// ==UserScript==
// @name 中国知网CNKI硕博论文PDF下载
// @version 3.2.1
// @namespace https://greasyfork.org/users/244539
// @icon https://www.cnki.net/favicon.ico
// @description 知网文献、硕博论文PDF批量下载，下载硕博论文章节目录
// @author @爱与自由、@TheOneAdonis
// @match *://*.cnki.net/*
// @match 需要匹配的域名
// @run-at document-idle
// @grant unsafeWindow
// @grant GM_getValue
// @grant GM_setValue
// @grant GM_xmlhttpRequest
// @grant GM_download
// ==/UserScript==
// 如果没有显示批量下载的按钮，大概率是因为你的知网地址没有匹配到。
// 解决办法：将你的域名按照上面的 @match 的格式，添加到后面，保存脚本，刷新网页，应该就可以了。（最后要加个*）
// 例：// @match https://webvpn.zjnu.edu.cn/*
(function() {
'use strict';
let useWebVPN = GM_getValue('useWebVPN', false); // 默认不使用WebVPN
const $ = unsafeWindow.jQuery;
function loadCss(code) {
const style = document.createElement('style');
style.textContent = code;
document.head.appendChild(style);
}
function createLoading(text, duration) {
const loadingContent = document.createElement('div');
loadingContent.style.cssText = 'position:fixed;top:50%;left:50%;transform:translate(-50%, -50%);text-align:center;color:#333;font-size:16px;width:400px;height:40px;line-height:40px;z-index:9999;border:1px solid #0f5de5;padding:5px;background-color:#fff';
loadingContent.textContent = text;
document.body.appendChild(loadingContent);
setTimeout(() => document.body.removeChild(loadingContent), duration);
return loadingContent;
}
function createPopupButton() {
const popupButton = document.createElement('button');
popupButton.textContent = '批量下载PDF';
popupButton.id = 'super-pdf'
popupButton.style.cssText = 'position:fixed;right:50px;top:50%;transform:translateY(-50%);z-index:9999;padding:10px;background-color:#0f5de5;color:#fff;border:none;cursor:pointer;border-radius:5px;';
popupButton.addEventListener('click', () => {
if (!localStorage.getItem('cnkiFirstTimePopupShown')) {
showFirstTimePopup();
} else {
createPopup();
loadSavedData();
}
});
document.body.appendChild(popupButton);
}
function showFirstTimePopup() {
const popup = document.createElement('div');
popup.style.cssText = 'position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(0,0,0,0.5);z-index:10000;display:flex;justify-content:center;align-items:center;';
const content = document.createElement('div');
content.style.cssText = 'background-color:#fff;padding:20px;border-radius:10px;max-width:80%;max-height:80%;overflow-y:auto;';
content.innerHTML = `
<h2>使用说明 v3.2 </h2>
<p> </p>
<ul class="first_show_li">
<li><b>首先请确保脚本为最新版本，如果不是，请<a target="_blank" style="color:#df1919" href="https://greasyfork.org/zh-CN/scripts/389343">点击这里</a>进行更新。</b></li>
<li>1.脚本只能获取当前页的文献，知网默认每页20篇，如果想更多，可将每页数量设置为50。</li>
<li>2.如需清除已获取的数据 / 获取新数据，请先点击"<b>清除数据</b>"按钮。</li>
<li>3.<b>如果只能下载一个，可能是浏览器拦截，允许弹出多窗口即可。</b></li>
<li>4.脚本只支持<b>新版知网</b>，不能在<b>隐私模式、无痕窗口</b>运行。</li>
<li>5.增加了批量下载延迟(2-5秒)，增加了关键词筛选功能(文献关键词keywords)</li>
<li>6.如果有问题，或者脚本报错，请在脚本网站留言。</li>
<li><b>注意：请不要频繁获取数据，容易提示频繁操作。严重有封ip风险。</b></li>
</ul>
<button id="closeFirstTimePopup" style="padding:10px;background-color:#0f5de5;color:#fff;border:none;cursor:pointer;border-radius:5px;float:right">我知道了</button>`;
popup.appendChild(content);
document.body.appendChild(popup);
document.getElementById('closeFirstTimePopup').addEventListener('click', () => {
document.body.removeChild(popup);
localStorage.setItem('cnkiFirstTimePopupShown', 'true');
createPopup();
