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| let puppeteer = require('puppeteer') let url = require('url') let mysql = require('mysql')
let httpUrl = 'https://sobooks.cc/' let sqlOptions = { host: 'localhost', port: '3306', user: 'root', password: '123456', database: 'book', } let con = mysql.createConnection(sqlOptions) con.connect()
;(async function () { let debugOptions = { defaultViewport: { width: 1400, height: 720, }, headless: false, slowMo: 300, } let options = { headless: true } let browser = await puppeteer.launch(options)
function wait(millSeconds) { return new Promise(function (resolve, reject) { setTimeout(() => { resolve('成功执行延迟函数,延迟时间:' + millSeconds) }, millSeconds) }) }
async function getAllNum(link) { let page = await browser.newPage() await page.goto(link) await page.setRequestInterception(true) page.on('request', (interceptedRequest) => { let urlObj = url.parse(interceptedRequest.url()) if (urlObj.hostname == 'googleads.g.doubleclick.net') { interceptedRequest.abort() } else { interceptedRequest.continue() } }) let pageNum = await page.$eval( '.pagination li:last-child span', (element) => { let text = element.innerHTML .substring(1, element.innerHTML.length - 2) .trim() return text } ) return pageNum }
async function pageList(num) { let pageListUrl = 'https://sobooks.cc/page/' + num let page = await browser.newPage() await page.goto(pageListUrl) await page.setRequestInterception(true) page.on('request', (interceptedRequest) => { let urlObj = url.parse(interceptedRequest.url()) if (urlObj.hostname == 'googleads.g.doubleclick.net') { interceptedRequest.abort() } else { interceptedRequest.continue() } }) let arrPage = await page.$$eval( '.card .card-item .thumb-img>a', (elements) => { let arr = [] elements.forEach((element, i) => { var obj = { href: element.getAttribute('href'), title: element.getAttribute('title'), } arr.push(obj) }) return arr } ) page.close() arrPage.forEach(async (pageObj, i) => { await wait(500 * i) getPageInfo(pageObj) }) }
async function getPageInfo(pageObj) { let page = await browser.newPage() await page.goto(pageObj.href) await page.setRequestInterception(true) page.on('request', (interceptedRequest) => { let urlObj = url.parse(interceptedRequest.url()) if (urlObj.hostname == 'googleads.g.doubleclick.net') { interceptedRequest.abort() } else { interceptedRequest.continue() } }) let eleA = await page.$('.dltable tr:nth-child(3) a:last-child') let aHref = await eleA.getProperty('href') aHref = aHref._remoteObject.value let bookUrl = pageObj.href let download = aHref.split('?url=')[1] let bookname = pageObj.title let cataory = await page.$eval('.meta .muted:nth-child(1) a', (element) => { let cataory = element.innerHTML return cataory }) let author = await page.$eval('.meta .muted:nth-child(2) a', (element) => { let author = element.innerHTML return author }) let bookimg = await page.$eval( '.article-content .bookpic img', (element) => { let bookimg = element.getAttribute('src') return bookimg } ) let viewcount = await page.$eval( '.article-content .bookinfo li:nth-child(3)', (element) => { let viewcount = element.innerHTML let reg = /<strong>浏览:<\/strong>(.*?)次/gis viewcount = reg.exec(viewcount)[1] return viewcount } ) let tag = await page.$$eval( '.article-content .bookinfo li:nth-child(4) a', (elements) => { let arr = [] elements.forEach((element, i) => { let tag = element.innerHTML arr.push(tag) }) return arr } ) let pubtime = await page.$eval( '.article-content .bookinfo li:nth-child(5)', (element) => { let pubtime = element.innerHTML.split('<strong>时间:</strong>')[1] return pubtime } ) let brief = await page.$eval('.article-content>p', (element) => { let brief = element.innerHTML return brief }) let infoList = [ bookname, author, viewcount, `${tag}`, pubtime, bookimg, cataory, brief, bookUrl, download, ] let strSql = 'insert into book (bookname,author,viewcount,tag,pubtime,bookimg,cataory,brief,bookUrl,download) values (?,?,?,?,?,?,?,?,?,?)' con.query(strSql, infoList, (err, res) => { console.log(err) console.log(res) }) } async function spider(link) { let allPageNum = await getAllNum(link) console.log('成功获取页面总数:' + allPageNum)
for (let i = 1; i <= allPageNum; i++) { await wait(4000 * i) pageList(i) } } spider(httpUrl) })()
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