Pyppeteer 使用笔记

红太狼 2023-01-06 11:39 65阅读 0赞

[https://mp.weixin.qq.com/s/Iz-DY1UrSfVFRFh5CyHl3Q][https_mp.weixin.qq.com_s_Iz-DY1UrSfVFRFh5CyHl3Q]

*  Puppeteer 是 Google 基于 Node.js 开发的一个工具，有了它我们可以通过 JavaScript 来控制 Chrome 浏览器的一些操作，当然也可以用作网络爬虫上，其 API 极其完善，功能非常强大。 而 Pyppeteer 又是什么呢？它实际上是 Puppeteer 的 Python 版本的实现，但他不是 Google 开发的，是一位来自于日本的工程师依据 Puppeteer 的一些功能开发出来的非官方版本。

GitHub 地址: [https://github.com/miyakogi/pyppeteer][https_github.com_miyakogi_pyppeteer]

官方文档: [https://miyakogi.github.io/pyppeteer/reference.html][https_miyakogi.github.io_pyppeteer_reference.html]

基础用法

import asyncio
    from pyppeteer import launch
    
    
    async def main():
        # headless参数设为False，则变成有头模式
        # Pyppeteer支持字典和关键字传参，Puppeteer只支持字典传参
        
        # 指定引擎路径
        # exepath = r'C:\Users\Administrator\AppData\Local\pyppeteer\pyppeteer\local-chromium\575458\chrome-win32/chrome.exe'
        # browser = await launch({'executablePath': exepath, 'headless': False, 'slowMo': 30})
        
        browser = await launch(
            # headless=False,
            {'headless': False}
        )
    
        page = await browser.newPage()
    
        # 设置页面视图大小
        await page.setViewport(viewport={'width': 1280, 'height': 800})
    
        # 是否启用JS，enabled设为False，则无渲染效果
        await page.setJavaScriptEnabled(enabled=True)
            # 超时间见 1000 毫秒
        res = await page.goto('https://www.toutiao.com/', options={'timeout': 1000})
        resp_headers = res.headers  # 响应头
        resp_status = res.status   # 响应状态
        
        # 等待
        await asyncio.sleep(2)
        # 第二种方法，在while循环里强行查询某元素进行等待
        while not await page.querySelector('.t'):
            pass
        # 滚动到页面底部
        await page.evaluate('window.scrollBy(0, document.body.scrollHeight)')
    
        await asyncio.sleep(2)
        # 截图 保存图片
        await page.screenshot({'path': 'toutiao.png'})
        
        # 打印页面cookies
        print(await page.cookies())
    
        """ 打印页面文本 """
        # 获取所有html内容
        print(await page.content())
    
        # 在网页上执行js脚本
        dimensions = await page.evaluate(pageFunction='''() => {
            return {
                width: document.documentElement.clientWidth,   //页面宽度
                height: document.documentElement.clientHeight,  //页面高度
                deviceScaleFactor: window.devicePixelRatio,  //像素比 1.0000000149011612
            }
        }''', force_expr=False)   # force_expr=False  执行的是函数
        print(dimensions)
    
        # 只获取文本  执行js脚本 force_expr 为True 则执行的是表达式
        content = await page.evaluate(pageFunction='document.body.textContent', force_expr=True)
        print(content)
    
        # 打印当前页标题
        print(await page.title())
    
        # 抓取新闻内容 可以使用xpath表达式
        """
        # Pyppeteer三种解析方式
        Page.querySelector()  # 选择器
        Page.querySelectorAll() 
        Page.xpath()    # xpath 表达式
        # 简写方式为:
        Page.J(), Page.JJ(), and Page.Jx()
        """
        element = await page.querySelector(".feed-infinite-wrapper > ul>li");  # 只抓取一个
        print(element)
        # 获取所有文本内容  执行js
        content = await page.evaluate('(element) => element.textContent', element)
        print(content)
    