loadSavedData();
});
}
function createPopup() {
if (document.getElementById('popup')) return;
const popup = document.createElement('div');
popup.id = 'popup';
popup.style.cssText = 'position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(0,0,0,0.5);z-index:9999;';
const content = document.createElement('div');
content.style.cssText = 'position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);width:80%;max-height:80%;overflow-y:auto;background-color:#fff;padding:20px;border-radius:10px;box-shadow:0 0 10px rgba(0,0,0,0.5);min-height:200px';
const closeButton = createButton('关闭', () => document.body.removeChild(popup),'red');
closeButton.style.float = 'right';
const linkButton = createButton('获取链接', getLinks);
const selectAllButton = createButton('全选', selectAll);
const deselectAllButton = createButton('取消全选', deselectAll);
const downloadButton = createButton('下载', downloadSelected,'#008000');
downloadButton.title = "点击此处下载选中的文件";
downloadButton.id = "dl_sel";
const clearDataButton = createButton('清除数据', clearData,'#ff0000');
const webVPNToggle = createButton(useWebVPN ? '禁用WebVPN' : '启用WebVPN', toggleWebVPN);
webVPNToggle.id = 'webvpn-toggle';
const tips = createTips('关闭窗口数据不会消失，如需获取新数据，先点击清除数据，重新获取链接。 | 如果是远程登录的webvpn，获取出错可以尝试把webvpn开关打开。', '#0b1f64');
const tips2 = createTips('如果报错，请在脚本网站留言反馈。提供地址、控制台的截图（右键检查或审查元素，转到控制台）。', '#0b1f64');
const tips3 = document.createElement('div');
tips3.id = 'script_author';
tips3.innerHTML = '更新不易，希望大家关注我的公众号和视频频道，感谢支持~ 公众号：木星宝库 YouTube：<a target="_blank" href="https://www.youtube.com/channel/UCC1ExQh99BVTaPbGbGTcUzg/">点击这里</a> B站：<a target="_blank" href="https://space.bilibili.com/7241318">点击这里</a> ';
// 新增关键词筛选功能
const keywordFilterContainer = document.createElement('div');
keywordFilterContainer.style.cssText = 'display:flex;margin-bottom:10px;margin-top:5px;';
const keywordInput = document.createElement('input');
keywordInput.type = 'text';
keywordInput.placeholder = '输入关键词筛选(多个关键词用逗号分隔)';
keywordInput.style.cssText = 'flex-grow:1;padding:5px 5px 5px 8px;margin-right:10px;border:1px solid #eee;border-radius:3px;';
const filterButton = createButton('筛选', filterByKeywords, '#ff6600');
const resetFilterButton = createButton('重置', resetFilter, '#888');
keywordFilterContainer.append(keywordInput, filterButton, resetFilterButton);
content.append(closeButton, linkButton, selectAllButton, deselectAllButton, downloadButton, clearDataButton, webVPNToggle,tips, tips2, tips3, keywordFilterContainer);
const table = document.createElement('table');
table.id = 'my-table';
table.style.cssText = 'width:100%;margin-top:10px;border-collapse:collapse;';
table.innerHTML = '<thead><tr><th style="width:3%">多选</th><th style="width:3%">序号</th><th style="width:60%">名称</th><th style="width:7%">链接</th><th>关键词</th></tr></thead><tbody></tbody>';
content.appendChild(table);
popup.appendChild(content);
document.body.appendChild(popup);
// 加载保存的数据
loadSavedData();
// 获取关键词筛选输入框和按钮的引用
window.keywordInput = keywordInput;
}
function filterByKeywords() {
const keywords = window.keywordInput.value.split(/[,，]/).map(k => k.trim()).filter(Boolean);
if (keywords.length === 0) return;
const table = document.querySelector('#my-table tbody');
const rows = table.querySelectorAll('tr');
rows.forEach(row => {
const keywordsCell = row.querySelector('td:last-child');
