对百度WebUploader的二次封装,精简前端代码之图片预览上传(两句代码搞定上传)
前言
本篇文章上一篇:
对百度WebUploader开源上传控件的二次封装,精简前端代码(两句代码搞定上传)
此篇是在上面的基础上扩展出来专门上传图片的控件封装.
首先我们看看效果:
正文
使用方式同样很简单,首先创建HTML容器如下:
<div id="uploader" class="uploaderPic"> </div>
然后页面加载完成后渲染:
$(function () {
$("#uploader").powerWebUpload({ auto: false });
})
就搞定了.
下面还是老规矩,直接上源码:
/*
基于百度webuploader的图片上传JQ插件(需引用JQ)
作者:顾振印
时间:2016-07-07
*/
(function ($, window) {
var applicationPath = window.applicationPath === "" ? "" : window.applicationPath || "../..";
var UpdataLoadarrayObj = new Array();
function SuiJiNum() {
return (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1);
}
function initWebUpload(item, options) {
if (!WebUploader.Uploader.support()) {
var error = "上传控件不支持您的浏览器！请尝试升级flash版本或者使用Chrome引擎的浏览器。<a target='_blank' href='http://se.360.cn'>下载页面</a>";
if (window.console) {
window.console.log(error);
}
$(item).text(error);
return;
}
var target = $(item);//容器
if (target.find(".uploader-list").length > 0) {
return;
}
//创建默认参数
var defaults = {
auto: true,
hiddenInputId: "uploadifyHiddenInputId", // input hidden id
onAllComplete: function (event) { }, // 当所有file都上传后执行的回调函数
onComplete: function (event) { },// 每上传一个file的回调函数
fileNumLimit: undefined,//验证文件总数量, 超出则不允许加入队列
fileSizeLimit: undefined,//验证文件总大小是否超出限制, 超出则不允许加入队列。
fileSingleSizeLimit: undefined,//验证单个文件大小是否超出限制, 超出则不允许加入队列
PostbackHold: false
};
var opts = $.extend(defaults, options);
var hdFileData = $("#" + opts.hiddenInputId);
var pickerid = "";
if (typeof guidGenerator36 != 'undefined')//给一个唯一ID
pickerid = guidGenerator36();
else
pickerid = (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1);
var uploaderStrdiv = '<div class="webuploader">'
if (opts.auto) {
uploaderStrdiv =
'<div class="uploader-list"></div>' +
'<div class="btns">' +
'<div id="' + pickerid + '">选择文件</div>' +
'</div>'
} else {
uploaderStrdiv =
'<div class="uploader-list"></div>' +
'<div class="btns">' +
'<div id="' + pickerid + '">选择文件</div>' +
'<button class="webuploadbtn">开始上传</button>' +
'</div>'
}
uploaderStrdiv += '<div style="display:none" class="UploadhiddenInput" >
</div>'
uploaderStrdiv += '</div>';
target.append(uploaderStrdiv);
var $list = target.find('.uploader-list'),
$btn = target.find('.webuploadbtn'),//手动上传按钮备用
state = 'pending',
$hiddenInput = target.find('.UploadhiddenInput')
var jsonData = {
fileList: []
};
debugger;
var webuploaderoptions = $.extend({
// swf文件路径
swf: applicationPath + '/Scripts/webuploader/Uploader.swf',
// 文件接收服务端。
server: '/Home/AddFile',
deleteServer: '/Home/DeleteFile',
// 选择文件的按钮。可选。
// 内部根据当前运行是创建，可能是input元素，也可能是flash.
