centos上使用Selenium

CentOS + Selenium 用法小结

安装python pip

安装selenium

pip install selenium

安装chrome-browser

wget https://dl.google.com/linux/direct/google-chrome-stable_current_x86_64.rpm --no-check-certificate
sudo yum install google-chrome-stable_current_x86_64.rpm

安装chromedriver：一个用来和chrome交互的接口

sudo yum install chromedriver

安装xvfb xvfb是一个可以将屏幕的图像输出给放到虚拟内存中的东西

sudo yum update
sudo yum install Xvfb

# vi test.py
from selenium import webdriver
from selenium.webdriver.chrome.options import Options

chrome_options = Options()
chrome_options.add_argument('--headless') 
chrome_options.add_argument('--disable-gpu')
chrome_options.add_argument('--no-sandbox')  

driver = webdriver.Chrome(chrome_options=chrome_options)
for i in range(10):
    driver.get("https://www.baidu.com/")
    print(driver.title)
driver.close()

运行
xvfb-run python test.py

这个时候大概率会报错
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: An unknown server-side error occurred while processing the command. Original error: A new session could not be created. Details: session not created: This version of ChromeDriver only supports Chrome version xx
这个是因为chromedriver 和chrome-browser版本不 匹配
google-chrome --version

chromedriver

http://npm.taobao.org/mirrors/chromedriver/
下载对应chromedriver

拷到py同目录，py里不要有中文

from selenium.webdriver import Chrome
from selenium.webdriver.chrome.options import Options

DRIVER_PATH = './chromedriver'


if __name__ == "__main__":
    options = Options()
    print("==========================selenium Test Start==========================")
    options.add_argument('--no-sandbox')
    options.add_argument('--headless')  
    options.add_argument('--disable-gpu')
    driver = Chrome(executable_path=DRIVER_PATH, options=options)
    driver.get("http://xxxxxxxx6:7xxx/")
    print("Title:")
    print(driver.title)
    driver.close()
    driver.quit()
    print("==========================selenium Test Done===========================")

运行
xvfb-run python test.py