一 模块的介绍
selenium模块最开始是一个自动化测试的工具,驱动浏览器完全模拟浏览器自动测试。
from selenium import webdriver # 驱动浏览器 browser=webdriver.Chrome() # 谷歌浏览器 browser=webdriver.Firefox() # 火狐浏览器 browser=webdriver.PhantomJS() # 虚拟浏览器 browser=webdriver.Safari() browser=webdriver.Edge()
二 下载安装
#安装:selenium+chromedriver pip3 install selenium 下载chromdriver.exe放到python安装路径的scripts目录中即可,注意最新版本是2.29,并非2.9 国内镜像网站地址:http://npm.taobao.org/mirrors/chromedriver/2.29/ 最新的版本去官网找:https://sites.google.com/a/chromium.org/chromedriver/downloads #验证安装 C:UsersAdministrator>python3 Python 3.6.1 (v3.6.1:69c0db5, Mar 21 2017, 18:41:36) [MSC v.1900 64 bit (AMD64)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> from selenium import webdriver >>> driver=webdriver.Chrome() #弹出浏览器 >>> driver.get('https://www.baidu.com') >>> driver.page_source #注意: selenium3默认支持的webdriver是Firfox,而Firefox需要安装geckodriver 下载链接:https://github.com/mozilla/geckodriver/releases
#安装:selenium+phantomjs pip3 install selenium 下载phantomjs,解压后把phantomjs.exe所在的bin目录放到环境变量 下载链接:http://phantomjs.org/download.html #验证安装 C:UsersAdministrator>phantomjs phantomjs> console.log('egon gaga') egon gaga undefined phantomjs> ^C C:UsersAdministrator>python3 Python 3.6.1 (v3.6.1:69c0db5, Mar 21 2017, 18:41:36) [MSC v.1900 64 bit (AMD64)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> from selenium import webdriver >>> driver=webdriver.PhantomJS() #无界面浏览器 >>> driver.get('https://www.baidu.com') >>> driver.page_source
三 基本使用
ActionChains:拖动的一些事。
expected_conditions:加载的时间设置
find_element_by_id:id查找的方式。
send_keys:发送查找的关键字
click:点击事件
current_url:获取正在驱动的url
get_cookies:获取cookies信息
page_source:页面源代码
from selenium import webdriver from selenium.webdriver import ActionChains from selenium.webdriver.common.by import By #按照什么方式查找,By.ID,By.CSS_SELECTOR from selenium.webdriver.common.keys import Keys #键盘按键操作 from selenium.webdriver.support import expected_conditions as EC from selenium.webdriver.support.wait import WebDriverWait #等待页面加载某些元素 browser=webdriver.Chrome() try: browser.get('https://www.baidu.com') input_tag=browser.find_element_by_id('kw') input_tag.send_keys('美女') #python2中输入中文错误,字符串前加个u input_tag.send_keys(Keys.ENTER) #输入回车 wait=WebDriverWait(browser,10) wait.until(EC.presence_of_element_located((By.ID,'content_left'))) #等到id为content_left的元素加载完毕,最多等10秒 print(browser.page_source) print(browser.current_url) print(browser.get_cookies()) finally: browser.close()
四 选择器
基本选择器查找:
find_element_by_id:根据ID查找
find_element_by_link_text:通过文本查找
find_element_by_partial_link_text:根据某些文本模糊查找到第一个内容
find_element_by_class_name:通过class查找
find_element_by_name:通过name属性查找
补充:
presence_of_all_elements_located:相对应的所有元素加载完毕过后
presence_of_element_located:查找到第一个加载完毕后
element_to_be_clickable:等待可以点击过后。
By.CLASS_NAME:class查找的方式
get_attribute:访问标签的属性
text:访问文本
tag_name:访问name
# from selenium import webdriver # from selenium.webdriver import ActionChains # from selenium.webdriver.common.by import By #按照什么方式查找,By.ID,By.CSS_SELECTOR # from selenium.webdriver.common.keys import Keys #键盘按键操作 # from selenium.webdriver.support import expected_conditions as EC # from selenium.webdriver.support.wait import WebDriverWait #等待页面加载某些元素 # import time # # try: # ''' # find_element_by_id # find_element_by_name # find_element_by_link_text # find_element_by_partial_link_text # find_element_by_tag_name # find_element_by_class_name # # find_element_by_css_selector # find_element_by_xpath # ''' # driver = webdriver.Chrome() # wait=WebDriverWait(driver,3) # driver.get('https://www.baidu.com/') # # # 1、find_element_by_id # # input_tag=driver.find_element_by_id('kw') # # print(input_tag.tag_name) # # print(input_tag.get_attribute('name')) # # print(input_tag.text) # # # 2、find_element_by_link_text # # login=driver.find_element_by_link_text('登录') # # login.click() # # # 3、find_element_by_partial_link_text # login=driver.find_element_by_partial_link_text('登') # login.click() # # # 4、find_element_by_class_name # # login_for_user=driver.find_element_by_class_name('tang-pass-footerBarULogin') # # login_for_user=wait.until(EC.presence_of_element_located((By.CLASS_NAME,'tang-pass-footerBarULogin'))) # login_for_user=wait.until(EC.element_to_be_clickable((By.CLASS_NAME,'tang-pass-footerBarULogin'))) # # print(login_for_user) # login_for_user.click() # # # #4、find_element_by_name # # input_user=driver.find_element_by_name('userName') # # input_pwd=driver.find_element_by_name('password') # # button=driver.find_element_by_id('TANGRAM__PSP_10__submit') # # # # input_user.send_keys('17094322519') # # input_pwd.send_keys('11111111111') # # button.click() # # # # time.sleep(5) # finally: # driver.close()
以上这些只能够查找出来一个内容,如果想要加载相关的所有内容,将有血查找方式的element改成elements就可以了。如下
find_elements_by_name find_elements_by_xpath find_elements_by_link_text find_elements_by_partial_link_text find_elements_by_tag_name find_elements_by_class_name find_elements_by_css_selector
find_element(s)_by_xpath:如果在没有一个合适定位的方式的时候就可以使用这个
/:单斜杠,查找一个标签,可以从根标签一层一层的向内部查找。
//:双斜杠,从当前页面查找出相对用的所有的标签。
[数字]:确定查找到哪一个标签。
[@属性=“属性值”]:属性的查找方式
[locntains(@属性=“属性值的部分内容”)]:属性模糊查找
//*:所有的标签
[标签/@属性=“属性值”]:查找有这个标签的标签的值
..:两个点,代表的是上一级
#Xpath选择器 from selenium import webdriver from selenium.webdriver import ActionChains from selenium.webdriver.common.by import By # 按照什么方式查找,By.ID,By.CSS_SELECTOR from selenium.webdriver.common.keys import Keys # 键盘按键操作 from selenium.webdriver.support import expected_conditions as EC from selenium.webdriver.support.wait import WebDriverWait # 等待页面加载某些元素 import time try: driver = webdriver.Chrome() # wait = WebDriverWait(driver, 3) driver.implicitly_wait(3) driver.get('https://doc.scrapy.org/en/latest/_static/selectors-sample1.html') #1、//与/ # tag=driver.find_element_by_xpath('/html/body/div/a') # print(tag.tag_name) # print(tag.text) # print(tag.get_attribute('href')) # tag=driver.find_elements_by_xpath('//a') # print(tag) # tag=driver.find_elements_by_xpath('//div//a') # tag=driver.find_elements_by_css_selector('div a') # print(len(tag)) #2、查找第几个 # tag=driver.find_elements_by_xpath('//div//a[5]') # print(tag[0].text) #3、按照属性查找 # tag1=driver.find_element_by_xpath('//a[@href="image4.html"]') # tag2=driver.find_element_by_xpath('//a[4]') # tag3=driver.find_element_by_xpath('//a[contains(@href,"image4")]') # # print(tag1.text) # print(tag2.text) # print(tag3.text) #4、其他 # driver.find_elements_by_xpath('//*[@class="xxxxx"]') # driver.find_elements_by_xpath('//div[@class="xxxxx"][@class="yyyyy"]') # print(driver.find_element_by_xpath('//a[img/@src="image2_thumb.jpg"]').text) # print(driver.find_element_by_xpath('//a/..').tag_name) # print([tag.tag_name for tag in driver.find_elements_by_xpath('//img//..')]) img=driver.find_element_by_xpath('//img') print(img.location) print(img.size) time.sleep(5) finally: driver.close()
五 交互操作
location:坐标,横:x;竖:y
size:大小,也就是内容的长宽
impicitly_wait:隐式等待。
