代码挺舒服，最主要能采集到图片，还是jpg的。

puppeteer爬取豆瓣电影信息

更多项目地址https://github.com/zhentaoo/puppeteer-deep

const puppeteer = require('puppeteer')
const url = `https://movie.douban.com/tag/#/?sort=T&range=0,10&tags=2020`
const sleep = time =>{ new Promise(resolve=>{
    //成功执行
    try{
    setTimeout(resolve,time)}
    catch(err){
        console.log(err)
    }
})};
    /*
    const sleep =function(time){
        return new Promise(function(resolve){
            setTimeout(resolve,time)
        })
    }**/
    (async ()=>{
        try{
        console.log('start visit the target page')
        const browser = await puppeteer.launch({
            args:['--no-sandbox'],//不是沙箱模式
            dumpio:false,
            headless: false //是否运行在浏览器headless模式，true为不打开浏览器执行，默认为true
        });
        //args :传递给 chrome 实例的其他参数，比如你可以使用”–ash-host-window-bounds=1024x768” 来设置浏览器窗口大小。更多参数参数列表可以参考这里
        //dumpio 是否将浏览器进程stdout和stderr导入到process.stdout和process.stderr中。默认为false。
        const page = await browser.newPage();
        await page.goto(url,{
            waitUntil:'networkidle2' //等待页面不动了，说明加载完毕了
        });
        await sleep(3000)
        await page.waitForSelector('.more')  //异步的，等待元素加载之后，否则获取不到异步加载的元素
            for (let i= 0 ; i<3; i++){
                await sleep(3000)
                await page.click('.more') //点击按钮一次
            }
        //evaluate 方法中注册回调函数，并分析dom结构，从下图可以进行详细分析，并通过document.querySelectorAll('ol li a')拿到文章的所有链接
        const result = await page.evaluate(()=>{
            //这里调用了了windows里的jQuary的方法
            var $= window.$
            var items = $('.list-wp a')
            var  links = []
            //判断这里是否列表有数值
            if(items.length>=1){
                items.each((index,item)=>{
                    let it=$(item)
                    console.log(it)
                    let doubanID= it.find('div').data('id')
                    // jQuery >= 1.4.3，可以选择div中data-id属性的值
                    let title = it.find('.title').text()
                    let rate= Number(it.find('.rate').text())
                    let poster = it.find('img').attr('src').replace('s_retio','l_retio')
                    links.push({
                        doubanID,
                        title,
                        rate,
                        poster
                    })
                })
            }
            return links
        })
        browser.close()
        console.log(result)
    }catch(err){
            console.log(err)
        }
    })();

代码测试了，ok的

采集结果：

start visit the target page
[
  {
    doubanID: 26754233,
    title: '八佰',
    rate: 7.5,
    poster: 'https://img9.doubanio.com/view/photo/s_ratio_poster/public/p2615992304.jpg'
  },
  {
    doubanID: 35051512,
    title: '我和我的家乡',
    rate: 7,
    poster: 'https://img2.doubanio.com/view/photo/s_ratio_poster/public/p2620453443.jpg'
  },
  {
    doubanID: 34477588,
    title: '弥留之国的爱丽丝 第一季',
    rate: 8,
    poster: 'https://img2.doubanio.com/view/photo/s_ratio_poster/public/p2624050592.jpg'
  },
  {
    doubanID: 35096844,
    title: '送你一朵小红花',
    rate: 7.2,
    poster: 'https://img1.doubanio.com/view/photo/s_ratio_poster/public/p2618247457.jpg'
  },
  {
    doubanID: 33440244,
    title: '一直游到海水变蓝',
    rate: 6.7,
    poster: 'https://img1.doubanio.com/view/photo/s_ratio_poster/public/p2679356779.jpg'
  },
  {
    doubanID: 25907124,
    title: '姜子牙',
    rate: 6.6,
    poster: 'https://img1.doubanio.com/view/photo/s_ratio_poster/public/p2621219978.jpg'
  },
  {
    doubanID: 30128916,
    title: '夺冠',
    rate: 7.1,
    poster: 'https://img2.doubanio.com/view/photo/s_ratio_poster/public/p2620083313.jpg'
  },
  {
    doubanID: 33447642,
    title: '沉默的真相',
    rate: 9,
    poster: 'https://img2.doubanio.com/view/photo/s_ratio_poster/public/p2620780603.jpg'
  },
  {
    doubanID: 30444960,
    title: '信条',
    rate: 7.6,
    poster: 'https://img1.doubanio.com/view/photo/s_ratio_poster/public/p2612061299.jpg'
  },
  {
    doubanID: 24733428,
    title: '心灵奇旅',
    rate: 8.7,
    poster: 'https://img9.doubanio.com/view/photo/s_ratio_poster/public/p2626308994.jpg'
  },
  {
    doubanID: 30171424,
    title: '拆弹专家2',
    rate: 7.5,
    poster: 'https://img2.doubanio.com/view/photo/s_ratio_poster/public/p2621379901.jpg'
  },
  {
    doubanID: 30306570,
    title: '囧妈',
    rate: 5.9,
    poster: 'https://img2.doubanio.com/view/photo/s_ratio_poster/public/p2581835383.jpg'
  },
  {
    doubanID: 35155748,
    title: '金刚川',
    rate: 6.5,
    poster: 'https://img1.doubanio.com/view/photo/s_ratio_poster/public/p2623301908.jpg'
  },
  {
    doubanID: 33404425,
    title: '隐秘的角落',
    rate: 8.8,
    poster: 'https://img1.doubanio.com/view/photo/s_ratio_poster/public/p2609064048.jpg'
  },
  {
    doubanID: 33432655,
    title: '困在时间里的父亲',
    rate: 8.6,
    poster: 'https://img9.doubanio.com/view/photo/s_ratio_poster/public/p2628877926.jpg'
  },
  {
    doubanID: 34894753,
    title: '沐浴之王',
    rate: 6,
    poster: 'https://img2.doubanio.com/view/photo/s_ratio_poster/public/p2627788612.jpg'
  },
  {
    doubanID: 26357307,
    title: '花木兰',
    rate: 4.8,
    poster: 'https://img2.doubanio.com/view/photo/s_ratio_poster/public/p2590336843.jpg'
  },
  {
    doubanID: 35069506,
    title: '一点就到家',
    rate: 6.5,
    poster: 'https://img2.doubanio.com/view/photo/s_ratio_poster/public/p2621101922.jpg'
  },
  {
    doubanID: 30466931,
    title: '波斯语课',
    rate: 8.1,
    poster: 'https://img2.doubanio.com/view/photo/s_ratio_poster/public/p2588101332.jpg'
  },
  {
    doubanID: 30323687,
    title: '夜间小屋',
    rate: 6.3,
    poster: 'https://img9.doubanio.com/view/photo/s_ratio_poster/public/p2637498114.jpg'
  }
]
[Finished in 7.9s]

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