// ==UserScript== // @name WHUT教学平台UMOOC PDF下载器 // @name:en WHUT JXPT PDF Downloader // @namespace http://tampermonkey.net/ // @version 1.0 // @description 【正式版】一款专为武汉理工大学教学平台(jxpt.whut.edu.cn)设计的PDF下载助手。拥有现代化UI、全自动后台扫描、智能识别页面类型、精准解析真实下载地址、支持批量下载和自由拖拽等特性，提供极致的用户体验。 // @description:en [Official Release] A PDF download helper for WHUT's teaching platform (jxpt.whut.edu.cn). Features a modern UI, automatic background scanning, smart page type detection, accurate real URL parsing, batch download support, and a draggable button for the ultimate user experience. // @author 毫厘 // @match https://jxpt.whut.edu.cn/* // @icon https://www.google.com/s2/favicons?sz=64&domain=whut.edu.cn // @grant none // @license MIT // ==/UserScript== (function() { 'use strict'; let isInitialized = false; let scanningInProgress = false; let cachedFiles = []; let isDragging = false; let dragOffset = { x: 0, y: 0 }; // 防抖函数，避免重复初始化 function debounce(func, wait) { let timeout; return function executedFunction(...args) { const later = () => { clearTimeout(timeout); func(...args); }; clearTimeout(timeout); timeout = setTimeout(later, wait); }; } // 优化的监控逻辑 const checkAndInit = debounce(() => { try { const mainFrame = document.querySelector('frame[name="mainFrame"]'); if (!mainFrame || isInitialized) return; const doc = mainFrame.contentDocument; if (!doc || !doc.body || doc.getElementById('pdf-floating-btn')) return; isInitialized = true; initializeModernDownloader(mainFrame); } catch (error) { // Silently handle cross-origin errors } }, 500); setInterval(checkAndInit, 2000); /** * 现代化UI和智能扫描系统 */ async function initializeModernDownloader(frame) { const doc = frame.contentDocument; // 1. 注入现代化CSS样式 injectModernStyles(doc); // 2. 创建现代化UI组件 createModernUI(doc); // 3. 绑定交互事件 bindUIEvents(doc, frame); // 4. 启动智能扫描 await performIntelligentScan(frame, doc); } function injectModernStyles(doc) { const style = doc.createElement('style'); style.textContent = ` /* 主按钮 - 现代化设计，自由拖拽 */ #pdf-floating-btn { position: fixed; top: 30px; right: 30px; z-index: 10000; width: 60px; height: 60px; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; border: none; border-radius: 50%; cursor: grab; font-size: 28px; box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3); transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); display: flex; align-items: center; justify-content: center; user-select: none; backdrop-filter: blur(10px); border: 2px solid rgba(255, 255, 255, 0.1); } #pdf-floating-btn:hover { transform: scale(1.05); box-shadow: 0 8px 25px rgba(102, 126, 234, 0.5); background: linear-gradient(135deg, #7c8ef7 0%, #8a5fb8 100%); } #pdf-floating-btn.dragging { cursor: grabbing; transform: scale(1.1); box-shadow: 0 10px 30px rgba(102, 126, 234, 0.7); transition: none; z-index: 10001; } #pdf-floating-btn.scanning { animation: pulse 2s infinite; } @keyframes pulse { 0% { box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3); } 50% { box-shadow: 0 8px 30px rgba(102, 126, 234, 0.6); } 100% { box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3); } } /* 计数标记 - 优化位置和样式 */ #pdf-count-badge { position: absolute; top: -5px; right: -5px; background: linear-gradient(135deg, #ff4757 0%, #ff3838 100%); color: white; border-radius: 50%; min-width: 22px; height: 22px; font-size: 11px; font-weight: bold; display: flex; align-items: center; justify-content: center; transform: