python登录并爬取淘宝信息代码示例

#!/usr/bin/env python 
# -*- coding:utf-8 -*- 
from selenium import webdriver 
import time 
import datetime 
import traceback 
import logging 
import os 
from selenium.webdriver.common.action_chains import ActionChains 
import codecs 
#登录 
def login(driver,site): 
 driver.get(site) 
 time.sleep(5) 
 try: 
  #点击请登录 
  driver.find_element_by_class_name("h").click() 
  time.sleep(5) 
  #输入账号和密码 
  driver.find_element_by_id("TPL_username_1").send_keys(u"yourusername") 
  time.sleep(5) 
  #print driver.find_element_by_id("TPL_username_1") 
  driver.find_element_by_id("TPL_password_1").send_keys(u"yourpsd") 
  time.sleep(5) 
 
  #点击登录 
  driver.find_element_by_id("J_SubmitStatic").click() 
  time.sleep(30) 
 except: 
  print u"failure" 
def crawlmarket(driver,filename,site): 
 #driver = webdriver.Firefox() 
 driver.get(site) 
 driver.maximize_window() 
 time.sleep(10) 
 driver.refresh() 
 time.sleep(10) 
 test = driver.find_elements_by_xpath("//a[@class='J_ItemLink']") 
 #是否获取到消息,若无则登录 
 if len(test)==0: 
  login(driver,site) 
 time.sleep(30) 
 resultstrall="" 
 resultstr="" 
 strinfo ="" 
 for i in range(0,len(test),1): 
  if test[i].text != "" : 
   resultstr = test[i].text.strip()+'\n' 
   print resultstr 
   resultstrall += resultstr 
 #是否成功抓取 
 if resultstrall !="": 
  f = codecs.open(filename,'w','utf-8') 
  f.write(resultstrall) 
  f.close() 
 #若没有成功抓取将网站写入error 
 else: 
  strinfo = filename+","+site 
  print strinfo 
  ferror = codecs.open("error.txt",'a','utf-8') 
  ferror.write(strinfo) 
  ferror.close() 
 driver.quit() 

def crawltaobaosousuo(driver,filename,site): 
 #driver = webdriver.Firefox() 
 driver.get(site) 
 driver.maximize_window() 
 time.sleep(10) 
 driver.get(site) 
 time.sleep(30) 
 driver.refresh() 
 test = driver.find_elements_by_xpath("//a[@class='J_ClickStat']") 
 resultstrall="" 
 resultstr="" 
 strinfo ="" 
 for i in range(0,len(test),1): 
  if test[i].text != "" : 
   resultstr = test[i].text.strip()+'\n' 
   print resultstr 
   resultstrall += resultstr 
 if resultstrall !="": 
  f = codecs.open(filename,'w','utf-8') 
  f.write(resultstrall) 
  f.close() 
 else: 
  strinfo = filename+","+site 
  print strinfo 
  ferror = codecs.open("error.txt",'a','utf-8') 
  ferror.write(strinfo) 
  ferror.close() 
 driver.quit() 
def jiexi(driver): 
 f = open("1.txt","r") 
 for line in f: 
  time.sleep(60) 
  info = line.split(",") 
  href = info[1] 
  filename = info[0].decode("utf-8") 
  print filename 
  if "markets" in href: 
   crawlmarket(driver,filename,href) 
  else: 
   crawltaobaosousuo(driver,filename,href) 
if __name__ =='__main__': 
 driver = webdriver.Firefox() 
 jiexi(driver)