WebDriver常见操作

本文当个记录贴,记录WebDriver常用的一些函数(含自己封装的函数)

 

让WebDriver使用浏览器用户设置

1 option = webdriver.ChromeOptions()
2 option.add_argument(r'user-data-dir=C:\Users\AlphaINF\AppData\Local\Google\Chrome\User Data')
3 driver = webdriver.Chrome(options = option)

 

封装好的setAttribute

1 def setAttribute(driver, elementObj, attributeName, value):
2     # 封装设置页面对象的属性值的方法
3     # 调用JavaScript代码修改页面元素的属性值,arguments[0]-[2]分别会用后面的
4     # element、attributeName和value参数值进行替换,并执行该JavaScript代码
5     driver.execute_script("arguments[0].setAttribute\
6     (arguments[1],arguments[2])", elementObj, attributeName, value)

 

封装好的setHTML

1 def setHTML(driver, elementObj, value):
2     #封装修改页面对象HTML代码的函数
3     driver.execute_script("arguments[0].innerText = '" + value + "'", elementObj)

 

封装好的HTML转markdown

1 def transform(a):
2     #将html翻译为markdown
3     return html2text.html2text(a)

 

chrome的一些设置

chrome_options = webdriver.ChromeOptions()
chrome_options.add_argument('--headless')
#浏览器静默启动
chrome_options.add_argument('blink-settings=imagesEnabled=false')
#浏览器无图模式

 

封装了Try,尝试次数和attribute的抓取器

def captureText(XPath,attribute="",reGetTimes = 100):
    for i in range(reGetTimes):
        try:
            get = driver.find_element_by_xpath(XPath)
            if(len(attribute)>0):
                get = get.get_attribute(attribute)
                get = str(get)
                if len(get) == 0:
                    get = ' '
                return str(get)
            else:
                return get.text
        except:
            sleep(0.1)
    return " "

 

对CSV进行操作 

fp = open(fileName,"a",newline='')
    writer = csv.writer(fp)
    lines = [Title,releaseTime,author,description,views,likes,comments,tags]
    try:
        writer.writerow(lines)
    except:
        print('err')
    fp.close()

 

滑动到窗口底部

driver.execute_script('window.scrollTo(0,document.body.scrollHeight)')
posted @ 2021-11-26 10:42  AlphaInf  阅读(235)  评论(0编辑  收藏  举报