const keywordText = keywordsCell.textContent.toLowerCase();
const shouldShow = keywords.some(keyword =>
keywordText.includes(keyword.toLowerCase())
);
row.style.display = shouldShow ? '' : 'none';
});
createLoading(`已筛选出包含关键词的论文`, 2000);
}
// 重置筛选
function resetFilter() {
const table = document.querySelector('#my-table tbody');
const rows = table.querySelectorAll('tr');
rows.forEach(row => {
row.style.display = '';
});
window.keywordInput.value = '';
createLoading(`已重置筛选`, 2000);
}
// 清除数据函数
function clearData() {
localStorage.removeItem('cnkiTableData');
const table = document.querySelector('#my-table tbody');
table.innerHTML = '';
updateSelectCount();
createLoading('数据已清除', 2000);
}
function createButton(text, onClick, color = '#0f5de5') {
const button = document.createElement('button');
button.textContent = text;
button.className = 'diy-btn';
button.style.color = color;
button.addEventListener('click', onClick);
return button;
}
function createTips(text, color) {
const tips = document.createElement('span');
tips.textContent = text;
tips.className = 'diy-span';
tips.style.color = color;
return tips;
}
function selectAll() {
document.querySelectorAll('.selectItem').forEach(item => item.checked = true);
updateSelectCount();
}
function deselectAll() {
document.querySelectorAll('.selectItem').forEach(item => item.checked = false);
updateSelectCount();
}
function delay(ms) {
return new Promise(resolve => setTimeout(resolve, ms));
}
async function downloadSelected() {
const selectedItems = document.querySelectorAll('.selectItem:checked');
if (selectedItems.length === 0) {
createLoading('请选择要下载的项目！', 2000);
return;
}
for (const item of selectedItems) {
const link = item.closest('tr').querySelector('a[href^="http"]');
if (link) {
// 打开链接
window.open(link.href, '_blank');
// 生成随机延迟时间：2-5秒（步长0.5秒）
const randomDelay = Math.floor(Math.random() * 7) * 500 + 2000;
console.log(`延迟 ${randomDelay / 1000} 秒后继续下载...`);
// 延迟下一次下载
await delay(randomDelay);
}
}
}
function updateSelectCount() {
const count = document.querySelectorAll('.selectItem:checked').length;
document.querySelector('#dl_sel').textContent = `下载 (${count})`;
}
// 查找包含“PDF下载”文字内容的链接并获取其链接地址
function findPDFDownloadLink(element, textContent) {
// 获取所有包含链接的 li 元素
var listItems = element.querySelectorAll('li');
// 遍历所有 li 元素，查找包含指定文本内容的链接
for (var i = 0; i < listItems.length; i++) {
var link = listItems[i].querySelector('a');
if (link && link.innerText.includes(textContent)) {
// 获取链接地址
var href = link.href;
console.log('链接地址:', href);
return href; // 返回找到的链接地址
}
}
console.log('未找到包含指定文字内容的链接');
return null; // 如果未找到匹配的链接，返回null
}
// 切换WebVPN的函数
function toggleWebVPN() {
useWebVPN = !useWebVPN;
GM_setValue('useWebVPN', useWebVPN);
const toggleButton = document.getElementById('webvpn-toggle');
if (toggleButton) {
toggleButton.textContent = useWebVPN ? '禁用WebVPN' : '启用WebVPN';
}
createLoading(`WebVPN ${useWebVPN ? '已启用' : '已禁用'}`, 2000);
}
function convertToWebVPNLink(originalLink) {
if (!useWebVPN) {
return originalLink;
}
const webVPNDomain = window.location.origin;
const path = originalLink.replace(/^(https?:\/\/)?(www\.)?[^\/]+/, '');
return `${webVPNDomain}${path}`;
}
async function getLinks() {
const table = document.querySelector('#my-table tbody');
if (table.children.length > 0) {
createLoading('已有数据！请先清除数据后再获取新链接。', 2000);