scale(0); transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55); pointer-events: none; border: 2px solid white; box-shadow: 0 2px 8px rgba(255, 71, 87, 0.4); } #pdf-count-badge.show { transform: scale(1); } /* 侧边栏 - 重新设计布局 */ #pdf-modern-sidebar { position: fixed; top: 0; right: -450px; width: 420px; height: 100vh; z-index: 9999; background: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%); box-shadow: -8px 0 40px rgba(0, 0, 0, 0.12); transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94); display: flex; flex-direction: column; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; border-left: 1px solid rgba(226, 232, 240, 0.8); } #pdf-modern-sidebar.visible { transform: translateX(-450px); } /* 遮罩层 */ #pdf-overlay { display: none; position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background: rgba(15, 23, 42, 0.5); z-index: 9998; backdrop-filter: blur(4px); transition: opacity 0.3s ease; } #pdf-modern-sidebar.visible + #pdf-overlay { display: block; } /* 头部区域 - 重新设计 */ .pdf-header { padding: 28px 24px 24px; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; position: relative; border-bottom: 1px solid rgba(255, 255, 255, 0.1); } .pdf-header::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: radial-gradient(circle at 30% 20%, rgba(255,255,255,0.1) 0%, transparent 50%); } .pdf-header h2 { margin: 0 0 8px 0; font-size: 22px; font-weight: 700; position: relative; letter-spacing: -0.5px; } .pdf-status { font-size: 14px; opacity: 0.95; position: relative; font-weight: 500; } .pdf-close-btn { position: absolute; top: 24px; right: 24px; background: rgba(255, 255, 255, 0.15); border: none; color: white; width: 36px; height: 36px; border-radius: 50%; cursor: pointer; font-size: 20px; transition: all 0.3s; display: flex; align-items: center; justify-content: center; backdrop-filter: blur(10px); } .pdf-close-btn:hover { background: rgba(255, 255, 255, 0.25); transform: rotate(90deg); } /* 进度条区域 - 更清晰的视觉层次 */ .pdf-progress { background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%); color: #92400e; padding: 16px 24px; font-size: 14px; border-left: 4px solid #f59e0b; margin: 0; font-weight: 500; display: flex; align-items: center; border-bottom: 1px solid rgba(245, 158, 11, 0.2); } /* 内容区域 - 优化滚动和间距 */ .pdf-content { flex: 1; overflow-y: auto; padding: 0; background: #fafbfc; } .pdf-content::-webkit-scrollbar { width: 6px; } .pdf-content::-webkit-scrollbar-track { background: transparent; } .pdf-content::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; } .pdf-content::-webkit-scrollbar-thumb:hover { background: #94a3b8; } /* 文件列表 - 更好的视觉组织 */ .pdf-file-list { list-style: none; margin: 0; padding: 16px 0; } .pdf-file-item { display: flex; align-items: center; padding: 18px 24px; margin: 0 16px 12px; background: white; border-radius: 12px; box-shadow: 0 2px 8px rgba(15, 23, 42, 0.08); transition: all 0.3s; border: 1px solid rgba(226, 232, 240, 0.6); } .pdf-file-item:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(15, 23, 42, 0.12); border-color: rgba(102, 126, 234, 0.3); } .pdf-file-icon { width: 44px; height: 44px; background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: white; font-weight: bold; font-size: 12px; margin-right: 16px; flex-shrink: 0; box-shadow: 0 4px 12px rgba(239, 68, 68, 0.25); } .pdf-file-info { flex: 1; min-width: 0; margin-right: 12px; } .pdf-file-name { font-weight: 600; color: #1e293b; margin-bottom: 6px; font-size: 14px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; } .pdf-file-size { font-size: 12px; color: #64748b; font-weight: 500; } .pdf-download-single { background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%); color: white; border: none; padding: 10px 18px; border-radius: 8px; font-size: 12px; font-weight: 600; cursor: pointer; transition: all 0.3s; box-shadow: 0 3px 10px rgba(59, 130, 246, 0.3); min-width: 70px; display: flex; align-items: center; justify-content: center; } .pdf-download-single:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 6px 16px rgba(59, 130, 246, 0.4); background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%); } .pdf-download-single:disabled { background: #94a3b8; cursor: not-allowed; transform: none; box-shadow: none; } /* 操作按钮区域 - 更突出的CTA */ .pdf-actions { padding: 24px; background: white; border-top: 1px solid #e2e8f0; box-shadow: 0 -4px 20px rgba(15, 23, 42, 0.05); } .pdf-download-all { width: 100%; padding: 16px; background: linear-gradient(135deg, #10b981 0%, #059669 100%); color: white; border: none; border-radius: 12px; font-size: 16px; font-weight: 700; cursor: pointer; transition: all 0.3s; box-shadow: 0 4px 16px rgba(16, 185, 129, 0.3); letter-spacing: 0.5px; text-transform: uppercase; position: relative; overflow: hidden; } .pdf-download-all::before { content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 100%; background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent); transition: left 0.5s; } .pdf-download-all:hover:not(:disabled)::before { left: 100%; } .pdf-download-all:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(16, 185, 129, 0.4); background: linear-gradient(135deg, #059669 0%, #047857 100%); } .pdf-download-all:disabled { background: linear-gradient(135deg, #94a3b8 0%, #64748b 100%); cursor: not-allowed; transform: none; box-shadow: none; } /* 加载状态 */ .loading-spinner { display: inline-block; width: 16px; height: 16px; border: 2px solid rgba(255, 255, 255, 0.3); border-radius: 50%; border-top-color: #ffffff; animation: spin 1s ease-in-out infinite; margin-right: 8px; } @keyframes spin { to { transform: rotate(360deg); } } /* 空状态 - 更友好的设计 */ .pdf-empty-state { text-align: center; padding: 60px 24px; color: #64748b; } .pdf-empty-icon { font-size: 64px; margin-bottom: 20px; opacity: 0.6; filter: grayscale(0.3); } .pdf-empty-text { font-size: 16px; font-weight: 500; margin-bottom: 8px; color: #475569; } .pdf-empty-hint { font-size: 14px; color: #94a3b8; line-height: 1.5; } /* 响应式适配 */ @media (max-width: 480px) { #pdf-modern-sidebar { width: 100vw; right: -100vw; } #pdf-modern-sidebar.visible { transform: translateX(-100vw); } .pdf-file-item { margin: 0 8px 8px; padding: 14px 16px; } .pdf-header { padding: 20px 16px 16px; } .pdf-actions { padding: 16px; } } `; doc.head.appendChild(style); } function createModernUI(doc) { // 主浮动按钮 const floatingBtn = doc.createElement('button'); floatingBtn.id = 'pdf-floating-btn'; floatingBtn.innerHTML = '📄'; floatingBtn.className = 'scanning'; floatingBtn.title = '点击打开PDF下载器，拖拽可移动位置'; doc.body.appendChild(floatingBtn); // 计数标记 const countBadge = doc.createElement('div'); countBadge.id = 'pdf-count-badge'; countBadge.textContent = '0'; floatingBtn.appendChild(countBadge); // 侧边栏 const sidebar = doc.createElement('div'); sidebar.id = 'pdf-modern-sidebar'; sidebar.innerHTML = `