pick: '#' + pickerid,
//不压缩image, 默认如果是jpeg，文件上传前会压缩一把再上传！
resize: false,
runtimeOrder: 'flash',
fileNumLimit: opts.fileNumLimit,
fileSizeLimit: opts.fileSizeLimit,
fileSingleSizeLimit: opts.fileSingleSizeLimit,
//限制只能上传图片,格式gif,jpg,jpeg,bmp,png
accept: {
title: 'Images',
extensions: 'gif,jpg,jpeg,bmp,png',
mimeTypes: 'image/*'
}
},
opts);
var uploader = WebUploader.create(webuploaderoptions);
UpdataLoadarrayObj[$(item)[0].id] = uploader;
var ratio = window.devicePixelRatio || 1
// 缩略图大小
var thumbnailWidth = 110 * ratio
var thumbnailHeight = 110 * ratio
if (opts.auto) {
// 优化retina, 在retina下这个值是2
uploader.on('fileQueued', function (file) {
var $li = $('<div id="' + $(item)[0].id + file.id + '" class="file-item thumbnail">' +
'<img>' +
'<div class="info">' + file.name + '</div>' +
'</div>');
$img = $li.find('img');
uploader.makeThumb(file, function (error, src) {
if (error) {
$img.replaceWith('<span>不能预览</span>');
return;
}
$img.attr('src', src);
}, thumbnailWidth, thumbnailHeight);
// $list为容器jQuery实例
$list.append($li);
$btns = $('<div class="file-panel">' +
'<span class="cancel">删除</span>').appendTo($li)
uploader.upload();
});
} else {
uploader.on('fileQueued', function (file) {//队列事件
var $li = $('<div id="' + $(item)[0].id + file.id + '" class="file-item thumbnail">' +
'<img>' +
'<div class="info">' + file.name + '</div>' +
'</div>');
$img = $li.find('img');
uploader.makeThumb(file, function (error, src) {
if (error) {
$img.replaceWith('<span>不能预览</span>');
return;
}
$img.attr('src', src);
}, thumbnailWidth, thumbnailHeight);
// $list为容器jQuery实例
$list.append($li);
$btns = $('<div class="file-panel">' +
'<span class="cancel">删除</span>').appendTo($li)
});
}
// 文件上传过程中创建进度条实时显示。
uploader.on('uploadProgress', function (file, percentage) {
var $li = $('#' + $(item)[0].id + file.id),
$percent = $li.find('.progress span');
// 避免重复创建
if (!$percent.length) {
$percent = $('<p class="progress"><span></span></p>')
.appendTo($li)
.find('span');
}
$percent.css('width', percentage * 100 + '%');
});
// 文件上传成功，给item添加成功class, 用样式标记上传成功。
uploader.on('uploadSuccess', function (file, response) {
$('#' + $(item)[0].id + file.id).addClass('upload-state-done');
var $li = $('#' + $(item)[0].id + file.id),
$error = $li.find('div.error');
// 避免重复创建
if (!$error.length) {
$error = $('<div class="success"></div>').appendTo($li);
}
if (response.state == "error") {
$error.text(response.message);
} else {
$error.text('上传完成');
$hiddenInput.append('<input type="text" id="hiddenInput' + $(item)[0].id + file.id + '" class="hiddenInput" value="' + response.message + '" />')
}
});
// 文件上传失败，显示上传出错。
uploader.on('uploadError', function (file) {
var $li = $('#' + $(item)[0].id + file.id),
$error = $li.find('div.error');
// 避免重复创建
if (!$error.length) {
$error = $('<div class="error"></div>').appendTo($li);
}
$error.text('上传失败');
});
// 完成上传完了，成功或者失败，先删除进度条。
uploader.on('uploadComplete', function (file, response) {
$('#' + $(item)[0].id + file.id).find('.progress').remove();
});
//uploader.on('uploadProgress', function (file, percentage) {//进度条事件
// var $li = target.find('#' + $(item)[0].id + file.id),
// $percent = $li.find('.progress .bar');
// // 避免重复创建
// if (!$percent.length) {
