记一次WebUploader的使用
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：
这个样子是默认的效果。
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。
这个是上传过程显示的效果。
<div id="container">
--头部，相册选择和格式选择-->
<div id="uploader">
<div class="queueList">
<div id="dndArea" class="placeholder">
<div id="filePicker">div>
text name="resource.upload.tip"/>
div>
div>
<div class="statusBar" style="display:none;">
<div class="progress">
class="text">0%
class="percentage">
div>
<div class="info">div>
<div class="btns">
<div id="filePicker2">div>
<div class="uploadBtn">text name="resource.starttoupload"> 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 = $(' class="filelist">') .appendTo($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 = ' data="' + swf + '" '; if (WebUploader.browser.ie) { html += 'classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" '; } html += 'width="100%" height="100%" style="outline:0">' + '"movie" value="' + swf + '" />' + '"wmode" value="transparent" />' + '"allowscriptaccess" value="always" />' + ''; container.html(html); })($wrap); // 压根就没有安转。 } else { $wrap.html(' href="http://www.adobe.com/go/getflashplayer" target="_blank" border="0">![<span]()
"get flash player" src="http://www.adobe.com/macromedia/style_guide/images/160x41_Get_Flash_Player.jpg" />'); } 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: ':text name="resource.addmore">: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 = $( '"' + file.id + '" >' + '"title"
>' + file.name + '' + '"imgWrap"
>'+ '"progress">
' + '' ), $btns = $(' class="file-panel">' + '"cancel">:text name="resource.delete">:text>' + '"rotateRight">:text name="resource.rotateToRight"> :text>' + '"rotateLeft">:text name="resource.rotateToLeft"> :text>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。