知网下载助手
// ==UserScript==
// @name 知网下载助手
// @version 1.0
// @description 解析CNKI论文PDF格式下载地址，支持论文搜索、硕博论文、知网空间、在线阅读页面，默认替换原链接为pdf格式下载链接，支持导出目录，支持一键切换caj和pdf格式下载链接
// @author 执念e1
// @match https://www.cnki.net/
// @include */DefaultResult/Index*
// @include */KNS8/AdvSearch*
// @include */detail.aspx*
// @include */CatalogViewPage.aspx*
// @include */Article/*
// @connect cnki.net
// @run-at document-end
// @grant unsafeWindow
// @grant GM_xmlhttpRequest
// @grant GM_setClipboard
// @grant GM_registerMenuCommand
// @grant GM_unregisterMenuCommand
// @supportURL https://greasyfork.org/zh-CN/scripts/371938/feedback
// @license MIT
// ==/UserScript==
var $ = unsafeWindow.jQuery,
url = location.pathname,
i = 0, $btn;
if (!$ || !$('[class$=footer]:contains(中国知网)').length) {
} else if (url.match(/defaultresult\/index$/i) || url.match(/KNS8\/AdvSearch$/i)) {
$(document).ajaxSuccess(function() {
if (arguments[2].url.indexOf('/Brief/GetGridTableHtml') + 1) url = $('.downloadlink').attr('href', reUrl);
});
$btn = GM_registerMenuCommand('切换为CAJ下载链接', change);
} else if (url.match(/detail\.aspx$/) && location.search.match(/dbcode=C[DM][FM]D&/i)) {
url = $('a:contains(分章下载)').attr('href') || '?';
url = 'https://chn.oversea.cnki.net/kcms/download.aspx?dflag=catalog&' + url.match(/filename=.+?(&|$)/)[0];
GM_xmlhttpRequest({method: 'GET', url: url, onload: done});
url = $('.operate-btn a').attr('href', function() {
var tip = $(this).text().trim();
if (!tip.match(/^分[页章]下载$/)) return tip == '整本下载' ? reUrl.call(this) : this.href;
tip = this.href.replace(/kns8?(?!\/)/, 'gb.oversea');
if (tip == this.href) return $(this).attr('title', '此镜像网站不支持解析该PDF链接') && tip;
return $(this).data('CAJ', this.href).data('PDF', tip.replace(/&(.*?)cflag=\w*|$/, '&$1cflag=pdf')).data('PDF');
});
$btn = GM_registerMenuCommand('切换为CAJ下载链接', change);
} else if (url.match(/CatalogViewPage\.aspx$/)) {
$btn = $('#downLoadFile > span').contents().slice(0, 3);
$btn.eq(0).before($btn.clone()).attr('src', function() {
return this.src.replace('CAJ', 'PDF');
}).next().attr('href', reUrl).text('PDF全文下载');
} else if (url.match(/^\/Article\//)) {
$btn = $('#down_3').attr('id', 'down_1').find('#ty_caj');
$btn.clone().insertBefore($btn).attr('id', 'ty_pdf').find('a').attr('href', function() {
return this.href.replace('=caj&', '=pdf&');
}).text('PDF全文下载');
}
function reUrl() {
return $(this).data('CAJ', this.href).data('PDF', this.href.replace(/&(.*?)dflag=\w*|$/, '&$1dflag=pdfdown')).data(i % 2 ? 'CAJ' : 'PDF');
}
function change() {
var type = ++i % 2 ? ['CAJ', 'PDF'] : ['PDF', 'CAJ'];
url.attr('href', function() {
return $(this).data(type[0]) || this.href;
});
$('.rootw').prev().find('title').text(type[0] + '链接-中国知网');
GM_unregisterMenuCommand($btn);
$btn = GM_registerMenuCommand('切换为' + type[1] + '下载链接', change);
}
function done(xhr) {
var list = $('tr', xhr.responseText).map(function() {
var $dom = $(this).find('a, td:last');
return $dom.eq(0).html().trim().replace(/ /g, ' ') + '\t' + $dom.eq(1).text().trim().split('-')[0];
}).get().join('\r\n').replace(/ {4}/g, '\t'),
blob = new Blob([list]);
$('<li class="btn-dlpdf"><a href="javascript:void(0);">复制目录</a></li>').prependTo('.operate-btn').click(function() {
GM_setClipboard(list);
alert('目录已复制到剪贴板');
}).toggle(!!list);
$('<li class="btn-dlcaj"><a>下载目录</a></li>').prependTo('.operate-btn').toggle(!!list).children().each(function() {
this.download = $('.wx-tit h1').text().trim() + '_目录.txt';
this.href = URL.createObjectURL(blob);
}).css('margin-right', '3px');
}