selenium +chrome headless Adhoc模式渲染网页

mannual和adhoc模式比较

Manual vs. Adhoc

In the script above, we start the ChromeDriver server process when we create the WebDriver object and it is terminated when we call quit(). For a one-off script, that isn’t a problem, but this can waste a nontrivial amount of time for a large test suite that creates a ChromeDriver instance for each test. Luckily, we can manually start and stop the server ourselves, and it only requires a few changes to the script above.

说的在使用selenium+chromeheadless做自动化测试时候，如果测试用例数量大，给每个测试用例启动一个浏览器要话费更多的时间。

#coding=utf8
import os,traceback
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.chrome.options import Options

service = webdriver.chrome.service.Service('/home/xxxx/Downloads/phantomjs-2.1.1-linux-x86_64/bin/chromedriver')
service.start()
class ChromeHeadless(object):

    def __init__(self):

        chrome_options = Options()
        chrome_options.add_argument("--headless")
        chrome_options.add_argument('--disable-gpu')
        chrome_options.add_argument('--disable-images')
        chrome_options.add_argument('--disable-plugins')
        chrome_options.binary_location = '/opt/google/chrome/chrome'
        #prefs = {"profile.managed_default_content_settings.images": 2}  # 关图片
        #chrome_options.add_experimental_option("prefs", prefs)
        self.chrome_options=chrome_options
        self.driver = webdriver.Remote(service.service_url,desired_capabilities=self.chrome_options.to_capabilities())
        self.driver.set_page_load_timeout(120)

    def fun(self,url):

            try:
                proxy_http_list = list(r.smembers('kuaidaili:http')) + list(r.smembers('zhima'))
                pr=random.choice(proxy_http_list)
                self.chrome_options.add_argument('--proxy-server=%s'%pr)    #设置代理
                self.driver.start_session(self.chrome_options.to_capabilities())
                #print self.driver.session_id  
                self.driver.get(url)

            except Exception,e:

                print '\033[7;32;0m%s\033[0m' %traceback.format_exc()