首先 从 pip 安装 selenium

pip install selenium

Demo1 : 使用不同Driver 来抓取页面 title

# pip install selenium
__author__ = 'wangshaoxing'
from selenium import webdriver

driverArray=[
     webdriver.Ie()
];

def openBroswer(driver):
    driver.set_window_size(1300,600)
    driver.get("http://www.jd.com")
    print driver.name+":  "+driver.title
    driver.close()
    pass

for  d in driverArray:
    openBroswer(d)
    pass

Demo2: 跳转一次页面 ,并且获得页面内容

__author__ = 'wangshaoxing'
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By

driver = webdriver.Firefox()
driver.get("http://www.jd.com/")
driver.set_window_size(1300,600)

elem = driver.find_element_by_id("key111")
elem.send_keys("iphone")
elem.send_keys(Keys.RETURN)
element = WebDriverWait(driver, 10).until(
        EC.presence_of_element_located((By.ID, "J-global-toolbar"))
    )

fs=open("jd.txt","w")
fs.write(driver.page_source.encode("utf-8"))
fs.close()
driver.close()

Demo3: 与javascript进行交互

__author__ = 'wangshaoxing'
from selenium import webdriver

driver = webdriver.PhantomJS()
driver.set_window_size(1300,600)
driver.get("http://www.jd.com/")
#js_result=driver.execute_script(""" return  $("#logo-2014").offset() """)
js_result=driver.execute_script(""" return  1 """)
print js_result

driver.close()

Demo4: 截取屏幕

__author__ = 'wangshaoxing'
from selenium import webdriver
import time

driver = webdriver.Firefox()
driver.set_window_size(1300,600)
driver.get("http://www.jd.com/")

driver.execute_script("""
 setInterval(function(){
    window.scrollBy(0,100)
},100)
 """)
time.sleep(8)
js_result=driver.execute_script("""
return $("body").height();
 """)
print js_result

driver.save_screenshot("screen.png")
driver.close()

Demo5:截取屏幕并裁切适当区域

__author__ = 'wangshaoxing'
from selenium import webdriver
import sys
from PIL import Image

from selenium.webdriver.common.keys import Keys

driver = webdriver.Chrome()

driver.set_window_size(1300,600)
driver.get("http://www.jd.com/")
driver.save_screenshot("screen1.png")
js_result = driver.execute_script("""

var position=$("#logo-2014").offset();
var width = $("#logo-2014").width();
var height=  $("#logo-2014").parent().height();

var result={
    position:position,
    width:width,
    height:height
}

return result;

 """)

# {u'position': {u'top': 30, u'left': 0}, u'height': 60, u'width': 362}
driver.save_screenshot("screen1.png")
im = Image.open("screen1.png")
box = im.copy()

box = (int(js_result["position"]["left"]),int(js_result["position"]["top"]),int(js_result["width"]+js_result["position"]["left"]),int(js_result["height"]+js_result["position"]["top"]))
region = im.crop(box)
region.save("small1.png")
driver.close()

Demo6:完成一次完整的模拟登陆

#coding=utf-8

__author__ = u'wangshaoxing'
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By
import time
import os

driver = webdriver.PhantomJS()

driver.set_window_size(1300,600)
driver.get(u"https://passport.jd.com/uc/login")

# elem = driver.find_element_by_id("key")
# # elem = driver.find_element_by_id("key1")
# elem.send_keys("iphone")
# elem.send_keys(Keys.RETURN)
element_user = WebDriverWait(driver, 10).until(
        EC.presence_of_element_located((By.ID, u"loginname"))
    )
element_user.clear()
element_user.send_keys(u"wshxbqq1")

element_pwd = WebDriverWait(driver, 10).until(
        EC.presence_of_element_located((By.ID, u"nloginpwd"))
    )
element_pwd.clear()
element_pwd.send_keys(u"13031446049w")

element_btn = WebDriverWait(driver, 10).until(
        EC.presence_of_element_located((By.ID, u"loginsubmit"))
    )
element_btn.click()
time.sleep(2)

driver.save_screenshot("vr.png")

vr=""

while not os.path.exists("vr.txt"):
    print "waitting  for code"
    time.sleep(2)
    pass

f=open("vr.txt","r")
vr=f.read()
f.close()

element_vr = WebDriverWait(driver, 10).until(
        EC.presence_of_element_located((By.ID, u"authcode"))
    )
element_vr.send_keys(vr)

element_btn.click()

time.sleep(2)

driver.get(u"http://cart.jd.com/cart")

# element_test = WebDriverWait(driver, 10).until(
#         EC.presence_of_element_located((By.ID, "service-2014"))
#     )

# driver.get("http://cart.jd.com/cart")
#
# element_test = WebDriverWait(driver, 10).until(
#         EC.presence_of_element_located((By.ID, "service-2014"))
#     )

# fs=open("jd.txt","w")
# fs.write(driver.page_source.encode("utf-8"))
# fs.close()
#driver.close()