        # elements = await page.xpath('//div[@class="title-box"]/a')
        elements = await page.querySelectorAll(".title-box a")
        for item in elements:
            print(await item.getProperty('textContent'))
            # <pyppeteer.execution_context.JSHandle object at 0x000002220E7FE518>
    
            # 获取文本
            title_str = await (await item.getProperty('textContent')).jsonValue()
    
            # 获取链接
            title_link = await (await item.getProperty('href')).jsonValue()
            print(title_str)
            print(title_link)
    
        # 关闭浏览器
        await browser.close()
    
    asyncio.get_event_loop().run_until_complete(main())

import asyncio
    import pyppeteer
    from collections import namedtuple
    
    Response = namedtuple("rs", "title url html cookies headers history status")
    
    async def get_html(url):
        browser = await pyppeteer.launch(headless=True, args=['--no-sandbox'])
        page = await browser.newPage()
        res = await page.goto(url, options={'timeout': 3000})
        data = await page.content()
        title = await page.title()
        resp_cookies = await page.cookies()  # cookie
        resp_headeers = res.headers # 响应头
        resp_status = res.status  # 响应状态
        print(data)
        print(title)
        print(resp_headers)
        print(resp_status)
        return title
    
    if __name__ == '__main__':
        url_list = ["https://www.toutiao.com/",
                    "http://jandan.net/ooxx/page-8#comments",
                    "https://www.12306.cn/index/"
                ]
        task = [get_html(url) for url in url_list]
    
        loop = asyncio.get_event_loop()
        results = loop.run_until_complete(asyncio.gather(*task))
        for res in results:
            print(res)
    
    headers = {'date': 'Sun, 28 Apr 2019 06:50:20 GMT',
               'server': 'Cmcc',
               'x-frame-options': 'SAMEORIGIN\nSAMEORIGIN',
               'last-modified': 'Fri, 26 Apr 2019 09:58:09 GMT',
               'accept-ranges': 'bytes',
               'cache-control': 'max-age=43200',
               'expires': 'Sun, 28 Apr 2019 18:50:20 GMT',
               'vary': 'Accept-Encoding,User-Agent',
               'content-encoding': 'gzip',
               'content-length': '19823',
               'content-type': 'text/html',
               'connection': 'Keep-alive',
               'via': '1.1 ID-0314217270751344 uproxy-17'}

模拟输入

# 模拟输入 账号密码 {'delay': rand_int()} 为输入时间
    await page.type('#TPL_username_1', "sadfasdfasdf")
    await page.type('#TPL_password_1', "123456789", )
    
    await page.waitFor(1000)
    await page.click("#J_SubmitStatic")

使用tkinter获取页面高度 宽度

def screen_size():
        """使用tkinter获取屏幕大小"""
        import tkinter
        tk = tkinter.Tk()
        width = tk.winfo_screenwidth()
        height = tk.winfo_screenheight()
        tk.quit()
        return width, height

爬取京东商城

import requests
    from bs4 import BautifulSoup
    from pyppeteer import launch
    import asyncio
    
    def screen_size():
        """使用tkinter获取屏幕大小"""
        import tkinter
        tk = tkinter.Tk()
        width = tk.winfo_screenwidth()
        await page.setViewport(viewport={"width": width, "height": height})
        await page.setJavaScriptEnabled(enabled=True)
        await page.setUserAgent(
            'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36 Edge/16.16299')
       await page.goto(url)
    
        # await asyncio.sleep(2)
        
        await page.evaluate('window.scrollBy(0, document.body.scrollHeight)')
    
        await asyncio.sleep(1)
    
