图片上传插件WebUploader的坑
【图片上传插件WebUploader的坑】需要上传图片的一个操作选择了WebUploader这个插件来实现,具体的实现过程如下。
js代码:
1、引入js、css文件:
2、上传代码:
(function ($) { // 当domReady的时候开始初始化 $(function () { var $wrap = $('.uploader-list-container'),// 图片容器 $queue = $('') .appendTo($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 = $statusBar.find('.progress').hide(),// 添加的文件数量 fileCount = 0,// 添加的文件总大小 fileSize = 0,// 优化retina, 在retina下这个值是2 ratio = window.devicePixelRatio || 1,// 缩略图大小 thumbnailWidth = 110 * ratio, thumbnailHeight = 110 * ratio,// 可能有pedding, ready, uploading, confirm, done. state = 'pedding',// 所有文件的进度信息,key为file id percentages = {}, // 判断浏览器是否支持图片的base64 isSupportBase64 = (function () { var data = https://www.it610.com/article/new Image(); var support = true; data.onload = data.onerror = function () { if (this.width != 1 || this.height != 1) { support = false; } } data.src ="data:image/gif; base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw=="; return support; })(),// 检测是否已经安装flash,检测flash的版本 flashVersion = (function () { var version; try { version = navigator.plugins['Shockwave Flash']; version = version.description; } catch (ex) { try { version = new ActiveXObject('ShockwaveFlash.ShockwaveFlash') .GetVariable('$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 = ''; container.html(html); })($wrap); // 压根就没有安转。 } else { $wrap.html('
文章图片
'); }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-2', label: '点击选择图片' }, formData: { houseId:'@(Model)' }, dnd: '#dndArea', paste: '#uploader', swf: '/lib/webuploader/0.1.5/Uploader.swf', chunked: false, chunkSize: 512 * 1024, //server: 'http://lib.h-ui.net/webuploader/0.1.5/server/fileupload.php', server: '/House/UploadPic', // runtimeOrder: 'flash',// accept: { //title: 'Images', //extensions: 'gif,jpg,jpeg,bmp,png', //mimeTypes: 'image/*' // },// 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; }); uploader.on('dialogOpen', function () { console.log('here'); }); // uploader.on('filesQueued', function() { //uploader.sort(function( a, b ) { //if ( a.name < b.name ) //return -1; //if ( a.name > b.name ) //return 1; //return 0; //}); // }); uploader.on('uploadSuccess', function (file, response) { if (response.status!="Ok") { alert(response.errorMsg); showError(response.errorMsg); } //var imgurl = response_raw; //上传图片的路径 //alert(imgurl); }); // 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) { var $li = $('' + '' + file.name + ' '),$btns = $('' + '删除' + '向右旋转' + '向左旋转').appendTo($li), $prgress = $li.find('p.progress span'), $wrap = $li.find('p.imgWrap'), $info = $('
' + '
' + '
' + '
'),showError = function (code) { switch (code) { case 'exceed_size': text = '文件大小超出'; break; case 'interrupt': text = '上传暂停'; break; default: text = '上传失败,请重试'; break; }$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 = $('
文章图片
'); $wrap.empty().append(img); } else { $.ajax('/House/UploadPic', { method: 'POST', data: src, dataType: 'json' }).done(function (response) { if (response.result) { img = $('
文章图片
'); $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') { percentages[file.id][1] = 0; } else if (cur === 'progress') { $info.remove(); $prgress.css('display', 'block'); } else if (cur === 'complete') { $li.append(''); }$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) + ')'); // use jquery animate to rotation // $({ //rotation: rotation // }).animate({ //rotation: file.rotation // }, { //easing: 'linear', //step: function( now ) { //now = now * Math.PI / 180; //var cos = Math.cos( now ), //sin = Math.sin( now ); //$wrap.css( 'filter', "progid:DXImageTransform.Microsoft.Matrix(M11=" + cos + ",M12=" + (-sin) + ",M21=" + sin + ",M22=" + cos + ",SizingMethod='auto expand')"); //} // }); }}); $li.appendTo($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; $.each(percentages, function (k, v) { total += v[0]; loaded += v[0] * v[1]; }); percent = total ? loaded / total : 0; spans.eq(0).text(Math.round(percent * 100) + '%'); spans.eq(1).css('width', Math.round(percent * 100) + '%'); updateStatus(); }function updateStatus() { var text = '', stats; if (state === 'ready') { text = '选中' + fileCount + '张图片,共' + WebUploader.formatSize(fileSize) + '。'; } else if (state === 'confirm') { stats = uploader.getStats(); if (stats.uploadFailNum) { text = '已成功上传' + stats.successNum + '张照片至XX相册,' + stats.uploadFailNum + '张照片上传失败,重新上传失败图片或忽略' }} else { stats = uploader.getStats(); text = '共' + fileCount + '张(' + WebUploader.formatSize(fileSize) + '),已上传' + stats.successNum + '张'; if (stats.uploadFailNum) { text += ',失败' + stats.uploadFailNum + '张'; } }$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 { // 没有成功的图片,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) { alert('Eroor: ' + code); }; $upload.on('click', function () { if ($(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(); }); })(jQuery);
3、坑1:上传地址配置在WebUploader.create 中的 server 属性中
4、坑2:提交到服务器端的图片必须有一个houseId,该数据配置在WebUploader.create 中formData属性中
5、坑3:如果上传成功,则与服务器的交互定义方式:
uploader.on('uploadSuccess', function (file, response) { if (response.status!="Ok") { alert(response.errorMsg); showError(response.errorMsg); } });
6、服务器的接收:
public ActionResult UploadPic(long houseId, HttpPostedFileBase file) { string cacleFileName = CacleMD5.CalcMD5(file.InputStream); string ext = Path.GetExtension(file.FileName); string path = "/upload/" + DateTime.Now.ToString("yyyy/MM/dd") + "/" + cacleFileName + ext; string fullPath = HttpContext.Server.MapPath("~" + path); //拿到服务器上的绝对路径。 new FileInfo(fullPath).Directory.Create(); //尝试创建可能不存在的文件夹file.InputStream.Position = 0; //指针复位 file.SaveAs(fullPath); houseSer.AddNewHousePic(new HousePicDTO { HouseId = houseId, Url = path, ThumbUrl = path }); //将文件保存,保存到该系统的根目录下,以HouseId为文件名。 //file.SaveAs(HttpContext.Server.MapPath("~/" + houseId + Path.GetExtension(file.FileName))); // return Content("ok"); return Json(new AjaxResult { Status = "Ok" }); }
参考:
1)、http://pdf-lib.org/Home/Details/471
2)、https://github.com/fex-team/webuploader/issues/2258
3)、http://www.alicartoon.com/2016/08/01/webuploader-shang-chuan-da-tu-pian-fen-pian-shang-chuan-da-tu-pian/
4)、http://www.cnblogs.com/wisdo/p/6159761.html
5)、http://www.open-open.com/lib/view/open1421293847328.html
转载于:https://www.cnblogs.com/fly-cjh/p/7108107.html