python爬虫开发之selenium模块详细使用方法与实例全解

from selenium import webdriver
#webdriver可以认为是浏览器的驱动器，要驱动浏览器必须用到webdriver，支持多种浏览器，这里以Chrome为例
browser = webdriver.Chrome()

from selenium import webdriver
browser = webdriver.Chrome()
browser.get('https://www.taobao.com')
print(browser.page_source)#browser.page_source是获取网页的全部html
browser.close()

from selenium import webdriver
browser = webdriver.Chrome()
browser.get('https://www.jb51.net')
input_first = browser.find_element_by_id('q')
input_second = browser.find_element_by_css_selector('#q')
input_third = browser.find_element_by_xpath('//*[@id="q"]')
print(input_first,input_second,input_third)
browser.close()

from selenium import webdriver
from selenium.webdriver.common.by import By
browser = webdriver.Chrome()
browser.get('https://www.jb51.net')
input_first = browser.find_element(BY.ID,'q')#第一个参数传入名称，第二个传入具体的参数
print(input_first)
browser.close()

from selenium import webdriver
import time
browser = webdriver.Chrome()
browser.get('https://www.jb51.net')
input = browser.find_element_by_id('q')#找到搜索框
input.send_keys('iPhone')#传送入关键词
time.sleep(5)
input.clear()#清空搜索框
input.send_keys('男士内裤')
button = browser.find_element_by_class_name('btn-search')#找到搜索按钮
button.click()

from selenium import webdriver
from selenium.webdriver import ActionChains#引入动作链
browser = webdriver.Chrome()
url = '//www.jb51.net/try/try.php?filename=jqueryui-api-droppable'
browser.get(url)
browser.switch_to.frame('iframeResult')#切换到iframeResult框架
source = browser.find_element_by_css_selector('#draggable')#找到被拖拽对象
target = browser.find_element_by_css_selector('#droppable')#找到目标
actions = ActionChains(browser)#声明actions对象
actions.drag_and_drop(source, target)
actions.perform()#执行动作

from selenium import webdriver
browser = webdriver.Chrome()
browser.get('https://www.jb51.net/explore')
browser.execute_script('window.scrollTo(0, document.body.scrollHeight)')
browser.execute_script('alert("To Bottom")')

from selenium import webdriver
from selenium.webdriver import ActionChains
browser = webdriver.Chrome()
url = 'https://www.jb51.net/explore'
browser.get(url)
logo = browser.find_element_by_id('zh-top-link-logo')#获取网站logo
print(logo)
print(logo.get_attribute('class'))
browser.close()

from selenium import webdriver
browser = webdriver.Chrome()
url = 'https://www.jb51.net/explore'
browser.get(url)
input = browser.find_element_by_class_name('zu-top-add-question')
print(input.text)#input.text文本值
browser.close()

from selenium import webdriver
browser = webdriver.Chrome()
url = 'https://www.jb51.net/explore'
browser.get(url)
input = browser.find_element_by_class_name('zu-top-add-question')
print(input.id)#获取id
print(input.location)#获取位置
print(input.tag_name)#获取标签名
print(input.size)#获取大小
browser.close()

from selenium import webdriver
from selenium.common.exceptions import NoSuchElementException
browser = webdriver.Chrome()
url = '//www.jb51.net/try/try.php?filename=jqueryui-api-droppable'
browser.get(url)
browser.switch_to.frame('iframeResult')
source = browser.find_element_by_css_selector('#draggable')
print(source)
try:
  logo = browser.find_element_by_class_name('logo')
except NoSuchElementException:
  print('NO LOGO')
browser.switch_to.parent_frame()
logo = browser.find_element_by_class_name('logo')
print(logo)
print(logo.text)

from selenium import webdriver
browser = webdriver.Chrome()
browser.implicitly_wait(10)#等待十秒加载不出来就会抛出异常，10秒内加载出来正常返回
browser.get('https://www.jb51.net/explore')
input = browser.find_element_by_class_name('zu-top-add-question')
print(input)

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
browser = webdriver.Chrome()
browser.get('https://www.jb51.net/')
wait = WebDriverWait(browser, 10)
input = wait.until(EC.presence_of_element_located((By.ID, 'q')))
button = wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR, '.btn-search')))
print(input, button)

import time
from selenium import webdriver
browser = webdriver.Chrome()
browser.get('https://www.jb51.net/')
browser.get('https://www.jb51.net/')
browser.get('https://www.jb51.net/')
browser.back()
time.sleep(1)
browser.forward()
browser.close()

from selenium import webdriver
browser = webdriver.Chrome()
browser.get('https://www.jb51.net/explore')
print(browser.get_cookies())
browser.add_cookie({'name': 'name', 'domain': 'www.jb51.net', 'value': 'germey'})
print(browser.get_cookies())
browser.delete_all_cookies()
print(browser.get_cookies())

import time
from selenium import webdriver
browser = webdriver.Chrome()
browser.get('https://www.jb51.net')
browser.execute_script('window.open()')
print(browser.window_handles)
browser.switch_to_window(browser.window_handles[1])
browser.get('https://www.jb51.net')
time.sleep(1)
browser.switch_to_window(browser.window_handles[0])
browser.get('//www.jb51.net')

from selenium import webdriver
browser = webdriver.Chrome()
browser.get('https://www.jb51.net')
browser.find_element_by_id('hello')
from selenium import webdriver
from selenium.common.exceptions import TimeoutException, NoSuchElementException
browser = webdriver.Chrome()
try:
  browser.get('https://www.jb51.net')
except TimeoutException:
  print('Time Out')
try:
  browser.find_element_by_id('hello')
except NoSuchElementException:
  print('No Element')
finally:
  browser.close()