无需调用Flash，从课程平台上传附件，不必为了传作业多装一个浏览器！
目前為
// ==UserScript==
// @name 免Flash文件上传
// @name:en Upload without Flash
// @namespace https://greasyfork.org/zh-CN/users/605474
// @version 1.0
// @description 无需调用Flash，从课程平台上传附件，不必为了传作业多装一个浏览器！
// @description:en No need to call Flash, upload accessories from the course platform, do not have to make multiple browsers for the homework!
// @author Ziu
// @match *://cc.bjtu.edu.cn:81/*
// @match *://cc.bjtu.edu.cn:81/meol/common/hw/student/write.jsp?hwtid=*
// @icon https://gitee.com/ziuc/utool-filebed/raw/master/20210514-231824-0795.png
// @require https://cdn.bootcdn.net/ajax/libs/jquery/3.6.0/jquery.min.js
// @require https://cdn.bootcdn.net/ajax/libs/jquery/1.7.2/jquery.min.js
// @grant none
// @license MIT
// ==/UserScript==
(function() {
'use strict';
let index = 0;
let oloaded = 0;
let ot = 0;
let orestTime = 0;
let frontTag = "<li><a id='add_button' title='上传作业' onclick=location='http://cc.bjtu.edu.cn:81/meol/common/hw/student/hwtask.jsp?tagbug=client&strStyle=new06'><span>上传作业</span></a></li>";
let uploadBox = '<tr><td><div style="font-size: 14px; width: 550px; margin:0 auto; margin-top: 10px;"><div id="inputDiv" title="点击选择文件上传" style="height: 200px; width: 560px; cursor:pointer; border: 3px dashed; border-radius:10px; border-color: #82b900; background: #c6f062;"><div id="inputArea"><div id="textShow" style="margin-top: 80px; font-size: 20px; color: #5c6b77; text-align: center;"><p>📁文件上传📄</p><p style="font-size: 15px">（文件最大上传1024M）</p></div><input id="currentFile" type="file" multiple="multiple" style="display:none;" </input></div></div><div id="filenames" style="margin-top: 5px; background-color: #e7e8e0;"></div><div id="buttonDiv" style="margin-top: 10px; text-align: center"></div></div></td></tr>'
let uploadBtn = '<a id="uploadTrigger" title="上传" style="cursor:pointer; padding-top: 2.5px; padding-bottom: 2.5px; padding-right: 5px; padding-left: 5px; background-color: #c6f062; border: 2px solid;">上传</a>  ';
let emptyBtn = '<a id="emptyTrigger" title="清空" style="cursor:pointer; padding-top: 2.5px; padding-bottom: 2.5px; padding-right: 5px; padding-left: 5px; background-color: #c6f062; border: 2px solid;">清空</a>';
// 外部DOM操作
$('#tmenu').append(frontTag);
$('.infotable>tbody>tr:contains("请输入你的答案")').after(uploadBox);
// 动效
$('#inputDiv').mouseenter(function (){$('#inputDiv').css('background-color','#87bd04');$('#textShow').css('color','#e7e8e0')});
$('#inputDiv').mouseleave(function (){$('#inputDiv').css('background-color','#c6f062');$('#textShow').css('color','#5c6b77')});
// 文件选择前事件监听
$('#inputDiv').click(function (){$('#currentFile').trigger('click');});
$('#currentFile').change(fileChangedByInput);
function fileChangedByInput(){
let filelist = $('#currentFile')[0].files;
// 缓存区展示
$('#inputDiv').hide(); // 隐藏上传框
$('#filenames, #buttonDiv').empty(); // 先清空 再插入
let sizeType = getSizeType(filelist);
for(let i=0;i<filelist.length;i++){
let item = {};
item.file = filelist[i];
item.sizeType = sizeType[i];
let fileObject = '<div class="fileObjects" id="fileTh'+i+'"style="cursor:default; margin-top: 10px; background-color: #e7e8e0;background-image: url(http://cc.bjtu.edu.cn:81/meol/styles/newstyle/course/new06/body_bg.jpg); background-repeat:no-repeat; background-size: 0%;"><a class="fileindex" id="fileindex'+i+'" title="[文件]" style="margin-left: 5px;">📄</a><a class="filename" title="'+item.file.name+'">  |  '+item.file.name+' ('+item.sizeType.size+item.sizeType.type+')'+'</a><a class="uploadSpeed" id="speedTh'+i+'" title="上传速度">  |  ⚡</a><a class="timeRemain" id="timeRemainTh'+i+'"></a></div>';