📄 PDF 文档中心

正在扫描...

`; doc.body.appendChild(sidebar); // 遮罩层 const overlay = doc.createElement('div'); overlay.id = 'pdf-overlay'; doc.body.appendChild(overlay); } function bindUIEvents(doc, frame) { const floatingBtn = doc.getElementById('pdf-floating-btn'); const sidebar = doc.getElementById('pdf-modern-sidebar'); const overlay = doc.getElementById('pdf-overlay'); const closeBtn = doc.getElementById('pdf-close-btn'); const downloadAllBtn = doc.getElementById('pdf-download-all'); const fileList = doc.getElementById('pdf-file-list'); // 简化的拖拽功能 - 移除吸附逻辑 let clickStartTime = 0; let hasMoved = false; function getEventPos(e) { return { x: e.type.includes('touch') ? e.touches[0].clientX : e.clientX, y: e.type.includes('touch') ? e.touches[0].clientY : e.clientY }; } function startDrag(e) { clickStartTime = Date.now(); hasMoved = false; isDragging = true; const pos = getEventPos(e); const rect = floatingBtn.getBoundingClientRect(); dragOffset.x = pos.x - rect.left; dragOffset.y = pos.y - rect.top; floatingBtn.classList.add('dragging'); e.preventDefault(); } function doDrag(e) { if (!isDragging) return; hasMoved = true; const pos = getEventPos(e); let newX = pos.x - dragOffset.x; let newY = pos.y - dragOffset.y; // 边界限制 const margin = 10; const maxX = window.innerWidth - floatingBtn.offsetWidth - margin; const maxY = window.innerHeight - floatingBtn.offsetHeight - margin; newX = Math.max(margin, Math.min(newX, maxX)); newY = Math.max(margin, Math.min(newY, maxY)); floatingBtn.style.left = newX + 'px'; floatingBtn.style.top = newY + 'px'; floatingBtn.style.right = 'auto'; floatingBtn.style.bottom = 'auto'; e.preventDefault(); } function endDrag(e) { if (!isDragging) return; isDragging = false; floatingBtn.classList.remove('dragging'); // 如果是点击而非拖拽，则打开侧边栏 const clickDuration = Date.now() - clickStartTime; if (!hasMoved && clickDuration < 300) { sidebar.classList.toggle('visible'); } } // 事件绑定 floatingBtn.addEventListener('mousedown', startDrag); doc.addEventListener('mousemove', doDrag); doc.addEventListener('mouseup', endDrag); floatingBtn.addEventListener('touchstart', startDrag, { passive: false }); doc.addEventListener('touchmove', doDrag, { passive: false }); doc.addEventListener('touchend', endDrag, { passive: false }); floatingBtn.addEventListener('contextmenu', e => e.preventDefault()); // 关闭侧边栏 [overlay, closeBtn].forEach(el => { el.addEventListener('click', () => { sidebar.classList.remove('visible'); }); }); // 全部下载 downloadAllBtn.addEventListener('click', async (e) => { if (cachedFiles.length === 0) return; e.target.innerHTML = '正在下载...'; e.target.disabled = true; await downloadFiles(doc, cachedFiles); setTimeout(() => { e.target.textContent = '下载全部文档'; e.target.disabled = false; }, 3000); }); // 单个文件下载 fileList.addEventListener('click', async (e) => { if (e.target.classList.contains('pdf-download-single')) { const index = parseInt(e.target.dataset.index); const file = cachedFiles[index]; if (file) { e.target.innerHTML = ''; e.target.disabled = true; await downloadFiles(doc, [file]); setTimeout(() => { e.target.textContent = '下载'; e.target.disabled = false; }, 2000); } } }); } async function performIntelligentScan(frame, doc) { if (scanningInProgress) return; scanningInProgress = true; updateScanStatus(doc, '正在扫描...', true); try { const files = await optimizedUnifiedScraper(frame, doc); cachedFiles = files; updateUI(doc, files); updateScanStatus(doc, `找到 ${files.length} 个文档`, false); } catch (error) { console.error('扫描失败:', error); updateScanStatus(doc, '扫描失败', false); } finally { scanningInProgress = false; doc.getElementById('pdf-floating-btn').classList.remove('scanning'); } } function updateScanStatus(doc, message, showProgress) { const statusEl = doc.getElementById('pdf-status'); const progressEl = doc.getElementById('pdf-progress'); const progressText = doc.getElementById('progress-text'); if (statusEl) statusEl.textContent = message; if (progressText) progressText.textContent = message; if (progressEl) progressEl.style.display = showProgress ? 'block' : 'none'; } function updateUI(doc, files) { const countBadge = doc.getElementById('pdf-count-badge'); const fileList = doc.getElementById('pdf-file-list'); const downloadAllBtn = doc.getElementById('pdf-download-all'); // 更新计数标记 countBadge.textContent = files.length > 99 ? '99+' : files.length; countBadge.className = files.length > 0 ? 'show' : ''; // 更新文件列表 if (files.length === 0) { fileList.innerHTML = `

