参见 http://blog.yuelong.info/post/cnki-pdf-js.html
// ==UserScript==
// @id CNKI-PDF
// @name CNKI 中国知网 PDF 全文下载
// @version 3.2.0.20170210
// @namespace http://yuelong.info
// @author YUE Long
// @description 参见 http://blog.yuelong.info/post/cnki-pdf-js.html
// @include http://*.cnki.net/*
// @include http://*.cnki.net.*/*
// @include */kns/brief/*
// @include */kns55/brief/*
// @include */grid2008/brief/*
// @include */detail/detail.aspx*
// @exclude http://image.cnki.net/*
// @run-at document-idle
// @grant none
// @supportURL http://blog.yuelong.info/post/cnki-pdf-js.html
// ==/UserScript==
var allLis, thisLi, newLi, aPDF, bPDF, allLinks, thisLink, pageType, pfType, myurl, i;
var pageType = true;
var pfType = true;
var myurl = window.location.href;
allLinks = document.evaluate(
'//a[@href]',
document,
null,
XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE,
null);
allLis = document.evaluate(
"//li[@class]",
document,
null,
XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE,
null);
if (myurl.indexOf("detail.aspx") != -1) {
pageType = false;
} //false 为详情页面
if (document.title.indexOf(" - 中国知网") != -1) {
pfType = false;
} //false 为新平台
if ((pfType === true) & (pageType === false)) {
for (var i = 0; i < allLis.snapshotLength; i++) {
thisLi = allLis.snapshotItem(i);
if (thisLi.getAttribute("class").indexOf("readol") != -1) {
newLi = document.createElement('li');
newLi.setAttribute("class", "pdf");
aPDF = '<a target="_blank" href="' + thisLi.firstChild.href.replace("&dflag=readonline", "&dflag=pdfdown") + '">PDF下载</a>';
newLi.innerHTML = aPDF;
thisLi.parentNode.insertBefore(newLi, thisLi.nextSibling);
}
}
}
if ((pfType === false) & (pageType === false)) {
for (var i = 0; i < allLinks.snapshotLength; i++) {
thisLink = allLinks.snapshotItem(i);
if (thisLink.href && thisLink.href.indexOf("download.aspx?filename=") != -1 && thisLink.innerHTML.indexOf("整本") != -1) {
thisLink.innerHTML = thisLink.innerHTML.replace("整本", "CAJ");
bPDF = thisLink.href;
}
if (thisLink.href && thisLink.href.indexOf("download.aspx?filename=") != -1 && thisLink.innerHTML.indexOf("分页") != -1) {
thisLink.innerHTML = thisLink.innerHTML.replace("分页", "PDF");
thisLink.href = bPDF.replace("nhdown", "pdfdown");
}
}
}
if (pageType === true) {
for (var i = 0; i < allLinks.snapshotLength; i++) {
thisLink = allLinks.snapshotItem(i);
if (thisLink.href && thisLink.href.indexOf("download.aspx?filename=") != -1 && thisLink.href.indexOf("&dflag") == -1) {
thisLink.href = thisLink.href + "&dflag=pdfdown";
}
if (thisLink.href && thisLink.href.indexOf("download.aspx?filename=") != -1 && thisLink.href.indexOf("&dflag=nhdown") != -1) {
thisLink.href = thisLink.href.replace("nhdown", "pdfdown");
}
}
}