from selenium import webdriver from selenium.webdriver import ActionChains from selenium.webdriver.common.by import By #按照什么方式查找,By.ID,By.CSS_SELECTOR from selenium.webdriver.common.keys import Keys #键盘按键操作 from selenium.webdriver.support import expected_conditions as EC from selenium.webdriver.support.wait import WebDriverWait #等待页面加载某些元素 browser=webdriver.Chrome() #隐式等待:在查找所有元素时,如果尚未被加载,则等10秒 browser.implicitly_wait(10) browser.get('https://www.baidu.com') input_tag=browser.find_element_by_id('kw') input_tag.send_keys('美女') input_tag.send_keys(Keys.ENTER) contents=browser.find_element_by_id('content_left') #没有等待环节而直接查找,找不到则会报错 print(contents) browser.close()
显式等待:
from selenium import webdriver from selenium.webdriver import ActionChains from selenium.webdriver.common.by import By #按照什么方式查找,By.ID,By.CSS_SELECTOR from selenium.webdriver.common.keys import Keys #键盘按键操作 from selenium.webdriver.support import expected_conditions as EC from selenium.webdriver.support.wait import WebDriverWait #等待页面加载某些元素 browser=webdriver.Chrome() browser.get('https://www.baidu.com') input_tag=browser.find_element_by_id('kw') input_tag.send_keys('美女') input_tag.send_keys(Keys.ENTER) #显式等待:显式地等待某个元素被加载 wait=WebDriverWait(browser,10) wait.until(EC.presence_of_element_located((By.ID,'content_left'))) contents=browser.find_element(By.CSS_SELECTOR,'#content_left') print(contents) browser.close()
execute_script:直接写js代码
clear:清空输入框
iframe:在一个页面中嵌套一个页面
switch_to.frame:切换到子页面
awitch_to.parent_frame:切换到父页面
Action chains(浏览器对象):拖动
drag_aand_drop(源,目标):从源拖动到目标
perform():开始执行
click_and_hold:点击不松手
move_by_offset:偏移量
release:松开鼠标
# from selenium import webdriver # from selenium.webdriver import ActionChains # from selenium.webdriver.common.by import By #按照什么方式查找,By.ID,By.CSS_SELECTOR # from selenium.webdriver.common.keys import Keys #键盘按键操作 # from selenium.webdriver.support import expected_conditions as EC # from selenium.webdriver.support.wait import WebDriverWait #等待页面加载某些元素 # import time # # # try: # driver=webdriver.Chrome() # driver.get('https://www.jd.com/') # driver.implicitly_wait(3) # # input_tag=driver.find_element_by_id('key') # input_tag.send_keys('iphoneX') # input_tag.send_keys(Keys.ENTER) # # time.sleep(3) # input_tag = driver.find_element_by_id('key') # input_tag.clear() # input_tag.send_keys('mac pro') # input_tag.send_keys(Keys.ENTER) # # # time.sleep(5) # finally: # driver.close() #ActionChains from selenium import webdriver from selenium.webdriver import ActionChains from selenium.webdriver.common.by import By #按照什么方式查找,By.ID,By.CSS_SELECTOR from selenium.webdriver.common.keys import Keys #键盘按键操作 from selenium.webdriver.support import expected_conditions as EC from selenium.webdriver.support.wait import WebDriverWait #等待页面加载某些元素 import time try: driver=webdriver.Chrome() driver.get('http://www.runoob.com/try/try.php?filename=jqueryui-api-droppable') driver.implicitly_wait(3) driver.execute_script('alert("hahha")') # driver.switch_to.frame('iframeResult') # driver.switch_to.parent_frame() # 方式一:基于一条链,从头一下移动到尾部 # source = driver.find_element_by_id('draggable') # target = driver.find_element_by_id('droppable') # actions=ActionChains(driver) # actions.drag_and_drop(source,target) # actions.perform() # 方式二:基于不同ActionChains,可以控制移动的位移 # source = driver.find_element_by_id('draggable') # target = driver.find_element_by_id('droppable') # distance=target.location['x'] - source.location['x'] # # ActionChains(driver).click_and_hold(source).perform() # ActionChains(driver).move_by_offset(xoffset=distance,yoffset=0).perform() # ActionChains(driver).release().perform() # # res=0 # while res < distance: # ActionChains(driver).move_by_offset(xoffset=1,yoffset=0).perform() # res+=1 # ActionChains(driver).release().perform() # time.sleep(5) finally: driver.close()
六 浏览器的前进和后退:
back:后退
forword:前进
#浏览器的前进后退 # import time # from selenium import webdriver # # browser=webdriver.Chrome() # browser.get('https://www.baidu.com') # browser.get('https://www.taobao.com') # browser.get('http://www.python.org/') # # time.sleep(3) # browser.back() # time.sleep(3) # browser.forward() # browser.close()
七 cookies
get_cookies:获取cookies里面的信息。
#cookies from selenium import webdriver browser=webdriver.Chrome() browser.get('https://www.zhihu.com/explore') print(browser.get_cookies()) browser.add_cookie({'k1':'xxx','k2':'yyy'}) print(browser.get_cookies()) # browser.delete_all_cookies()
八 异常处理
from selenium import webdriver from selenium.common.exceptions import TimeoutException,NoSuchElementException,NoSuchFrameException try: browser=webdriver.Chrome() browser.get('http://www.runoob.com/try/try.php?filename=jqueryui-api-droppable') browser.switch_to.frame('iframssseResult') except TimeoutException as e: print(e) except NoSuchFrameException as e: print(e) finally: browser.close()
九 选项卡管理
#选项卡管理:切换选项卡,有js的方式windows.open,有windows快捷键:ctrl+t等,最通用的就是js的方式 import time from selenium import webdriver browser=webdriver.Chrome() browser.get('https://www.baidu.com') browser.execute_script('window.open()') print(browser.window_handles) #获取所有的选项卡 browser.switch_to.window(browser.window_handles[1]) browser.get('https://www.taobao.com') time.sleep(10) browser.switch_to.window(browser.window_handles[0]) browser.get('https://www.sina.com.cn') browser.close()
十 练习
#注意:网站都策略都是在不断变化的,精髓在于学习流程。下述代码生效与2017-11-7,不能保证永久有效 from selenium import webdriver from selenium.webdriver import ActionChains from selenium.webdriver.common.by import By from selenium.webdriver.common.keys import Keys from selenium.webdriver.support import expected_conditions as EC from selenium.webdriver.support.wait import WebDriverWait browser=webdriver.Chrome() try: browser.get('http://mail.163.com/') wait=WebDriverWait(browser,5) frame=wait.until(EC.presence_of_element_located((By.ID,'x-URS-iframe'))) browser.switch_to.frame(frame) wait.until(EC.presence_of_element_located((By.CSS_SELECTOR,'.m-container'))) inp_user=browser.find_element_by_name('email') inp_pwd=browser.find_element_by_name('password') button=browser.find_element_by_id('dologin') inp_user.send_keys('18611453110') inp_pwd.send_keys('xxxx') button.click() #如果遇到验证码,可以把下面一小段打开注释 # import time # time.sleep(10) # button = browser.find_element_by_id('dologin') # button.click() wait.until(EC.presence_of_element_located((By.ID,'dvNavTop'))) write_msg=browser.find_elements_by_css_selector('#dvNavTop li')[1] #获取第二个li标签就是“写信”了 write_msg.click() wait.until(EC.presence_of_element_located((By.CLASS_NAME,'tH0'))) recv_man=browser.find_element_by_class_name('nui-editableAddr-ipt') title=browser.find_element_by_css_selector('.dG0 .nui-ipt-input') recv_man.send_keys('378533872@qq.com') title.send_keys('圣旨') print(title.tag_name) frame=wait.until(EC.presence_of_element_located((By.CLASS_NAME,'APP-editor-iframe'))) browser.switch_to.frame(frame) body=browser.find_element(By.CSS_SELECTOR,'body') body.send_keys('egon很帅,可以加工资了') browser.switch_to.parent_frame() #切回他爹 send_button=browser.find_element_by_class_name('nui-toolbar-item') send_button.click() #可以睡时间久一点别让浏览器关掉,看看发送成功没有 import time time.sleep(10000) except Exception as e: print(e) finally: browser.close()
