileName;
//所有文件的总大小
private String fileSize;
//文件名列表
private String[] multiFileName;
//每个文件的大小
private String[] filePerSize;
public void setMultiFile(File multiFile) {
this.multiFile = multiFile;
}
public File getMultiFile() {
return multiFile;
}
public void setMultiFileFileName(String multiFileFileName) {
this.multiFileFileName = multiFileFileName;
}
public void setFileSize(String fileSize) {
this.fileSize = fileSize;
}
public void setMultiFileName(String[] multiFileName) {
this.multiFileName = multiFileName;
}
public void setFilePerSize(String[] filePerSize) {
this.filePerSize = filePerSize;
}
public void uploadFile() {
String physicPath = Constant.AD_RESOURCE_BASE_DIR;
String subPath = "";
int resolution = -1;
String type = request.getParameter("resourcetype");
if(StringUtils.isNotBlank(type)) {
if(Constant.RESOURCE_TYPE_HD.equals(type)) {
subPath = Constant.AD_RESOURCE_HD_DIR;
resolution = 1;
} else if(Constant.RESOURCE_TYPE_SD.equals(type)) {
subPath = Constant.AD_RESOURCE_SD_DIR;
resolution = 0;
}
}
File fdir = new File(physicPath+"/"+subPath);
if(!fdir.exists()) {
fdir.mkdirs();
}
String resPath = "/" + subPath + "/" + multiFileFileName;
String path = physicPath + resPath;//文件路径
PrintWriter out = null;
try {
out = response.getWriter();
} catch (IOException e) {
log.error(e);
}
if(!isValidResource(multiFileFileName.substring(multiFileFileName.lastIndexOf(".") + 1))) {
ResultJson resultJson = new ResultJson();
resultJson.setResultCode("2");
resultJson.setMessage(multiFileFileName);
out.print(JsonUtil.toJsonString(resultJson));
return;
}
try {
File file = this.getMultiFile();
//判断文件是否已经存在，不存在则存，否则不存
String savePath = path.substring(path.lastIndexOf("/" + Constant.AD_RESOURCE_STORE_BASE_DIR));
boolean isExists = adResourceService.queryFile(savePath);//linux下图片名区分大小写
log.info("isExist=" + isExists);
if(isExists) {
ResultJson resultJson = new ResultJson();
resultJson.setResultCode("1");
resultJson.setMessage("same name file exists!");
response.getWriter().print(JsonUtil.toJsonString(resultJson));
return;
} else {
ResultJson resultJson = new ResultJson();
resultJson.setResultCode("0");
resultJson.setMessage("ok");
response.getWriter().print(JsonUtil.toJsonString(resultJson));
}
FileUtil.randomAccessFile(path, file);
log.info("upload finish....");
//insert into db.
File f = new File(path);
//1:bmp;2:jpg;3:gif;4:png;5:mpg;6:m2v
log.info("f.exists()=" + f.exists());
if(f.exists()) {
String fname = f.getName();
log.info("filename=" + fname);
String fsuffix = fname.substring(fname.lastIndexOf(".") + 1);
if(fname.endsWith(".bmp") || fname.endsWith(".BMP") || fname.endsWith(".jpg") || fname.endsWith(".JPG")
|| fname.endsWith(".gif") || fname.endsWith(".GIF") || fname.endsWith(".png") || fname.endsWith(".PNG")) {
BufferedImage bimg = ImageIO.read(f);
int picWidth = bimg.getWidth();
int picHeight = bimg.getHeight();
int picType = 0;
switch (fsuffix.toLowerCase()) {
case Constant.IMG_FORMAT_BMP:
picType = 1;
break;
case Constant.IMG_FORMAT_JPG:
picType = 2;
break;
case Constant.IMG_FORMAT_PNG:
picType = 4;
break;
case Constant.IMG_FORMAT_GIF:
picType = 3;
break;
}
System.out.println("fileSize=" + file.length());
log.info("fileSize=" + file.length());
adResourceService.upload(resolution, resPath, picHeight, picWidth, (int)file.length(), picType, fsuffix);
} else if(fname.endsWith(".mpg") || fname.endsWith(".MPG") || fname.endsWith(".m2v") || fname.endsWith(".M2V")) {
//截取画像,获取分辨率
//mpg , m2v,直接把文件路径存进去，在预览的时候动态生成帧画面
int picType = 0;
if(fname.endsWith(".mpg") || fname.endsWith(".MPG")) {
picType = 5;
} else if(fname.endsWith(".m2v") || fname.endsWith(".M2V")) {
picType = 6;
}
boolean b = FFmpegUtil.transfer(path, path+".jpg");//在文件名后直接加后缀，然后存到数据库中
if(b) {
File snapFile = new File(path+".jpg");
BufferedImage bimg = ImageIO.read(snapFile);
int picWidth = bimg.getWidth();
int picHeight = bimg.getHeight();
//update db.
adResourceService.uploadVideo(resolution, resPath, picHeight, picWidth, (int)file.length(), picType, fsuffix, resPath+".jpg");
} else {
log.error("generate snapshot file failed from " + path);
}
} else {
log.error("file type invalid, we delete it...");
f.delete();
}
}
} catch (IOException e) {
e.printStackTrace();
log.error(e);
}
}

实际场景中可以根据自己的需要进行修改。

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