// ==UserScript==// @name         电百网PDF在线下载// @namespace    https://userscript.snomiao.com/// @version      v2020.08.14// @description  [电百网PDF在线下载] 注：本脚本仅是一个操作指导，并没有自动实现具体功能。脚本仅供学习研究计算机技术使用，严禁用于非法行为。// @author       [email protected]// @match        https://www.ceppedu.com/home/pdf-preview-web/*// @grant        none// ==/UserScript==//// Copyright © 2020 snomiao 转载请注明出处//console.log("[电百网PDF在线下载] 注：本脚本仅是一个操作指导，并没有自动实现具体功能。脚本仅供学习研究计算机技术使用，严禁用于非法行为。");() => {```打开开发者工具点 Source找到 UIExtension.full.****.js搜索 ZoomInAndOutController在后面的 handle 函数内部，配置 断点点一下缩小的放大镜，此时将停在断点处打开控制台，执行下面的代码```;_this = this;```然后点继续执行（离开断点）然后执行下面代码，即可下载到 pdf 文件```;function createAndDownloadBlobFile(arrayBuffers,filename,extension = "pdf") {const blob = new Blob(arrayBuffers);const fileName = `${filename}.${extension}`;if (navigator.msSaveBlob) {// IE 10+navigator.msSaveBlob(blob, fileName);} else {const link = document.createElement("a");// Browsers that support HTML5 download attributeif (link.download !== undefined) {const url = URL.createObjectURL(blob);link.setAttribute("href", url);link.setAttribute("download", fileName);link.style.visibility = "hidden";document.body.appendChild(link);link.click();document.body.removeChild(link);}}}var o = (function () {return function (t, e) {if (Array.isArray(t)) return t;if (Symbol.iterator in Object(t))return (function (t, e) {var n = [],o = !0,r = !1,i = void 0;try {for (var a, s = t[Symbol.iterator]();!(o = (a = s.next()).done) &&(n.push(a.value), !e || n.length !== e);o = !0);} catch (t) {(r = !0), (i = t);} finally {try {!o && s.return && s.return();} finally {if (r) throw i;}}return n;})(t, e);throw new TypeError("Invalid attempt to destructure non-iterable instance");};})();Object.entries(window).map((e) => e[1].getPDFUI);_this.getPDFUI().getPDFViewer().then(function (t) {var e = [];return t.currentPDFDoc.getStream(function (t) {var n = t.arrayBuffer;e.push(n);}).then(function (n) {return [e, t.currentPDFDoc.getFileName()];});}).then(function (e) {var n = o(e, 2);createAndDownloadBlobFile(n[0], n[1]);});};