duifene 对分易课程资源下载
// ==UserScript==
// @name duifene-download
// @version 0.1.1
// @description duifene 对分易课程资源下载
// @author WiSHao
// @match https://www.duifene.com/_FileManage/PC/StFileManage.aspx
// @icon https://www.duifene.com/favicon.ico
// @run-at document-body
// @license ISC
// @grant none
// @namespace https://greasyfork.org/users/1103837
// ==/UserScript==
(function () {
'use strict';
// 每100毫秒检查一次，确保要操作的元素真加载出来了，之后再执行某回调操作
function waitForElement(selector, callback) {
const interval = setInterval(function () {
const element = document.querySelector(selector);
if (element) {
clearInterval(interval);
callback(element);
}
}, 100);
}
// 下载函数
function download(url, name) {
fetch(url)
.then((response) => response.blob())
.then((blob) => {
const blobUrl = window.URL.createObjectURL(blob);
console.log(url.split('/'));
// 提取 URL 中的文件名
let filename = name || url.split('/').pop();
const a = document.createElement('a');
a.href = blobUrl;
a.download = filename;
document.body.appendChild(a);
a.click();
document.body.removeChild(a);
window.URL.revokeObjectURL(blobUrl); // 清理资源
})
.catch((e) => console.error('下载失败:', e));
}
// 改所有禁止下载为下载的函数
function todo(ele) {
if (ele) console.log('所检查元素存在，如下:', ele);
const fileListNode = document.querySelectorAll('#FilesList > div');
const fileListArray = Array.from(fileListNode);
let noDownloading = false;
fileListArray.forEach((item) => {
// 获取带下载功能那块的div
const actionDOM = item.querySelector('.action');
if (!actionDOM || !item.dataset.path) {
noDownloading = false;
return;
}
noDownloading = setDownLoadButton(actionDOM, item.dataset.path);
});
if (!noDownloading) {
alert('没有禁止下载，不用改啦');
return;
}
alert('确实有禁止下载，已解开');
}
function setDownLoadButton(actionDOM, downloadPath) {
// 遍历其中的所有元素
const elements = actionDOM.querySelectorAll('*');
for (let i = 0; i < elements.length; i++) {
let element = elements[i];
// 检查所有属性
for (let j = 0; j < element.attributes.length; j++) {
let attr = element.attributes[j];
if (attr.value.includes('禁止')) {
console.log(`找到属性包含'禁止'的元素`, element);
element.innerHTML = '草泥马我就要下载';
element.style.color = 'red';
element.style.cursor = 'pointer';
element.addEventListener('mouseenter', function () {
element.style.textDecoration = 'underline';
});
element.addEventListener('mouseleave', function () {
element.style.textDecoration = 'none';
});
element.addEventListener('click', () => download(downloadPath));
return true;
}
}
// 检查文本内容
if (element.textContent.includes('禁止')) {
console.log(`找到属性包含'禁止'的元素`, element);
element.innerHTML = '草泥马我就要下载';
element.style.color = 'red';
element.style.cursor = 'pointer';
element.addEventListener('mouseenter', function () {
element.style.textDecoration = 'underline';
});
element.addEventListener('mouseleave', function () {
element.style.textDecoration = 'none';
});
element.addEventListener('click', () => download(downloadPath));
return true;
}
}
return false;
}
// 批量下载函数
function autoDownload() {
try {
const fileListNode = document.querySelectorAll('#FilesList > div');
const fileListArray = Array.from(fileListNode);
if (fileListArray.length === 0) {
alert('没有可下载的文件');
return;
}
alert('开始批量下载文件');
fileListArray.forEach((item, index) => {
// 获取带下载功能那块的div
const actionDOM = item.querySelector('.action');
if (!actionDOM || !item.dataset.path) {
return;
}
setTimeout(() => {
console.log(`${index}号文件已开始下载`);
download(item.dataset.path);
}, index * 1000);
});
} catch (error) {
alert('批量下载出错', error);
}
}
// 点击重设所有下载的按钮
function setDownLoad(ele) {
ele.style.position = 'relative';
const btn = document.createElement('div');
btn.textContent = '设置下载按钮';
btn.style.width = '120px';
btn.style.height = '30px';
btn.style.borderRadius = '5px';
btn.style.lineHeight = '30px';
btn.style.textAlign = 'center';
btn.style.fontSize = '14px';
btn.style.fontWeight = 'bold';
btn.style.backgroundColor = '#8CF9FB';
btn.style.color = 'white';
btn.style.cursor = 'pointer';
btn.style.position = 'absolute';
btn.style.left = '200px';
btn.addEventListener('mouseenter', function () {
btn.style.backgroundColor = '#4BC4D0';
});
btn.addEventListener('mouseleave', function () {
btn.style.backgroundColor = '#8CF9FB';
});
ele.appendChild(btn);
btn.addEventListener('click', () => todo(ele));
}
// 批量下载按钮
function allDownLoad(ele) {
const btn = document.createElement('div');
btn.textContent = '批量下载文件';
btn.style.width = '120px';
btn.style.height = '30px';
btn.style.borderRadius = '5px';
btn.style.lineHeight = '30px';
btn.style.textAlign = 'center';
btn.style.fontSize = '14px';
btn.style.fontWeight = 'bold';
btn.style.backgroundColor = '#8CF9FB';
btn.style.color = 'white';
btn.style.cursor = 'pointer';
btn.style.position = 'absolute';
btn.style.left = '340px';
btn.addEventListener('mouseenter', function () {
btn.style.backgroundColor = '#4BC4D0';
});
btn.addEventListener('mouseleave', function () {
btn.style.backgroundColor = '#8CF9FB';
});
ele.appendChild(btn);
btn.addEventListener('click', autoDownload);
}
// 页面加载完毕后执行入口
window.addEventListener('load', () => {
waitForElement('.btnGroup', setDownLoad);
waitForElement('.btnGroup', allDownLoad);
waitForElement('#FilesList > div:nth-child(1) > div.fileName > a', todo);
});
})();