📄

暂无PDF文档

当前页面没有找到可下载的PDF文档
请尝试切换到其他页面或等待内容加载

`; } else { fileList.innerHTML = files.map((file, index) => `

PDF

${file.fileName}

PDF文档 • 点击下载

`).join(''); } // 更新下载按钮状态 downloadAllBtn.disabled = files.length === 0; if (files.length > 0) { downloadAllBtn.innerHTML = `📥 下载全部文档 (${files.length})`; } else { downloadAllBtn.textContent = '📥 暂无可下载文档'; } } // 优化的扫描器 async function optimizedUnifiedScraper(frame, doc) { const collectedPdfs = new Map(); let usingPagination = false; let pageNum = 1; const maxPages = 10; // 限制最大页数防止无限循环 updateScanStatus(doc, '扫描当前页面...', true); // 扫描分页 while (pageNum <= maxPages) { const currentDoc = frame.contentDocument; findPdfsOnCurrentPage(currentDoc, collectedPdfs); const nextPageLink = findNextPageLink(currentDoc); if (nextPageLink && pageNum < maxPages) { usingPagination = true; updateScanStatus(doc, `扫描第 ${pageNum + 1} 页...`, true); await navigateAndAwaitLoad(frame, nextPageLink); pageNum++; // 小延迟确保页面加载完成 await new Promise(r => setTimeout(r, 800)); } else { break; } } // 如果没有分页，尝试滚动加载 if (!usingPagination) { updateScanStatus(doc, '扫描动态内容...', true); await performScrollScan(frame, collectedPdfs, doc); } return Array.from(collectedPdfs.values()); } async function performScrollScan(frame, collectedPdfs, doc) { let lastSize = -1; let scrollAttempts = 0; const maxScrollAttempts = 5; while (collectedPdfs.size > lastSize && scrollAttempts < maxScrollAttempts) { lastSize = collectedPdfs.size; const scrollElement = frame.contentDocument.scrollingElement || frame.contentDocument.documentElement; scrollElement.scrollTop = scrollElement.scrollHeight; updateScanStatus(doc, `滚动扫描... 已找到 ${collectedPdfs.size} 个文档`, true); await new Promise(r => setTimeout(r, 1200)); findPdfsOnCurrentPage(frame.contentDocument, collectedPdfs); scrollAttempts++; } } function findPdfsOnCurrentPage(doc, collection) { const links = doc.querySelectorAll('a[href*="download_preview.jsp"]'); links.forEach(link => { let realDownloadHref = ''; try { const url = new URL(link.href); const resId = url.searchParams.get('resid'); const lid = url.searchParams.get('lid'); if (resId && lid) { realDownloadHref = `${url.protocol}//${url.host}/meol/analytics/resPdfShow.do?resId=${resId}&lid=${lid}`; } else { return; } } catch (e) { console.error("解析链接失败:", link.href, e); return; } const fromText = link.textContent.trim(); const fromTitle = link.title.trim(); let fileName = fromText || fromTitle; if (fileName && !fileName.toLowerCase().endsWith('.pdf')) { fileName += '.pdf'; } if (!fileName) { fileName = (new URL(link.href).searchParams.get('resid') || 'unnamed') + '.pdf'; } if (realDownloadHref && !collection.has(realDownloadHref)) { collection.set(realDownloadHref, { href: realDownloadHref, fileName: fileName }); } }); } // -- 其他辅助函数 -- function findNextPageLink(doc) { const t = ['下一页', 'Next', '›', '>']; const a = doc.querySelectorAll('a'); for (const l of a) { if (t.includes(l.innerText.trim())) return l; } const i = doc.querySelector('img[alt="下一页"], img[title="下一页"]'); return i ? i.closest('a') : null; } function navigateAndAwaitLoad(frame, target) { return new Promise(r => { const h = () => { frame.removeEventListener('load', h); r(); }; frame.addEventListener('load', h); target.click(); }); } async function downloadFiles(doc, files) { for (const file of files) { try { const a = doc.createElement('a'); a.href = file.href; a.download = file.fileName; doc.body.appendChild(a); a.click(); doc.body.removeChild(a); } catch (e) { console.error(`下载 ${file.fileName} 时失败:`, e); } await new Promise(resolve => setTimeout(resolve, 600)); } } })();