图片上传插件WebUploader的坑
2024-09-08 17:22:07
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:
<script type="text/javascript" src="~/lib/webuploader/0.1.5/webuploader.min.js"></script>
<link href="~/lib/webuploader/0.1.5/webuploader.css" rel="stylesheet" type="text/css" />
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 = $('<ul class="filelist"></ul>')
.appendTo($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-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 = $('<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 = $('<img src="' + src + '">');
$wrap.empty().append(img);
} else {
$.ajax('/House/UploadPic', {
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') {
percentages[file.id][1] = 0;
} else if (cur === 'progress') {
$info.remove();
$prgress.css('display', 'block');
} else if (cur === 'complete') {
$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) + ')');
// 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，<a class="retry" href="#">重新上传</a>失败图片或<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
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