selenium的实际使用

1.标签页的切换

#获取当前所有的窗口

cur=driver.window_handles

#根据窗口索引进行切换

driver.switch_to.window(cur[1])

from selenium import webdriverimport timedriver = webdriver.Chrome()driver.get('http://www.baidu.com')time.sleep(1)ele=driver.find_element_by_id('kw')ele.send_keys('九歌‘）time.sleep(2)driver.find_element_by_id('su').click()time.sleep(2)#通过执行js来新开一个标签页js='window.open("https://www.sougou.com")'driver.execute_script(js)time.sleep(1)#获取所有的窗口windows=driver.window_handles#根据索引进行切换driver.switch_to.window(window[0])time.sleep(2)driver.switch_to.window(window[1])time.sleep(2)driver.quit()

#2.页面滚动

driver = webdriver.Chrome()driver.get('http://www.baidu.com')time.sleep(1)ele=driver.find_element_by_id('kw')ele.send_keys('九歌‘）time.sleep(1)driver.find_element_by_id('su').click()time.sleep(2)//滚动到底部#js='document.documentElement.scrollTop=8000'//滚动部分js='window.scrollTop(0,700)' # 700像素driver.execute_script(js)time.sleep(2)driver.quit()

#3.京东图书

url=' '

#价格：//*[@id="]_goodsLists"]/ul/li[*]/div/div[2]/strong/i

#标题：//div[@class="p-name"]/a/em/text()

driver=webdriver.Chrome()

driver.get(url)

time.sleep(2)

data=driver.page_source

html=etree.HTML(data)
#标题

title=html.xpath('//div[@class="p-name"]/a/em/text()')

print(title)

#价格

price=html.xpath('//*[@id="]_goodsLists"]/ul/li[*]/div/div[2]/strong/i')

print(price)

driver.quit()

n=0

for t in title:

dic={}

dic['title']=t

dic['price']=price[n]

n+=1

print(dic)