// $percent = $('<span class="progress">' +
// '<span class="percentage"><span class="text"></span>' +
// '<span class="bar" role="progressbar" style=" 0%">' +
// '</span></span>' +
// '</span>').appendTo($li).find('.bar');
// }
// $li.find('span.webuploadstate').html('上传中');
// $li.find(".text").text(Math.round(percentage * 100) + '%');
// $percent.css('width', percentage * 100 + '%');
//});
//uploader.on('uploadSuccess', function (file, response) {//上传成功事件
// if (response.state == "error") {
// target.find('#' + $(item)[0].id + file.id).find('span.webuploadstate').html(response.message);
// } else {
// target.find('#' + $(item)[0].id + file.id).find('span.webuploadstate').html('已上传');
// $hiddenInput.append('<input type="text" id="hiddenInput' + $(item)[0].id + file.id + '" class="hiddenInput" value="' + response.message + '" />')
// }
//});
//uploader.on('uploadError', function (file) {
// target.find('#' + $(item)[0].id + file.id).find('span.webuploadstate').html('上传出错');
//});
//uploader.on('uploadComplete', function (file) {//全部完成事件
// target.find('#' + $(item)[0].id + file.id).find('.progress').fadeOut();
//});
uploader.on('all', function (type) {
if (type === 'startUpload') {
state = 'uploading';
} else if (type === 'stopUpload') {
state = 'paused';
} else if (type === 'uploadFinished') {
state = 'done';
}
if (state === 'uploading') {
$btn.text('暂停上传');
} else {
$btn.text('开始上传');
}
});
//删除时执行的方法
uploader.on('fileDequeued', function (file) {
debugger;
var fullName = $("#hiddenInput" + $(item)[0].id + file.id).val();
if (fullName != null) {
$.post(webuploaderoptions.deleteServer, { fullName: fullName }, function (data) {
// alert(data.message);
})
}
$("#" + $(item)[0].id + file.id).remove();
$("#hiddenInput" + $(item)[0].id + file.id).remove();
})
//多文件点击上传的方法
$btn.on('click', function () {
if (state === 'uploading') {
uploader.stop();
} else {
uploader.upload();
}
});
//删除
$list.on("click", ".file-panel", function () {
debugger
var $ele = $(this);
var id = $ele.parent().attr("id");
var id = id.replace($(item)[0].id, "");
var file = uploader.getFile(id);
uploader.removeFile(file);
});
}
$.fn.CleanUpload = function (options) {
var uploadrFile = UpdataLoadarrayObj[$(this).attr("id")]
var fileslist = uploadrFile.getFiles();
for (var i in fileslist) {
uploadrFile.removeFile(fileslist[i]);
}
//var ele = $(this);
//var filesdata = ele.find(".UploadhiddenInput");
//filesdata.find(".hiddenInput").remove();
//ele.find(".uploader-list .item").remove();
}
$.fn.GetFilesAddress = function (options) {
var ele = $(this);
var filesdata = ele.find(".UploadhiddenInput");
var filesAddress = [];
filesdata.find(".hiddenInput").each(function () {
filesAddress.push($(this).val());
})
return filesAddress;
}
$.fn.powerWebUpload = function (options) {
var ele = this;
if (typeof WebUploader == 'undefined') {
var casspath = applicationPath + "/Scripts/webuploader/webuploader.css";
$("<link>").attr({ rel: "stylesheet", type: "text/css", href: casspath }).appendTo("head");
var jspath = applicationPath + "/Scripts/webuploader/webuploader.min.js";
$.getScript(jspath).done(function () {
initWebUpload(ele, options);
})
.fail(function () {
alert("请检查webuploader的路径是否正确!")
