pyppeteer 使用案例

pyppeteer 使用案例

import time
from asyncio import sleep, get_event_loop

import requests
from pyppeteer import launch
from random import random
from re import compile, S
from faker import Factory

class TaoBaoSpider:
    def __init__(self):
        self.width, self.height = 1500, 800
        get_event_loop().run_until_complete(self.init())
        # get_event_loop().run_until_complete(self.login())
        # get_event_loop().run_until_complete(self.search())
        # get_event_loop().run_until_complete(self.crawl())

    async def init(self):
        # noinspection PyAttributeOutsideInit
        self.browser = await launch(headless=False,
                                    args=['--disable-infobars', f'--window-size={self.width},{self.height}', "--user-agent={}".format(Factory.create().user_agent()), '--proxy-server='+get_ip()])
        # noinspection PyAttributeOutsideInit
        self.page = await self.browser.newPage()
        await self.page.setViewport({'width': self.width, 'height': self.height})
        await self.page.goto('http://ipoipo.cn/page_59.html')
        await self.page.evaluate('()=>{Object.defineProperties(navigator,{webdriver:{get:()=>false}})}')
        response = await self.page.content()

        print(response)
        time.sleep(111)
        await self.page.close()

    @staticmethod
    async def login():
        await sleep(10)

    @property
    def sleep_time(self):
        return 1 + random() * 3

    async def search(self):
        await self.page.click('#q')
        await sleep(self.sleep_time)
        await self.page.keyboard.type('机械革命')
        await sleep(self.sleep_time)
        await self.page.click('#J_TSearchForm > div.search-button > button')
        await sleep(self.sleep_time)

    async def crawl(self):
        pattern = compile(r'(.*?)', S)
        repl_pattern = compile(r'<.*?>|\s+')
        for i in range(5):
            # document.body.clientHeight
            height = await self.page.evaluate('document.body.clientHeight')
            scrolled_height = 0
            a = 1 + random()
            t = 1
            # window.scrollTo(width, height)
            while scrolled_height < height:
                scrolled_height = int(1 / 2 * a * t ** 2)  # x=v0*t+1/2*a*t**2,v0=0
                await self.page.evaluate(f'window.scrollTo(0,{scrolled_height})')
                t += 1
            await sleep(self.sleep_time)
            html = await self.page.content()
            results = pattern.findall(html)
            for result in results:
                result = repl_pattern.sub('', result)
                print(result)
            print()
            await sleep(self.sleep_time)
            await self.page.click('#mainsrp-pager > div > div > div > ul > li.item.next > a')
            await sleep(self.sleep_time)
        await sleep(self.sleep_time)


if __name__ == '__main__':
    TaoBaoSpider()