from selenium import webdriver from selenium.webdriver import ActionChains from selenium.webdriver.common.by import By #按照什么方式查找,By.ID,By.CSS_SELECTOR from selenium.webdriver.common.keys import Keys #键盘按键操作 from selenium.webdriver.support import expected_conditions as EC from selenium.webdriver.support.wait import WebDriverWait #等待页面加载某些元素 import time def get_goods(driver): try: goods=driver.find_elements_by_class_name('gl-item') for good in goods: detail_url=good.find_element_by_tag_name('a').get_attribute('href') p_name=good.find_element_by_css_selector('.p-name em').text.replace(' ','') price=good.find_element_by_css_selector('.p-price i').text p_commit=good.find_element_by_css_selector('.p-commit a').text msg = ''' 商品 : %s 链接 : %s 价钱 :%s 评论 :%s ''' % (p_name,detail_url,price,p_commit) print(msg,end=' ') button=driver.find_element_by_partial_link_text('下一页') button.click() time.sleep(1) get_goods(driver) except Exception: pass def spider(url,keyword): driver = webdriver.Chrome() driver.get(url) driver.implicitly_wait(3) # 使用隐式等待 try: input_tag=driver.find_element_by_id('key') input_tag.send_keys(keyword) input_tag.send_keys(Keys.ENTER) get_goods(driver) finally: driver.close() if __name__ == '__main__': spider('https://www.jd.com/',keyword='iPhone8手机')
#coding=utf-8 from selenium import webdriver # from selenium import fire from selenium.webdriver.common.keys import Keys import re from selenium.webdriver.support.ui import Select import time from pyquery import PyQuery as pq from xlwt import * import calendar from collections import OrderedDict def openurl(num): browser = webdriver.Chrome(executable_path=r"H:chromedriver_win32chromedriver.exe") browser.get("https://finsix.com/#section-compatibility") html = browser.page_source # 获取网站源码 data = browser.page_source # str() 函数将对象转化为适于人阅读的形式。 lis = [['product','version','title','status','tags','info']] re_rule_1 = r'<select class="section-compatibility__manufacturers select2-hidden-accessible" tabindex="-1" aria-hidden="true">(.*?)</select>' data_list = re.findall(re_rule_1,data, re.S) data = data_list[0] re_rule = r'<option value=".*?">(.*?)</option>' datalist = re.findall(re_rule, data, re.S) print datalist for i in range(1, len(datalist)): try: browser.find_element_by_class_name('select2-selection__arrow').click() except : browser.find_element_by_class_name('section-compatibility__message__close').click() browser.find_element_by_class_name('select2-selection__arrow').click() s1 = Select(browser.find_element_by_class_name('section-compatibility__manufacturers')) s2 = s1.options[i] # s1.select_by_index(i) s3= s2.text print s3 s2.click() try: browser.find_element_by_class_name('select2-selection__arrow').click() except : browser.find_element_by_class_name('section-compatibility__message__close').click() browser.find_element_by_class_name('select2-selection__arrow').click() s2.click() browser.find_element_by_class_name('select2-selection__arrow').click() time.sleep(2) rule1 = r'<select class="section-compatibility__models select2-hidden-accessible" tabindex="-1" aria-hidden="true">(.