});
}
else {
initWebUpload(ele, options);
}
}
})(jQuery, window);
因为有一些样式上的东西,所以还需要添加一部分CSS如下:
#container {
color: #838383;
font-size: 12px;
}
.uploaderPic .queueList {
margin: 20px;
border: 3px dashed #e6e6e6;
}
.uploaderPic .queueList.filled {
padding: 17px;
margin: 0;
border: 3px dashed transparent;
}
.uploaderPic .queueList.webuploader-dnd-over {
border: 3px dashed #999999;
}
.uploaderPic p {
margin: 0;
}
.element-invisible {
position: absolute !important;
clip: rect(1px 1px 1px 1px); /* IE6, IE7 */
clip: rect(1px,1px,1px,1px);
}
.uploaderPic .placeholder {
min-height: 350px;
padding-top: 178px;
text-align: center;
background: url(../images/image.png) center 93px no-repeat;
color: #cccccc;
font-size: 18px;
position: relative;
}
.uploaderPic .placeholder .webuploader-pick {
font-size: 18px;
background: #00b7ee;
border-radius: 3px;
line-height: 44px;
padding: 0 30px;
* 120px;
color: #fff;
display: inline-block;
margin: 0 auto 20px auto;
cursor: pointer;
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
.uploaderPic .placeholder .webuploader-pick-hover {
background: #00a2d4;
}
.uploaderPic .placeholder .flashTip {
color: #666666;
font-size: 12px;
position: absolute;
100%;
text-align: center;
bottom: 20px;
}
.uploaderPic .placeholder .flashTip a {
color: #0785d1;
text-decoration: none;
}
.uploaderPic .placeholder .flashTip a:hover {
text-decoration: underline;
}
.uploaderPic .filelist {
list-style: none;
margin: 0;
padding: 0;
}
.uploaderPic .filelist:after {
content: '';
display: block;
0;
height: 0;
overflow: hidden;
clear: both;
}
.uploaderPic .filelist li {
110px;
height: 110px;
background: url(../images/bg.png) no-repeat;
text-align: center;
margin: 0 8px 20px 0;
position: relative;
display: inline;
float: left;
overflow: hidden;
font-size: 12px;
}
.uploaderPic .filelist li p.log {
position: relative;
top: -45px;
}
.uploaderPic .filelist li p.title {
position: absolute;
top: 0;
left: 0;
100%;
overflow: hidden;
white-space: nowrap;
text-overflow: ellipsis;
top: 5px;
text-indent: 5px;
text-align: left;
}
.uploaderPic .filelist li p.progress {
position: absolute;
100%;
bottom: 0;
left: 0;
height: 8px;
overflow: hidden;
z-index: 50;
margin: 0;
border-radius: 0;
background: none;
-webkit-box-shadow: 0 0 0;
}
.uploaderPic .filelist li p.progress span {
display: none;
overflow: hidden;
0;
height: 100%;
background: #1483d8 url(../images/progress.png) repeat-x;
-webit-transition: width 200ms linear;
-moz-transition: width 200ms linear;
-o-transition: width 200ms linear;
-ms-transition: width 200ms linear;
transition: width 200ms linear;
-webkit-animation: progressmove 2s linear infinite;
-moz-animation: progressmove 2s linear infinite;
-o-animation: progressmove 2s linear infinite;
-ms-animation: progressmove 2s linear infinite;
animation: progressmove 2s linear infinite;
-webkit-transform: translateZ(0);
}
@@-webkit-keyframes progressmove {
0% {
background-position: 0 0;
}
100% {
background-position: 17px 0;
}
}
@@-moz-keyframes progressmove {
0% {
background-position: 0 0;
}
100% {
background-position: 17px 0;
}
}
@@keyframes progressmove {
0% {
background-position: 0 0;
}
100% {
background-position: 17px 0;
}
}
.uploaderPic .filelist li p.imgWrap {
position: relative;
z-index: 2;
line-height: 110px;
vertical-align: middle;
overflow: hidden;
110px;
height: 110px;
-webkit-transform-origin: 50% 50%;
-moz-transform-origin: 50% 50%;
-o-transform-origin: 50% 50%;
-ms-transform-origin: 50% 50%;
transform-origin: 50% 50%;
-webit-transition: 200ms ease-out;
-moz-transition: 200ms ease-out;
-o-transition: 200ms ease-out;