        # content = await page.content()
        li_list = await page.xpath('//*[@id="J_goodsList"]/ul/li')
    
        # print(li_list)
        item_list = []
        for li in li_list:
            a = await li.xpath('.//div[@class="p-img"]/a')
            detail_url = await (await a[0].getProperty("href")).jsonValue()
            promo_words = await (await a[0].getProperty("title")).jsonValue()
            a_ = await li.xpath('.//div[@class="p-commit"]/strong/a')
            p_commit = await (await a_[0].getProperty("textContent")).jsonValue()
            i = await li.xpath('./div/div[3]/strong/i')
            price = await (await i[0].getProperty("textContent")).jsonValue()
            em = await li.xpath('./div/div[4]/a/em')
            title = await (await em[0].getProperty("textContent")).jsonvalue()
            item = {
                "title": title,
                "detail_url": detail_url,
                "promo_words": promo_words,
                'p_commit': p_commit
                'price': price
            }
            item_list.append(item)
            # print(item)
            # break
        # print(content)
        
        await page_close(browser)
        return item_list
    
    async def page_close(browser):
        for _page in await browser.pages():
            await _page.close()
        await browser.close()
    
    msg = "手机"
    url = "https://search.jd.com/Search?keyword={}&enc=utf-8&qrst=1&rt=1&stop=1&vt=2&wq={}&cid2=653&cid3=655&page={}"
    
    task_list = []
    for i in range(1, 6):
        page = i * 2 - 1
        url = url.format(msg, msg, page)
        task_list.append(main(url))
    
    loop = asyncio.get_event_loop()
    results = loop.run_until_complete(asyncio.gather(*task_list))
    # print(results, len(results))
    for i in results:
        print(i, len(i))
    
    # soup = BeautifulSoup(content, 'lxml')
    # div = soup.find('div', id='J_goodsList')
    # for i, li in enumerate(div.find_all('li', class_='gl-item')):
    #     if li.select('.p-img a'):
    #        print(li.select('.p-img a')[0]['href'], i)
    #        print(li.select('.p-price i')[0].get_text(), i)
    #        print(li.select('.p-name em')[0].text, i)
    #     else:
    #        print("#" * 200)
    #        print(li)

抓取淘宝网

*  taobao.py

import asyncio
    import time
    from pyppeteer.launcher import launch
    from alifunc import mouse_slide, input_time_random
    from exe_js import js1, js3, js4, js5
    
    def screen_size():
        """使用tkinter获取屏幕大小"""
        import tkinter
        tk = tkinter.Tk()
        width = tk.winfo_screenwidth()
        height = tk.winfo_screenheight()
        tk.quit()
        return width, height
    
    async def main(username, pwd, url):
        browser = await launch({'headless': False, 'args': ['--no-sandbox'], }, userDataDir='./userdata',
                    args=['--window-size=1366,768'])
        page = await browser.newPage()
        width, height = screen_size()
        await page.setViewport(viewport={"width": width, "height": height})
        await page.setUserAgent (
            'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36 Edge/16.16299')
    
        await page.goto(url)
        await page.evaluate(js1)
        await page.evaluate(js3)
        await page.evaluate(js4)
        await page.evaluate(js5)
    
        pwd_login = await page.querySelector('.J_Quick2Static')
        # print(await (await pwd_login.getProperty('textContent')).jsonValue())
        await pwd_login.click()
    
        await page.type('#TPL_username_1', username, {'delay': input_time_random() - 50})
        await page.type('#TPL_password_1', pwd, {'delay': input_time_random()})
    
        await page.screenshot({'path': './headless-test-result.png'})
        time.sleep(2)
    
        slider = await page.Jeval('#nocaptcha', 'node => node.style')  # 是否有滑块
    
        if slider:
            print('出现滑块情况判定')
            await page.screenshot({'path': './headless-login-slide.png'})
            flag = await mouse_slide(page=page)
            if flag:
                print(page.url)
                await page.keyboard.press('Enter')
    
                await get_cookie(page)
        else:
            await page.keyboard.press('Enter')
            await page.waitFor(20)
            await page.waitForNavigation()
            try:
                global error
                error = await page.Jeval('.error', 'node => node.textContent')
            except Exception as e:
                error = None
                print(e, "错啦")
            finally:
                if error:
                    print('确保账户安全重新入输入')
                else:
                    print(page.url)
                    # 可继续网页跳转 已经携带 cookie
                    # await get_search(page)
                    await get_cookie(page)
        await def page_close(browser):
    
    async def page_close(browser):
        for _page in await browser.pages():
            await _page.close()
        await browser.close()
    
    async def get_search(page):
        # https://s.taobao.com/search?q={查询的条件}&p4ppushleft=1%2C48&s={每页 44 条 第一页 0 第二页 44}&sort=sale-desc
        await asyncio.sleep(5)
        # print(await page.content())
    
