【油猴】人民日报合并下载脚本

在隔壁看到了个

人民日报下载助手(可导入iPad笔记软件）
https://www.nodeseek.com/post-483704-1

突然想到了自己之前也写了一个油猴的版本
能够一键下载当期pdf
唯一问题就是慢

装完了去试试吧
https://paper.people.com.cn/rmrb/pc/layout/202510/21/node_01.html

// ==UserScript==
// @name         人民日报 PDF 批量下载 + 合并
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  自动抓取人民日报当前日期所有版面 PDF 并可合并下载
// @author       ChatGPT
// @match        https://paper.people.com.cn/rmrb/html/*
// @match        https://paper.people.com.cn/rmrb/pc/*
// @match        http://paper.people.com.cn/rmrb/pc/*
// @match        http://paper.people.com.cn/rmrb/html/*
// @grant        none
// @require      https://cdn.jsdelivr.net/npm/pdf-lib/dist/pdf-lib.min.js
// ==/UserScript==

(function() {

  'use strict';

  // 添加按钮

  const btn = document.createElement('button');

  btn.textContent = '📥 下载全部 PDF（含合并）';

  btn.style = 'position:fixed;top:20px;right:20px;z-index:9999;padding:10px;background:#007bff;color:white;border:none;border-radius:5px;cursor:pointer;';

  document.body.appendChild(btn);

  btn.onclick = async () => {

    btn.disabled = true;

    btn.textContent = '⏳ 正在抓取数据...';

    try {

      const { date, detailedLinks } = await getPDFLinks(location.href);

      const validLinks = detailedLinks.filter(link => link.pdfUrl);

      if (validLinks.length === 0) {

        alert('❌ 未找到任何 PDF 链接');

        return;

      }

      const pdfBlobs = [];

      for (let i = 0; i < validLinks.length; i++) {

        const { title, pdfUrl } = validLinks[i];

        btn.textContent = `⬇️ 下载中：${title} (${i + 1}/${validLinks.length})`;

        const res = await fetch(pdfUrl);

        const blob = await res.blob();

        pdfBlobs.push({ title, blob });

      }

      btn.textContent = '📚 合并 PDF 中...';

      const mergedBlob = await mergePDFs(pdfBlobs.map(p => p.blob));

      const mergedFilename = `人民日报-${date}.pdf`;

      triggerDownload(mergedBlob, mergedFilename);

      btn.textContent = `✅ 下载完成：${mergedFilename}`;

    } catch (err) {

      console.error(err);

      alert('❌ 出错：' + err.message);

    } finally {

      setTimeout(() => {

        btn.disabled = false;

        btn.textContent = '📥 下载全部 PDF（含合并）';

      }, 5000);

    }

  };

  // 抓取当前页面所有 PDF 链接

  async function getPDFLinks(mainUrl) {

    const res = await fetch(mainUrl);

    const html = await res.text();

    const parser = new DOMParser();

    const doc = parser.parseFromString(html, 'text/html');

    const dateMatch = doc.querySelector('.date')?.textContent.match(/(\d{4})年(\d{2})月(\d{2})日/);

    const date = dateMatch ? `${dateMatch[1]}-${dateMatch[2]}-${dateMatch[3]}` : 'unknown';

    const pageLinks = [...doc.querySelectorAll('#pageLink')]

      .map(el => ({

        title: el.textContent.trim(),

        url: new URL(el.getAttribute('href'), mainUrl).href

      }));

    const detailedLinks = await Promise.all(pageLinks.map(async ({ title, url }) => {

      try {

        const res = await fetch(url);

        const html = await res.text();

        const subDoc = new DOMParser().parseFromString(html, 'text/html');

        const href = subDoc.querySelector('.paper-bot a')?.getAttribute('href');

        const pdfUrl = href ? new URL(href, mainUrl).href : null;

        return { title, pdfUrl };

      } catch {

        return { title, pdfUrl: null };

      }

    }));

    return { date, detailedLinks };

  }

  // 合并多个 PDF Blob

  async function mergePDFs(blobs) {

    const mergedPdf = await PDFLib.PDFDocument.create();

    for (const blob of blobs) {

      const arrayBuffer = await blob.arrayBuffer();

      const pdf = await PDFLib.PDFDocument.load(arrayBuffer);

      const pages = await mergedPdf.copyPages(pdf, pdf.getPageIndices());

      pages.forEach(p => mergedPdf.addPage(p));

    }

    const mergedBytes = await mergedPdf.save();

    return new Blob([mergedBytes], { type: 'application/pdf' });

  }

  // 触发浏览器下载

  function triggerDownload(blob, filename) {

    const a = document.createElement('a');

    a.href = URL.createObjectURL(blob);

    a.download = filename;

    a.click();

    URL.revokeObjectURL(a.href);

  }

})();