python爬虫系列Selenium定向爬取虎扑篮球图片详解

前言：

作为一名从小就看篮球的球迷，会经常逛虎扑篮球及湿乎乎等论坛，在论坛里面会存在很多精美图片，包括NBA球队、CBA明星、花边新闻、球鞋美女等等，如果一张张右键另存为的话真是手都点疼了。作为程序员还是写个程序来进行吧！

所以我通过Python+Selenium+正则表达式+urllib2进行海量图片爬取。

运行效果：

 http://photo.hupu.com/nba/tag/马刺

http://photo.hupu.com/nba/tag/陈露

源代码：

# -*- coding: utf-8 -*- """ Crawling pictures by selenium and urlliburl: 虎扑 马刺 http://photo.hupu.com/nba/tag/%E9%A9%AC%E5%88%BAurl: 虎扑 陈露 http://photo.hupu.com/nba/tag/%E9%99%88%E9%9C%B2Created on 2015-10-24@author: Eastmount CSDN """  import time   import re   import os import sys import urllib import shutil import datetime from selenium import webdriver  from selenium.webdriver.common.keys import Keys  import selenium.webdriver.support.ui as ui  from selenium.webdriver.common.action_chains import ActionChains  #Open PhantomJS driver = webdriver.PhantomJS(executable_path="G:/phantomjs-1.9.1-windows/phantomjs.exe")#driver = webdriver.Firefox() wait = ui.WebDriverWait(driver,10)  #Download one Picture By urllib def loadPicture(pic_url, pic_path):  pic_name = os.path.basename(pic_url) #删除路径获取图片名字 pic_name = pic_name.replace('*','') #去除'*' 防止错误 invalid mode ('wb') or filename urllib.urlretrieve(pic_url, pic_path + pic_name)  #爬取具体的图片及下一张def getScript(elem_url, path, nums): try:  #由于链接 http://photo.hupu.com/nba/p29556-1.html  #只需拼接 http://..../p29556-数字.html 省略了自动点击"下一张"操作  count = 1  t = elem_url.find(r'.html')  while (count <= nums):   html_url = elem_url[:t] + '-' + str(count) + '.html'   #print html_url   '''   driver_pic.get(html_url)   elem = driver_pic.find_element_by_xpath("//div[@class='pic_bg']/div/img")   url = elem.get_attribute("src")   '''   #采用正则表达式获取第3个<div></div> 再获取图片URL进行下载   content = urllib.urlopen(html_url).read()   start = content.find(r'<div class="flTab">')   end = content.find(r'<div class="comMark" style>')   content = content[start:end]   div_pat = r'<div.*?>(.*?)<//div>'   div_m = re.findall(div_pat, content, re.S|re.M)   #print div_m[2]   link_list = re.findall(r"(?<=href=/").+?(?=/")|(?<=href=/').+?(?=/')", div_m[2])   #print link_list   url = link_list[0] #仅仅一条url链接   loadPicture(url, path)   count = count + 1 except Exception,e:   print 'Error:',e  finally:   print 'Download ' + str(count) + ' pictures/n'    #爬取主页图片集的URL和主题 def getTitle(url):  try:   #爬取URL和标题   count = 0   print 'Function getTitle(key,url)'   driver.get(url)   wait.until(lambda driver: driver.find_element_by_xpath("//div[@class='piclist3']"))  print 'Title: ' + driver.title + '/n'    #缩略图片url(此处无用) 图片数量 标题(文件名) 注意顺序  elem_url = driver.find_elements_by_xpath("//a[@class='ku']/img")  elem_num = driver.find_elements_by_xpath("//div[@class='piclist3']/table/tbody/tr/td/dl/dd[1]")  elem_title = driver.find_elements_by_xpath("//div[@class='piclist3']/table/tbody/tr/td/dl/dt/a")  for url in elem_url:    pic_url = url.get_attribute("src")   html_url = elem_title[count].get_attribute("href")   print elem_title[count].text   print html_url    print pic_url   print elem_num[count].text      #创建图片文件夹   path = "E://Picture_HP//" + elem_title[count].text + "//"   m = re.findall(r'(/w*[0-9]+)/w*', elem_num[count].text) #爬虫图片张数   nums = int(m[0])   count = count + 1    if os.path.isfile(path):   #Delete file     os.remove(path)    elif os.path.isdir(path):  #Delete dir     shutil.rmtree(path, True)    os.makedirs(path)    #create the file directory    getScript(html_url, path, nums) #visit pages      except Exception,e:   print 'Error:',e  finally:   print 'Find ' + str(count) + ' pages with key/n'   #Enter Function def main():  #Create Folder  basePathDirectory = "E://Picture_HP"  if not os.path.exists(basePathDirectory):   os.makedirs(basePathDirectory)   #Input the Key for search str=>unicode=>utf-8  key = raw_input("Please input a key: ").decode(sys.stdin.encoding)  print 'The key is : ' + key   #Set URL List Sum:1-2 Pages  print 'Ready to start the Download!!!/n/n'  starttime = datetime.datetime.now()  num=1  while num<=1:  #url = 'http://photo.hupu.com/nba/tag/%E9%99%88%E9%9C%B2?p=2&o=1'  url = 'http://photo.hupu.com/nba/tag/%E9%A9%AC%E5%88%BA'    print '第'+str(num)+'页','url:'+url   #Determine whether the title contains key   getTitle(url)   time.sleep(2)   num = num + 1  else:   print 'Download Over!!!'   #get the runtime  endtime = datetime.datetime.now()  print 'The Running time : ',(endtime - starttime).seconds    main()