    # 获取登录后cookie
    async def get_cookie(page):
        res = await page.content()
        cookies_list = await page.cookies()
        cookies = ''
        for cookie in cookies_list:
            str_cookie = '{0}={1};'
            str_cookie = str_cookie.format(cookie.get('name'), cookie.get('value'))
            cookies += str_cookie
        print(cookies)
        # 将cookie放入cookie池 以便多次请求 封账号 利用cooie 对搜索内容进行爬取
    
        return cookies
    
    if __name__ == '__main__':
        username = 'username'
        pwd = 'password'
        url = "https://login.taobao.com/member/login.jhtml?spm=a21bo.2017.754894437.1.5af911d9qqVAb1&f=top&redirectURL=https%3A%2F%2Fwww.taobao.com%2F"
        
        loop = asyncio.get_event_loop()
        loop.run_until_complete(main(username, pwd, url))

*  exe\_js.py

js1 = '''() => {
            Object.defineProperties(navigator,{
                 webdriver:{
                   get: () => false
                 }
               })
            }'''
    
    js2 = '''() => {
            alert (
                window.navigator.webdriver
            )
        }'''
    
    js3 = '''() => {
            window.navigator.chrome = {
        runtime: {},
        // etc.
      };
        }'''
    
    js4 = '''() =>{
    Object.defineProperty(navigator, 'languages', {
          get: () => ['en-US', 'en']
        });
            }'''
    
    js5 = '''() =>{
    Object.defineProperty(navigator, 'plugins', {
        get: () => [1, 2, 3, 4, 5,6],
      });
            }'''

*  alifunc.py

from retrying import retry   # 错误自动重试
    import time, asyncio, random
    
    def retry_if_result_none(result):
        return result is None
    
    @retry(retry_on_result=retry_if_result_none, )
    async def mouse_slide(page=None):
        await asyncio.sleep(3)
        try:
            await page.hover('#nc_1_n1z')
            await page.mouse.down()
            await page.mouse.move(2000, 0, {'delay': random.randint(1000, 2000)})
            await page.mouse.up()
    
        except Exception as e:
            print(e, '    :slide login False')
            return None
        else:
            await asyncio.sleep(3)
            slider_again = await page.Jeval('.nc-lang-cnt', 'node => node.textContent')
            if slider_again != '验证通过':
                return None
            else:
                await page.screenshot({'path': './headless-slide-result.png'})
                print('验证通过')
                return 1
    
    def input_time_random():
        return random.randint(100, 151)