-ms-transition: 200ms ease-out;
transition: 200ms ease-out;
}
.uploaderPic .filelist li img {
100%;
}
.uploaderPic .filelist li p.error {
background: #f43838;
color: #fff;
position: absolute;
bottom: 0;
left: 0;
height: 28px;
line-height: 28px;
100%;
z-index: 100;
}
.uploaderPic .filelist li .success {
display: block;
position: absolute;
left: 0;
bottom: 0;
height: 40px;
100%;
z-index: 200;
background: url(../images/success.png) no-repeat right bottom;
}
.uploaderPic .filelist div.file-panel {
position: absolute;
height: 0;
filter: progid:DXImageTransform.Microsoft.gradient(GradientType=0,startColorstr='#80000000', endColorstr='#80000000') ;
background: rgba( 0, 0, 0, 0.5 );
100%;
top: 0;
left: 0;
overflow: hidden;
z-index: 300;
}
.uploaderPic .filelist div.file-panel span {
24px;
height: 24px;
display: inline;
float: right;
text-indent: -9999px;
overflow: hidden;
background: url(../images/icons.png) no-repeat;
margin: 5px 1px 1px;
cursor: pointer;
}
.uploaderPic .filelist div.file-panel span.rotateLeft {
background-position: 0 -24px;
}
.uploaderPic .filelist div.file-panel span.rotateLeft:hover {
background-position: 0 0;
}
.uploaderPic .filelist div.file-panel span.rotateRight {
background-position: -24px -24px;
}
.uploaderPic .filelist div.file-panel span.rotateRight:hover {
background-position: -24px 0;
}
.uploaderPic .filelist div.file-panel span.cancel {
background-position: -48px -24px;
}
.uploaderPic .filelist div.file-panel span.cancel:hover {
background-position: -48px 0;
}
.uploaderPic .statusBar {
height: 63px;
border-top: 1px solid #dadada;
padding: 0 20px;
line-height: 63px;
vertical-align: middle;
position: relative;
}
.uploaderPic .statusBar .progress {
border: 1px solid #1483d8;
198px;
background: #fff;
height: 18px;
position: relative;
display: inline-block;
text-align: center;
line-height: 20px;
color: #6dbfff;
position: relative;
margin: 0 10px 0 0;
}
.uploaderPic .statusBar .progress span.percentage {
0;
height: 100%;
left: 0;
top: 0;
background: #1483d8;
position: absolute;
}
.uploaderPic .statusBar .progress span.text {
position: relative;
z-index: 10;
}
.uploaderPic .statusBar .info {
display: inline-block;
font-size: 14px;
color: #666666;
}
.uploaderPic .statusBar .btns {
position: absolute;
top: 10px;
right: 20px;
line-height: 40px;
}
#filePicker2 {
display: inline-block;
float: left;
}
.uploaderPic .statusBar .btns .webuploader-pick,
.uploaderPic .statusBar .btns .uploadBtn,
.uploaderPic .statusBar .btns .uploadBtn.state-uploading,
.uploaderPic .statusBar .btns .uploadBtn.state-paused {
background: #ffffff;
border: 1px solid #cfcfcf;
color: #565656;
padding: 0 18px;
display: inline-block;
border-radius: 3px;
margin-left: 10px;
cursor: pointer;
font-size: 14px;
float: left;
}
.uploaderPic .statusBar .btns .webuploader-pick-hover,
.uploaderPic .statusBar .btns .uploadBtn:hover,
.uploaderPic .statusBar .btns .uploadBtn.state-uploading:hover,
.uploaderPic .statusBar .btns .uploadBtn.state-paused:hover {
background: #f0f0f0;
}
.uploaderPic .statusBar .btns .uploadBtn {
background: #00b7ee;
color: #fff;
border-color: transparent;
}
.uploaderPic .statusBar .btns .uploadBtn:hover {
background: #00a2d4;
}
.uploaderPic .statusBar .btns .uploadBtn.disabled {
pointer-events: none;
opacity: 0.6;
}
作者：顾振印 出处：http://www.cnblogs.com/GuZhenYin/ 如果您觉得阅读本文对您有帮助，请点一下“推荐”按钮，您的“推荐”将是我最大的写作动力！本文版权归作者和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面
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原文地址：https://www.cnblogs.com/jamescr7/p/8435482.html
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