return;
}
const links = Array.from(document.querySelectorAll('.fz14')).map(link => {
const originalHref = link.href;
const webVPNHref = convertToWebVPNLink(originalHref);
console.log('Original link:', originalHref);
console.log('WebVPN link:', webVPNHref);
return webVPNHref;
});
const loading = createLoading('获取链接中（请耐心等待）……', 60000);
try {
console.log(links);
const batchSize = 5; // 每批处理的链接数
for (let i = 0; i < links.length; i += batchSize) {
const batch = links.slice(i, i + batchSize);
const responses = await Promise.all(batch.map(link =>
fetch(link, {
method: 'GET',
mode: 'same-origin',
referrerPolicy: 'unsafe-url',
}).then(response => response.text())
));
responses.forEach((html, index) => {
const doc = new DOMParser().parseFromString(html, 'text/html');
const h1Element = doc.querySelector('.wx-tit h1');
h1Element.querySelectorAll('span').forEach(element => element.remove());
const title = h1Element?.textContent.trim() || '无标题';
const author = Array.from(doc.querySelectorAll('.author')).map(a => a.textContent).join(' ');
const pdfLink = findPDFDownloadLink(doc.querySelector('.operate-btn'),'PDF下载');
const keywords = Array.from(doc.querySelectorAll('.keywords a')).map(keywords => `<span class="diy-btn" style="font-size:12px">${keywords.textContent.replace(";","")}</span>`).join('');
const row = table.insertRow();
row.innerHTML = `
<td style="text-align:center"><input type="checkbox" class="selectItem"></td>
<td style="text-align:center">${i + index + 1}</td>
<td><span class="diy_title">${title}</span><span class="diy_author">${author}</span></td>
<td style="text-align:center">${pdfLink !== null ? `<a href="${pdfLink}" target="_blank" class="diy-btn">PDF下载</a>` : '获取的链接为空，请检查!'}</td>
<td>${keywords}</td>
`;
row.querySelector('input[type="checkbox"]').addEventListener('change', updateSelectCount);
});
// 更新加载提示
loading.textContent = `正在获取链接...（${Math.min((i + batchSize) / links.length * 100, 100).toFixed(0)}%）`;
}
document.body.removeChild(loading);
createLoading('获取完毕！', 2000);
// 在获取完链接后保存数据
saveData();
} catch (error) {
console.error('Error fetching links:', error);
document.body.removeChild(loading);
createLoading(`获取链接出错：${error.message}\n links: ${links}`, 3000);
}
}
// 新增：保存数据到localStorage
function saveData() {
const tableRows = Array.from(document.querySelectorAll('#my-table tbody tr')).map(row => ({
title: row.querySelector('.diy_title').textContent,
author: row.querySelector('.diy_author').textContent,
pdfLink: row.querySelector('a[href^="http"]')?.href || '',
keywords: row.querySelector('td:last-child').innerHTML
}));
localStorage.setItem('cnkiTableData', JSON.stringify(tableRows));
}
// 新增：从localStorage加载数据
function loadSavedData() {
const savedData = localStorage.getItem('cnkiTableData');
if (savedData) {
const tableData = JSON.parse(savedData);
const table = document.querySelector('#my-table tbody');
table.innerHTML = ''; // 清空现有内容
tableData.forEach((item, index) => {
const row = table.insertRow();
row.innerHTML = `
<td style="text-align:center"><input type="checkbox" class="selectItem"></td>
<td style="text-align:center">${index + 1}</td>
<td><span class="diy_title">${item.title}</span><span class="diy_author">${item.author}</span></td>
<td style="text-align:center">${item.pdfLink ? `<a href="${item.pdfLink}" target="_blank" class="diy-btn">PDF下载</a>` : '获取链接失败!'}</td>