**利用获取到的cookie 爬取搜索内容**

import json
    import requests
    import re
    
    # 设置 cookie 池 随机发送请求 通过 pyppeteer 获取 cookie
    cookie = '_tb_token_=edd7e354dee53;t=fed8f4ca1946ca1e73223cfae04bc589;sg=20f;cna=2uJSFdQGmDMCAbfFWXWAC4Jv;cookie2=1db6cd63ad358170ea13319f7a862c33;_l_g_=Ug%3D%3D;v=0;unb=3150916610;skt=49cbfd5e01d1b550;cookie1=BxVRmD3sh19TaAU6lH88bHw5oq%2BgcAGcRe229Hj5DTA%3D;csg=cf45a9e2;uc3=vt3=F8dByEazRMnQZDe%2F9qI%3D&id2=UNGTqfZ61Z3rsA%3D%3D&nk2=oicxO%2BHX4Pg%3D&lg2=U%2BGCWk%2F75gdr5Q%3D%3D;existShop=MTU1Njg3MDM3MA%3D%3D;tracknick=%5Cu7433150322;lgc=%5Cu7433150322;_cc_=V32FPkk%2Fhw%3D%3D;mt=ci=86_1;dnk=%5Cu7433150322;_nk_=%5Cu7433150322;cookie17=UNGTqfZ61Z3rsA%3D%3D;tg=0;enc=tThHs6Sn3BAl8v1fu3J4tMpgzA1n%2BLzxjib0vDAtGsXJCb4hqQZ7Z9fHIzsN0WghdcKEsoeKz6mBwPUpyzLOZw%3D%3D;JSESSIONID=B3F383B3467EC60F8CA425935232D395;l=bBMspAhrveV5732DBOCanurza77OSIRYYuPzaNbMi_5pm6T_G4QOlC03xF96VjfRswYBqh6Mygv9-etuZ;hng=CN%7Czh-CN%7CCNY%7C156;isg=BLi41Q8PENDal3xUVsA-aPbfiWaKiRzB6vcTu_IpBPOmDVj3mjHsO86vxUQYW9SD;uc1=cookie16=W5iHLLyFPlMGbLDwA%2BdvAGZqLg%3D%3D&cookie21=W5iHLLyFeYZ1WM9hVnmS&cookie15=UIHiLt3xD8xYTw%3D%3D&existShop=false&pas=0&cookie14=UoTZ4ttqLhxJww%3D%3D&tag=8&lng=zh_CN;thw=cn;x=e%3D1%26p%3D*%26s%3D0%26c%3D0%26f%3D0%26g%3D0%26t%3D0;swfstore=34617;'
    
    headers = {
        'cookie': cookie,
        "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Safari/537.36"
    }
    
    rep = requests.get('https://s.taobao.com/search?q=手机&p4ppushleft=1%2C48&s=0&sort=sale-desc ', headers=headers)
    rep.encoding = 'utf-8'
    res = rep.text
    print(res)
    
    r = re.compile(r'g_page_config = (.*?)g_srp_loadCss', re.S)
    res = r.findall(res)
    
    data = res[0].strip().rstrip(';')
    dic_data = json.loads(data)
    auctions = dic_data.get('mods')['itemlist']['data']['auctions']
    
    # print(auctions,len(auctions))
    for item in auctions[1:]:
        print(item)
        break

### 针对iframe 的操作 ###

*  page.frames获取所有的iframe列表，需要判断操作的是哪一个iframe跟操作page一样操作

from pyppeteer import launch
    import asyncio
    
    async def main(url):
        w = await launch({'headless': False, 'args': ['--no-sandbox'], })
    
        page = await w.newPage()
        await page.setViewport({"width": 1366, 'height': 800})
        await page.goto(url)
        try:
            await asyncio.sleep(1)
    
            frame = page.frames
            print(frame)  # 需要找到是哪一个frame
            title = await frame[1].title()
            print(title)
            await asyncio.sleep(1)
            login = await frame[1].querySelector('#switcher_plogin')
            print(login)
            await login.click()
    
            await asyncio.sleep(20)
        except Exception as e:
            print(e, "EEEEEEEEE")
    
        for _page in await w.pages():
            await _page.close()
    
        await w.close()
    
    asyncio.get_event_loop().run_until_complete(main("https://i.qq.com/?rd=1"))
    # asyncio.get_event_loop().run_until_complete(main("https://www.gushici.com/"))

[https_mp.weixin.qq.com_s_Iz-DY1UrSfVFRFh5CyHl3Q]: https://mp.weixin.qq.com/s/Iz-DY1UrSfVFRFh5CyHl3Q
[https_github.com_miyakogi_pyppeteer]: https://github.com/miyakogi/pyppeteer
[https_miyakogi.github.io_pyppeteer_reference.html]: https://miyakogi.github.io/pyppeteer/reference.html