selenium爬虫driver的选择
由于chrome速度快，因此很早便使用chrome driver淘汰了ie driver和phantomjs driver。最近的抓取工作出现了一个令人头疼的事情，单开一个driver做while1循环，每隔5分钟扫描抓取目标对象。然而chrome driver总是会在4~5个小时僵死掉。我做了性能和时间的记录：
turn 1:硕博家园2016-1-6 16:45:00mem 1.45gb2016-1-6 17:06:45mem 1.43gbchrome 38,000k2016-1-6 17:14:14turn 2:考研版块2016-1-6 17:19:14mem 1.43gbchrome 53,780k2016-1-6 17:28:17mem 1.32gbchrome 49,672kturn 3:xxxx2016-1-6 17:33:14mem 1.33gbchrome 56,000k2016-1-6 17:35:30mem 1.33gbchrome 55,728kturn 4:lunwentougao2016-1-6 17:33:14mem 1.33gbchrome 56,000k2016-1-6 17:28:17mem 1.32gbchrome 49,672k------------------------------------------2016-01-11 13:26:562016-01-11 17:20:4222:23:3002:22:282016-01-12 06:50:122016-01-12 11:30:372016-01-12 13:13:282016-01-12 18:05:44 所以，我打算重新换个driver试试，到官网的download页面下（www.seleniumhq.org/download/），能够看到现在陆续出现了更多浏览器的drvier，包括opera、edge等。
我下载的是firefox。当然必须首先在服务器上安装好完整的firefox浏览器。然后可以在python中简单调用。capabilities我还不太会用，所以注销了：
from selenium import webdriver
from selenium.webdriver.common.desired_capabilities import desiredcapabilities
#driver = webdriver.chrome('c:\python27\scripts\chromedriver')
#firefox_capabilities = desiredcapabilities.firefox
#firefox_capabilities['marionette'] = true
#firefox_capabilities['binary'] = u'c:\python27\scripts'
#driver = webdriver.firefox(capabilities=firefox_capabilities)
driver = webdriver.firefox() 经过一晚的测试，发现效果不错，没有什么问题，机器一直在正确的轨道上运行着：
python 2.7.11 (v2.7.11:6d1b6a68f775, dec 5 2015, 20:32:19) [msc v.1500 32 bit (intel)] on win32type copyright, credits or license() for more information.>>>================== restart: c:\datascrawl\ccnu_hf\ccnuhf.py ==================2016-01-12 19:27:252016-01-12 19:27:452016-01-12 19:28:472016-01-12 19:29:472016-01-12 19:30:092016-01-12 19:30:312016-01-12 19:30:532016-01-12 19:31:15again_______________________:2016-01-12 19:36:152016-01-12 19:36:372016-01-12 19:36:572016-01-12 19:37:382016-01-12 19:38:002016-01-12 19:38:222016-01-12 19:38:442016-01-12 19:39:062016-01-12 19:39:26again_______________________:2016-01-12 19:44:262016-01-12 19:44:482016-01-12 19:45:082016-01-12 19:45:302016-01-12 19:46:112016-01-12 19:46:332016-01-12 19:46:552016-01-12 19:47:172016-01-12 19:47:39again_______________________:2016-01-12 19:52:392016-01-12 19:53:202016-01-12 19:53:402016-01-12 19:54:022016-01-12 19:54:242016-01-12 19:54:462016-01-12 19:55:462016-01-12 19:56:082016-01-12 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so，写这篇博文其实可以总结为一句话：driver建议用firefox。
http://www.bkjia.com/phpjc/1090822.htmlwww.bkjia.comtruehttp://www.bkjia.com/phpjc/1090822.htmltecharticleselenium爬虫driver的选择 由于chrome速度快，因此很早便使用chrome driver淘汰了ie driver和phantomjs driver。最近的抓取工作出现了一个令人头疼的事...