cnki-download

name cnki-download description Download a paper PDF/CAJ from CNKI. Requires user to be logged in. Use when user wants to download a specific paper. argument-hint [paper URL or blank if already on detail page] CNKI Paper Download (文献下载) RC browser tool : navigate with browser action=open url="..." ; run the JS in each step via browser action=act kind=evaluate fn="<the async function shown>" (the whole function body goes into fn ). Never pass a profile — RC uses its default managed Chrome (CDP 18800). Prerequisites User must be logged in to CNKI with download permissions. Arguments $ARGUMENTS is optionally a paper detail URL. If blank, uses current page. Steps 1. Navigate (if URL provided) If URL provided: use browser action=open to go to the URL directly (no wait_for needed — Step 2 handles waiting). Important : Always use browser action=open instead of clicking links on the search results page. Clicking opens a new tab and wastes 3 extra tool calls ( browser action=tabs + browser action=focus + browser action=snapshot ). 2. Check status and download (single async browser act kind=evaluate) Replace FORMAT with "pdf" or "caj" : async () => { // Wait for page load await new Promise ( ( r, j ) => { let n = 0 ; const c = ( ) => { if ( document . querySelector ( '.brief h1' )) r (); else if (++n > 30 ) j ( 'timeout' ); else setTimeout (c, 500 ); }; c (); }); // Captcha check const cap = document . querySelector ( '#tcaptcha_transform_dy' ); if (cap && cap. getBoundingClientRect (). top >= 0 ) { return { error : 'captcha' , message : 'CNKI 正在显示滑块验证码。请在 Chrome 中手动完成拼图验证。' }; } const format = "FORMAT" ; // "pdf" or "caj" // Check download links const pdfLink = document . querySelector ( '#pdfDown' ) || document . querySelector ( '.btn-dlpdf a' ); const cajLink = document . querySelector ( '#cajDown' ) || document . querySelector ( '.btn-dlcaj a' ); // Check login status. The download links (#pdfDown/#cajDown) are ALWAYS present // even when logged out — clicking them just opens a login/order page — so their // presence is NOT a login signal. The reliable signal is the page header: when // logged out it shows the "机构登录 / 个人登录" CTAs and the personal-name slot is // empty; once logged in the CTA text is replaced by the user's name. const loginArea = document . querySelector ( '.ecp_header_login_area, .ecp_header_login_status' ); const loginAreaText = loginArea?. innerText ?. replace ( /\s+/g , ' ' ). trim () || '' ; const personalName = document . querySelector ( '.ecp_header_personalName_loginbg' )?. innerText ?. trim () || '' ; const notLogged = !personalName && /个人登录/ . test (loginAreaText); if (notLogged) { return { error : 'not_logged_in' , message : '下载需要登录。请先在 Chrome 中登录知网账号。' }; } const title = document . querySelector ( '.brief h1' )?. innerText ?. trim ()?. replace ( /\s*网络首发\s*$/ , '' ) || '' ; if (format === 'pdf' && pdfLink) { pdfLink. click (); return { status : 'downloading' , format : 'PDF' , title }; } else if (format === 'caj' && cajLink) { cajLink. click (); return { status : 'downloading' , format : 'CAJ' , title }; } else if (pdfLink) { pdfLink. click (); return { status : 'downloading' , format : 'PDF' , title }; } else if (cajLink) { cajLink. click (); return { status : 'downloading' , format : 'CAJ' , title }; } return { error : 'no_download' , message : '未找到下载链接' , hasPDF : !!pdfLink, hasCAJ : !!cajLink }; } 3. Report Based on JS result: status: downloading → "PDF 下载已触发：{title}。请在 Chrome 下载管理器中查看。" error: not_logged_in → tell user to log in error: captcha → tell user to solve captcha Tool calls: 1–2 (browser action=open if URL + browser act kind=evaluate) Verified selectors Element Selector Notes PDF download #pdfDown <a> inside li.btn-dlpdf CAJ download #cajDown <a> inside li.btn-dlcaj Download area .download-btns parent <div> Login status .ecp_header_login_area / .ecp_header_personalName_loginbg logged-out shows "机构登录 / 个人登录" CTA + empty name slot; logged-in shows username. #pdfDown / #cajDown exist in BOTH states — do NOT treat their presence as login Title .brief h1 strip trailing "网络首发" Captcha detection Check #tcaptcha_transform_dy element's getBoundingClientRect().top >= 0 . Only active when top >= 0 (visible). Pre-loaded SDK sits at top: -1000000px .