<td>${item.keywords}</td>
`;
row.querySelector('input[type="checkbox"]').addEventListener('change', updateSelectCount);
});
updateSelectCount();
}
}
// 目录下载功能
function addCategoryDownloadButton() {
const otherBtns = document.querySelector('.other-btns');
if (!otherBtns) return;
const li = document.createElement('li');
li.className = 'btn-diy';
li.style.cssText = 'width:auto;height:23px;line-height:22px;background-color:#3f8af0;border-radius:3px;';
const a = document.createElement('a');
a.textContent = '目录下载';
a.className = 'a-diy';
a.style.cssText = 'color:#ffffff;padding:2px 10px;';
a.href = 'javascript:void(0)';
a.addEventListener('click', downloadCategory);
li.appendChild(a);
otherBtns.appendChild(li);
}
async function downloadCategory() {
const hrefLink = findPDFDownloadLink(document.querySelector('.operate-btn'),'章节下载');
console.log("目录链接：" + hrefLink);
if (!hrefLink) {
createLoading('无法获取目录链接', 2000);
return;
}
try {
const response = await fetch(hrefLink);
const html = await response.text();
const doc = new DOMParser().parseFromString(html, 'text/html');
const title = document.querySelector('.wx-tit h1')?.textContent.trim() || '未知标题';
const chapters = Array.from(doc.querySelectorAll('.ls-chapters li'))
.map(chapter => chapter.textContent.trim())
.filter(Boolean)
.map(text => {
const parts = text.split('-');
return `${parts[0].replace(/\n/g, '\t')} \n`;
})
.join('');
console.log(chapters);
saveFile(title, chapters);
} catch (error) {
console.error('Error downloading category:', error);
createLoading('下载目录失败', 2000);
}
}
function saveFile(name, data) {
const blob = new Blob([data], { type: 'text/plain' });
const link = document.createElement('a');
link.href = URL.createObjectURL(blob);
link.download = `${name}.txt`;
link.click();
URL.revokeObjectURL(link.href);
}
// 初始化函数
function init() {
const url = window.location.href.toLowerCase();
console.log(url);
// 在所有页面上添加批量下载按钮
// createPopupButton();
// 如果不显示按钮，将下面三行注释，取消上一行的代码注释。
if (url.includes('defaultresult') || url.includes('advsearch') || url.includes('search')) {
createPopupButton();
}
// 在文献详情页面添加目录下载按钮
if (url.includes('abstract')) {
addCategoryDownloadButton();
}
// 加载自定义CSS
loadCss(`
.diy-btn {
display: inline-block;
vertical-align: middle;
padding: 2px 8px;
line-height: 18px;
color: #0f5de5;
font-size: 14px;
text-align: center;
background-color: #e3ecfd;
border: 1px solid #fff;
cursor: pointer;
}
.diy-span {
display: inline-block;
vertical-align: middle;
padding: 2px 8px;
line-height: 18px;
color: #0f5de5;
font-size: 12px;
text-align: center;
}
#popup table tr td,
#popup table tr th {
line-height: 20px;
height: 20px;
padding: 5px;
border: 1px solid #eee;
}
.diy_title {
display: block;
color: #524d4d;
font-size: 14px;
font-weight: bold;
}
.diy_author {
color: #666;
}
.font-size-button {
font-size: 14px;
display: block;
line-height: 18px;
border: 1px solid #e2e2e2;
border-radius: 2px;
background-color: #f5f5f5;
color: #504f4f;
float: left;
padding: 3px;
position: absolute;
right: 0;
width: 28px;
cursor: pointer;
}
#script_author {
color: rgb(14 93 228);
display: block;
background-color: #e3ecfd;
margin-top: 5px;
text-align: center;
padding: 4px;
}
.first_show_li li{
line-height:30px;
}
`);
}
// 在页面加载完成后运行初始化函数
// 在页面加载完成后运行初始化函数
window.addEventListener('load', init);
})();