*?)</select>' data = browser.page_source if '<select class="section-compatibility__models select2-hidden-accessible" tabindex="-1" aria-hidden="true">' not in data: rule1 = '<select class="section-compatibility__models select2-hidden-accessible" disabled="" tabindex="-1" aria-hidden="true">(.*?)</select>' bullish = re.findall(rule1,data , re.S) # print len(bullish),bullish if len(bullish)>0: bullish = bullish[0] else: print len(bullish), bullish lis.append([s3,'','','','','']) continue re_rule = r'<option value=".*?">(.*?)</option>' bullish = re.findall(re_rule, bullish, re.S) print bullish for j in range(0,len(bullish)): btn = browser.find_elements_by_class_name('select2-selection') try: btn[1].click() except : try: browser.find_element_by_class_name('section-compatibility__message__close').click() btn[1].click() except: # btn[1].click() browser.find_element_by_class_name('section-compatibility__message__close').click() btn[1].click() s4=Select(browser.find_element_by_class_name('section-compatibility__models')) s5 = s4.options[j] s6=s5.text print s6 s5.click() try: btn[1].click() except: try: browser.find_element_by_class_name('section-compatibility__message__close').click() btn[1].click() except: hdata = browser.page_source try: t = browser.find_element_by_class_name('section-compatibility__message__title').text except: t = '' print t b1 = r'<div class="section-compatibility__message__tip"> <strong>(.*?): </strong><span>(.*?)</span> </div>' bk = re.findall(b1, hdata, re.S) print bk try: status = bk[0][0] except: status = '' try: tag = bk[0][1] except: tag = '' # i1 = r'<div class="section-compatibility__message__body"><p>(.*?)</p>.*?</div>' # info = re.findall(i1,hdata,re.S) try: info = browser.find_element_by_class_name( 'section-compatibility__message__body').find_element_by_tag_name('p').text except: info = '' print info lis.append([s3, s6, t, status, tag, info]) continue hdata = browser.page_source try: t = browser.find_element_by_class_name('section-compatibility__message__title').text except: t='' print t b1 = r'<div class="section-compatibility__message__tip"> <strong>(.*?): </strong><span>(.*?)</span> </div>' bk = re.findall(b1,hdata,re.S) print bk try: status = bk[0][0] except:status='' try: tag = bk[0][1] except:tag='' # i1 = r'<div class="section-compatibility__message__body"><p>(.*?)</p>.*?</div>' # info = re.findall(i1,hdata,re.S) try: info = browser.find_element_by_class_name('section-compatibility__message__body').find_element_by_tag_name('p').text except:info='' print info lis.append([s3,s6,t,status, tag,info]) try: browser.find_element_by_class_name('section-compatibility__message__close').click() except: # btn[1].click() try: browser.find_element_by_class_name('section-compatibility__message__close').click() except: try: btn[1].click() s5.click() btn[1].click() browser.find_element_by_class_name('section-compatibility__message__close').click() except: continue return lis def zhizuo(lis): file = Workbook(encoding='utf-8') table = file.add_sheet('data') for i, p in enumerate(lis): for j, q in enumerate(p): table.write(i, j, q) file.save( 'product_info.csv') return 'success' url = 'https://www.xuangubao.cn/' lis = openurl(3) print(lis) zhizuo(lis) # f=open("F:\text.txt","a") # for key,values in dict.items(): # f.write((key+" ")) # print(key,values) # f.close()
破解滑动验证:
http://www.cnblogs.com/fangjie0410/p/8269219.html