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一键下载当前页面所有录音文件,显示爬取进度和单个文件下载状态
当前为
// ==UserScript==
// @name JS 下载云听电台往期音频 优化版
// @namespace https://www.radio.cn/
// @version 1.2
// @description 一键下载当前页面所有录音文件,显示爬取进度和单个文件下载状态
// @match https://www.radio.cn/*
// @grant none
// @license MIT
// ==/UserScript==
(function() {
'use strict';
function formatDate(dateStr) {
const date = new Date(dateStr);
const year = date.getFullYear();
const month = date.getMonth() + 1;
const day = date.getDate();
return year + '-' + (month < 10 ? '0' : '') + month + '-' + (day < 10 ? '0' : '') + day;
}
function downloadAll() {
const downloadLinks = [];
for (const a of document.getElementsByTagName('a')) {
if (!a.hasAttribute('onclick')) continue;
const onclick = a.getAttribute('onclick');
const matches = onclick.match(/downLiveRecord\(['"](.*?)['"]/);
if (matches) {
let href = matches[1].replace(/\[|\]|"/g, '');
const dateMatch = href.match(/\/(\d{4})(\d{2})(\d{2})\//);
if (dateMatch) {
const dateStr = dateMatch[1] + '-' + dateMatch[2] + '-' + dateMatch[3];
const fileName = formatDate(dateStr) + '.mp3';
if (href.startsWith('https://')) {
downloadLinks.push({href: href, fileName: fileName});
} else {
href = 'https://' + href.replace(/^http:\/\//i, '');
downloadLinks.push({href: href, fileName: fileName});
}
}
}
}
downloadLinks.sort(function(a, b){
return a.fileName.localeCompare(b.fileName);
});
const progressEl = document.createElement('div');
progressEl.style.position = 'fixed';
progressEl.style.bottom = '100px';
progressEl.style.right = '50px';
progressEl.style.padding = '10px 20px';
progressEl.style.fontSize = '16px';
progressEl.style.borderRadius = '5px';
progressEl.style.color = '#fff';
progressEl.style.backgroundColor = '#f00';
progressEl.style.cursor = 'default';
document.body.appendChild(progressEl);
const currentProgressEl = document.createElement('div');
currentProgressEl.style.position = 'fixed';
currentProgressEl.style.bottom = '160px';
currentProgressEl.style.right = '50px';
currentProgressEl.style.width = '200px';
currentProgressEl.style.padding = '10px 20px';
currentProgressEl.style.fontSize = '16px';
currentProgressEl.style.borderRadius = '5px';
currentProgressEl.style.color = '#fff';
currentProgressEl.style.backgroundColor = '#009688';
currentProgressEl.style.cursor = 'default';
currentProgressEl.style.display = 'none';
document.body.appendChild(currentProgressEl);
let downloadCount = 0;
function downloadNext() {
if (downloadCount >= downloadLinks.length) {
progressEl.textContent = '爬取进度：' + downloadCount + '/' + downloadLinks.length + '，全部完成';
currentProgressEl.style.display = 'none';
return;
}
const link = downloadLinks[downloadCount];
const xhr = new XMLHttpRequest();
xhr.open('GET', link.href);
xhr.responseType = 'blob';
xhr.onload = function() {
if (xhr.status === 200) {
downloadCount++;
const blob = new Blob([xhr.response], {type: 'audio/mp3'});
URL.revokeObjectURL(link.href);
const url = URL.createObjectURL(blob);
const a = document.createElement('a');
a.href = url;
a.download = link.fileName;
document.body.appendChild(a);
a.click();
a.remove();
progressEl.textContent = '爬取进度：' + downloadCount + '/' + downloadLinks.length;
currentProgressEl.style.display = 'none';
setTimeout(downloadNext, 500);
} else {
console.log(xhr.statusText);
setTimeout(downloadNext, 500);
}
};
xhr.onerror = function() {
console.log(xhr.statusText);
setTimeout(downloadNext, 500);
};
xhr.onprogress = function(event) {
if (event.lengthComputable) {
const percent = ((event.loaded / event.total) * 100).toFixed(2);
const fileName = link ? link.fileName : '';
currentProgressEl.textContent = fileName + ': ' + percent + '%';
currentProgressEl.style.display = '';
}
};
xhr.send();
}
downloadNext();
}
const downloadBtn = document.createElement('button');
downloadBtn.textContent = '下载所有录音文件';
downloadBtn.style.position = 'fixed';
downloadBtn.style.bottom = '40px';
downloadBtn.style.right = '50px';
downloadBtn.style.padding = '10px 20px';
downloadBtn.style.fontSize = '16px';
downloadBtn.style.borderRadius = '5px';
downloadBtn.style.color = '#fff';
downloadBtn.style.backgroundColor = '#009688';
downloadBtn.style.cursor = 'pointer';
downloadBtn.addEventListener('click', function() {
downloadAll();
});
document.body.appendChild(downloadBtn);
})();