$('#filenames').append(fileObject);
}
// 文件选择后外部DOM插入
$('#buttonDiv').append(uploadBtn);
$('#buttonDiv').append(emptyBtn);
// 文件选择后事件监听
$('#emptyTrigger').click(function (){$('#currentFile').val('');$('#filenames, #buttonDiv').empty();$('#inputDiv').show();});
$('#uploadTrigger').click(function (){
$('.deleteTrigger').remove(); // 移除按钮动效
sendFileMsg();
function sendFileMsg(){
if(index >= filelist.length){
// 递归结束
$('#currentFile').val(''); // <input>文件清空
$('#uploadTrigger').css('cursor','not-allowed'); // 上传按钮动效
index = 0; // 递归条件置零
return // 结束递归
}
let formData = new FormData();
formData.append('Filename', filelist[index].name);
formData.append('Filedata', filelist[index]);
let xReq = new XMLHttpRequest();
xReq.open('POST','http://cc.bjtu.edu.cn:81/meol/servlet/SerUpload');
xReq.addEventListener("load", onSuccess);
xReq.addEventListener("error", onError);
// xReq.addEventListener("progress", onProgress);
xReq.upload.onprogress = onProgress;
xReq.upload.onloadstart = onStart;
xReq.send(formData);
function onProgress(evt){
// 进度计算
let percentage;
percentage = (evt.loaded * 100 / evt.total).toFixed(0);
// 速度计算
let nt = new Date().getTime(); // 获取当前时间
let perTime = (nt-ot)/1000; // 计算出上次调用该方法时到现在的时间差，单位为s
ot = new Date().getTime(); //重新赋值，用以下次计算
let perLoad = evt.loaded - oloaded; // 计算该分段上传的文件大小，单位b
oloaded = evt.loaded; // 重新赋值，用以下次计算
let speed = perLoad/perTime; // 单位 B/s
let bspeed = speed;
let Sunits = 'B/s';
if(speed/1024>1){
speed = speed/1024;
Sunits = 'KB/s'
}
if(speed/1024>1){
speed = speed/1024;
Sunits = 'MB/s';
}
speed = speed.toFixed(1);
// 时间计算 文件>100MB触发
if(evt.total>104857600){
let restTime = ((evt.total-evt.loaded)/bspeed).toFixed(0);
if(Math.abs(orestTime-restTime)<3){
// 缓动函数
restTime = orestTime
}
// 更新文件缓存区
$('#timeRemainTh'+index).html('  |  🕒'+restTime+'秒');
}
// 更新文件缓存区
$('#fileTh'+index).css('background-size',percentage+'%');
$('#speedTh'+index).html('  |  ⚡'+speed+Sunits);
}
function onStart(){
ot = new Date().getTime(); // 设置上传开始时间
oloaded = 0; // 设置上传开始时，以上传的文件大小为0
}
function onSuccess(){
// 插入编辑器操作
let myiframe = document.getElementsByTagName('iframe')[1].contentDocument;
let textArea = myiframe.getElementsByClassName('cke_show_borders');
let constructor = '<p><a data-cke-saved-href="/meol/'+this.responseText+'" href="/meol/'+this.responseText+'">'+filelist[index].name+'</a></p>'
$(textArea).append(constructor);
// 处理缓存区操作
$('#speedTh'+index).html('  |  ✅');
$('#speedTh'+index).attr('title','[已上传]');
$('#fileTh'+index).css('background','#c6f062');
// 递归操作
index++;
sendFileMsg();
// alert('上传成功');
}
function onError(){
alert('上传失败');
}
}
})
}
function getSizeType(filelist){
let sizeType = [];
for(let item of filelist){
let sizeTypeTMP = {};
if(item.size<1000000){
sizeTypeTMP.size = (item.size/1024).toFixed(2);
sizeTypeTMP.type = 'KB';
sizeType.push(sizeTypeTMP);
}
else if(item.size>1000000&&item.size<1000000000){
sizeTypeTMP.size = (item.size/1048576).toFixed(2);
sizeTypeTMP.type = 'MB';
sizeType.push(sizeTypeTMP);
}
}
return sizeType
}
})();