Readme
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// ==UserScript==
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// @name 央视网视频下载
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// @description Download videos from cctv.com with one click
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// @namespace https://iteay.top/
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// @version 1.0
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// @author BlackTeay
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// @match https://*.cctv.com/*
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// @updateURL https://git.jlntv.work/blackteay/tampermonkey-script/raw/branch/master/Download_CCTV_Video.js
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// @downloadURL https://git.jlntv.work/blackteay/tampermonkey-script/raw/branch/master/Download_CCTV_Video.js
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// @require http://libs.baidu.com/jquery/2.0.0/jquery.min.js
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// @grant GM_xmlhttpRequest
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// @grant GM_openInTab
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// @license MIT
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// ==/UserScript==
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(function () {
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function findVideoEle(src) {
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let videoJQ = $("#video");
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// 向视频旁边添加【下载】按钮
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appendDownloadEle(videoJQ, src);
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}
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/**
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* 向视频上边添加【下载】按钮
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*/
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function appendDownloadEle(videoJQ, videoSrc) {
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let downloadIdAttrName = videoJQ.attr("id") + "_download";
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console.log(downloadIdAttrName)
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if ($("#" + downloadIdAttrName).length <= 0) {
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// 【下载】按钮
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let downloadJQ = $("<a>下载视频</a>");
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downloadJQ.css({
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'background-color': 'rgba(255,130,0, 1)',
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"color": "#fff",
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'font-size': '15px',
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'cursor': 'pointer',
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"border-radius": "5px",
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"padding": "5px 10px",
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"display":"inline-block",
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"margin-top":"1rem",
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"margin-left":"0.5rem"
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});
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downloadJQ.attr("id", downloadIdAttrName);
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downloadJQ.attr("href", videoSrc);
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downloadJQ.attr("target", "_balnk");
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downloadJQ.attr("download","true")
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videoJQ.parent().after(downloadJQ);
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// console.log(videoJQ.attr("id") +" 添加下载按钮：" + downloadIdAttrName +", src=" + videoJQ.attr("src"));
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// 为下载按钮绑定单击事件下载视频
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downloadJQ.on("click", function (event) {
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// console.log("下载视频：" + $(this).attr("id") + ", href=" + $(this).attr("href"));
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// 阻止 a 标签默认行为
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event.preventDefault();
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if ($(this).attr("href")) {
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// 下载视频
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download($(this).attr("href"));
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// 打开一个新的标签页面: 新标签页获取页面焦点,新标签页面关闭后，焦点重新回到源页面
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GM_openInTab($(this).attr("href"), { active: true, setParent: true });
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}
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});
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} else {
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// console.log(videoJQ.attr("id") +" 已存在下载按钮：" + downloadIdAttrName + ", src=" + videoJQ.attr("src"));
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}
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}
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console.log('加载脚本');
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/**
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* 拦截并修改ajax请求
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*/
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window.beforeXMLHttpRequestOpen = function (xhr, options) {
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//console.log('before open', xhr);
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// 修改url
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//options.url = options.url.replace('wd=123', 'wd=456');
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// 修改method
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// options.method = 'POST';
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};
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/**
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* 拦截并修改ajax请求
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*/
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window.beforeXMLHttpRequestSend = function (xhr, body) {
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//console.log('before send', xhr);
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xhr.onload = () => {
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if (xhr.status < 200 || xhr.status >= 300) {//非2xx区间状态值走失败
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console.log(xhr.statusText)
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}
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var url = new URL(xhr.responseURL)
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if (url.pathname == '/api/getHttpVideoInfo.do') {
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var result=JSON.parse(xhr.response);
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var videoURL=result.video.chapters4[0]["url"];
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console.log(videoURL);
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findVideoEle(videoURL);
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}
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}
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// 修改请求头
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//xhr.setRequestHeader('key1', 'value1');
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};
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/**
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* 重写open方法
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* https://developer.mozilla.org/zh-CN/docs/Web/API/XMLHttpRequest/open
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*/
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XMLHttpRequest.prototype.myOpen = XMLHttpRequest.prototype.open;
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XMLHttpRequest.prototype.open = function (method, url, async) {
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// 用对象便于修改参数
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var options = {
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method: method,
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url: url,
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async: async,
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};
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if ('function' === typeof window.beforeXMLHttpRequestOpen) {
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window.beforeXMLHttpRequestOpen(this, options);
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}
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this.myOpen(options.method, options.url, options.async);
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};
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/**
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* 重写send方法
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* https://developer.mozilla.org/zh-CN/docs/Web/API/XMLHttpRequest/send
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*/
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XMLHttpRequest.prototype.mySend = XMLHttpRequest.prototype.send;
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XMLHttpRequest.prototype.send = function (body) {
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if ('function' === typeof window.beforeXMLHttpRequestSend) {
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window.beforeXMLHttpRequestSend(this, body);
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}
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this.mySend(body);
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};
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})();
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@ -1,7 +1,7 @@
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<!--
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<!--
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* @Author: BlackTeay
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* @Author: BlackTeay
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* @Date: 2023-03-28 13:52:14
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* @Date: 2023-03-28 13:52:14
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* @LastEditTime: 2023-03-28 13:59:44
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* @LastEditTime: 2023-03-28 14:04:56
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* @LastEditors: BlackTeay
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* @LastEditors: BlackTeay
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* @Description:
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* @Description:
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* @FilePath: /tampermonkey-script/README.md
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* @FilePath: /tampermonkey-script/README.md
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@ -12,4 +12,10 @@
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</p>
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</p>
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<h1 align="center">JLNTV常用油猴脚本库</h1>
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<h1 align="center">JLNTV常用油猴脚本库</h1>
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<h4>脚本存放与libiary路径下</h4>
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现包含：
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1. [<a href="https://git.jlntv.work/blackteay/tampermonkey-script/raw/branch/master/libiary/Download_CCTV_Video.js">Download_CCTV_Video.js</a>] 央视网高清视频下载
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