利用js代码滚动 存储图片

• 这里用到了 自动化和 js滚动

import time

import requests
import random
from selenium import webdriver
from lxml import etree

browser = webdriver.Chrome('./chromedriver.exe')
browser.get('http://image.baidu.com/')

input_bag = browser.find_element_by_id('kw')
sousuo_bag = browser.find_element_by_class_name('s_search')
input_bag.send_keys('乔碧萝')
sousuo_bag.click()

for times in range(3):
    js = 'window.scrollTo(0,document.body.scrollHeight)'
    browser.execute_script(js)
    time.sleep(5)

# 获取html代码，从中解析出下载链接
html = browser.page_source    # html是一个字符串类型
# 数据解析
tree = etree.HTML(html)
img_link = tree.xpath('//li[@class="imgitem"]/@data-objurl')
for link in img_link:
    content = requests.get(link).content
    name = link.split('/')[-1]
    with open('./img/%s.jpg'% random.randint(1,500) ,'wb') as f:
        f.write(content)