前言：
上一篇文章Python|爬虫和测试|selenium框架的安装和初步使用（一）_晚风_END的博客-CSDN博客 大概介绍了一下selenium的安装和初步使用，主要是打开某个网站的主页，基本是最基础的东西，那么，这篇文章里就写一点更加深入的东西吧。

主要是介绍比如，selenium网页刷新，模拟登录csdn，元素定位等等内容

一，

无头浏览器

什么是无头浏览器呢？其实就是selenium后台启动一个浏览器，该浏览器看不到，以节约测试用机的资源。

options.add_argument("headless")主要是这个，其次是截图，截图保存在了d盘，否则不知道是否确实运行了

#codding=utf-8
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.common.by import By
import time
options = Options()
options.binary_location = "C:\\Users\\Administrator\\Desktop\\chrome\\Chrome-bin\\chrome.exe"
options.add_experimental_option("detach", True)
options.add_argument("headless")
path=Service('f:\\chromedriver.exe')
driver = webdriver.Chrome(options=options,service=path)
# 截图预览

driver.get("https://www.csdn.net")
driver.get_screenshot_as_file('d:\\截图.png')

 

 

二，

刷新页面

关闭无头，以在前台观察是否确实刷新，增加刷新代码，主要是driver.refresh()方法

#codding=utf-8
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.common.by import By
import time
options = Options()
options.binary_location = "C:\\Users\\Administrator\\Desktop\\chrome\\Chrome-bin\\chrome.exe"
options.add_experimental_option("detach", True)
#options.add_argument("headless")
path=Service('f:\\chromedriver.exe')
driver = webdriver.Chrome(options=options,service=path)
# 截图预览

driver.get("https://www.csdn.net")
time.sleep(2)


driver.get_screenshot_as_file('d:\\截图.png')
try:
    # 刷新页面
    driver.refresh()  
    print('刷新页面')
except Exception as e:
    print('刷新失败')

执行完毕后，cmd的截图：

表明确实刷新了页面

 三，

csdn首页输入框输入指定字符

 

#codding=utf-8
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.common.by import By
import time
options = Options()
options.binary_location = "C:\\Users\\Administrator\\Desktop\\chrome\\Chrome-bin\\chrome.exe"
options.add_experimental_option("detach", True)
#options.add_argument("headless")
path=Service('f:\\chromedriver.exe')
driver = webdriver.Chrome(options=options,service=path)
# 截图预览

driver.get("https://www.csdn.net")
time.sleep(2)


driver.get_screenshot_as_file('d:\\截图.png')
try:
    # 刷新页面
    driver.refresh()  
    print('刷新页面')
except Exception as e:
    print('刷新失败')

print(driver.page_source)
driver.find_element(By.XPATH,'//*[@id="toolbar-search-input"]').send_keys('fuck')

运行结果如下：

 四，

点击搜索

#codding=utf-8
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.common.by import By
import time
options = Options()
options.binary_location = "C:\\Users\\Administrator\\Desktop\\chrome\\Chrome-bin\\chrome.exe"
options.add_experimental_option("detach", True)
#options.add_argument("headless")
path=Service('f:\\chromedriver.exe')
driver = webdriver.Chrome(options=options,service=path)
# 截图预览

driver.get("https://www.csdn.net")
time.sleep(2)


driver.get_screenshot_as_file('d:\\截图.png')
try:
    # 刷新页面
    driver.refresh()  
    print('刷新页面')
except Exception as e:
    print('刷新失败')

print(driver.page_source)
driver.find_element(By.XPATH,'//*[@id="toolbar-search-input"]').send_keys('fuck')
driver.find_element(By.XPATH,'//*[@id="toolbar-search-button"]').click()

网页源代码内相关内容如下：

 运行结果如下：

说我没有登录，OK，这就登录一下 

五，

selenium登录csdn

#codding=utf-8
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.common.by import By
import time
options = Options()
options.binary_location = "C:\\Users\\Administrator\\Desktop\\chrome\\Chrome-bin\\chrome.exe"
options.add_experimental_option("detach", True)
#options.add_argument("headless")
path=Service('f:\\chromedriver.exe')
driver = webdriver.Chrome(options=options,service=path)
# 截图预览

driver.get("https://www.csdn.net")
time.sleep(2)


driver.get_screenshot_as_file('d:\\截图.png')
try:
    # 刷新页面
    driver.refresh()  
    print('刷新页面')
except Exception as e:
    print('刷新失败')

print(driver.page_source)
driver.find_element(By.XPATH,'//*[@id="toolbar-search-input"]').send_keys('fuck')
#driver.find_element(By.XPATH,'//*[@id="toolbar-search-button"]').click()
login=driver.find_element(By.XPATH, "//*[@class='toolbar-btn-loginfun']")
#login=driver.find_element_by_class_name('toolbar-btn-loginfun')
login.click()

网页源代码相关内容如下：

 运行效果如下：

 未完待续！！！！