webdriver.chrome（）设置随机的User-Agent

使用 `webdriver.Chrome()` 设置随机的 User-Agent 可以通过以下步骤实现：

1. 首先，需要从 `fake_useragent` 库中导入 `UserAgent` 类。

from fake_useragent import UserAgent

2. 然后，创建一个 `UserAgent` 对象，使用 `random` 方法随机获取一个 User-Agent。

user_agent = UserAgent().random

3. 接下来，创建一个 `Options` 对象，使用 `add_argument` 方法添加 `user-agent` 参数，并将上一步中随机获取的 User-Agent 赋值给该参数。

from selenium.webdriver.chrome.options import Options

options = Options()
options.add_argument('user-agent={}'.format(user_agent))

4. 最后，通过 `webdriver.Chrome()` 启动 Chrome 浏览器，并将上一步中创建的 `Options` 对象作为参数传入。

from selenium import webdriver

driver = webdriver.Chrome(options=options)

这样，就可以使用随机的 User-Agent 启动 Chrome 浏览器了。

相关问题

if ip_dict is not None: options.add_argument(f'--proxy-server={ip_dict}') options.add_argument('User-Agent=Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.80 Safari/537.36') driver_path = "C:/Users/Besty/Desktop/chromedriver" driver = webdriver.Chrome(executable_path='chromedriver.exe', options=options) # driver = webdriver.Chrome(options=options) # 设置webdriver为undefined driver.execute_cdp_cmd("Page.addScriptToEvaluateOnNewDocument", { "source": """ Object.defineProperty(navigator, 'webdriver', { get: () => undefined }) """ }) driver.get(url) return driver解释一下这段代码

这段代码是使用Selenium库自动化浏览器，访问一个网页。具体代码逻辑如下：

1. 如果传入的ip_dict不为空，则使用该代理IP访问网页。
2. 设置浏览器的User-Agent头信息，模拟浏览器访问。
3. 指定chromedriver的路径，创建webdriver.Chrome对象，以便启动Chrome浏览器。
4. 执行cdp命令，设置webdriver为undefined，以避免被检测出使用了Selenium库。
5. 使用webdriver访问指定的url。
6. 返回webdriver对象，以便后续操作。

webdriver.Chrome() 怎么设置请求次数

您可以使用以下代码来设置请求次数：

from selenium import webdriver
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities

caps = DesiredCapabilities.CHROME
caps['loggingPrefs'] = {'performance': 'ALL'}

options = webdriver.ChromeOptions()
options.add_argument('--ignore-certificate-errors')
options.add_argument('--ignore-ssl-errors')
options.add_argument('--disable-extensions')
options.add_argument('--disable-gpu')
options.add_argument('--no-sandbox')
options.add_argument('--disable-dev-shm-usage')
options.add_argument('--disable-infobars')
options.add_argument('--disable-notifications')
options.add_argument('--disable-popup-blocking')
options.add_argument('--disable-web-security')
options.add_argument('--disable-logging')
options.add_argument('--log-level=3')

driver = webdriver.Chrome(desired_capabilities=caps, options=options)
driver.execute_cdp_cmd('Network.enable', {})
driver.execute_cdp_cmd('Network.setCacheDisabled', {'cacheDisabled': True})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'Referer': 'https://www.google.com/'}})
driver.execute_cdp_cmd('Network.setRequestInterception', {'patterns': [{'urlPattern': '*', 'resourceType': 'Document', 'interceptionStage': 'HeadersReceived'}]})
driver.execute_cdp_cmd('Network.interceptRequest', {'urlPattern': '*', 'resourceType': 'Document', 'interceptionStage': 'HeadersReceived', 'handler': 'Network.continueInterceptedRequest'})
driver.execute_cdp_cmd('Network.setBlockedURLs', {'urls': ['*.jpg', '*.jpeg', '*.png', '*.gif', '*.css', '*.js', '*.svg', '*.woff', '*.woff2', '*.ttf', '*.eot', '*.ico']})
driver.execute_cdp_cmd('Network.setCookie', {'name': 'cookie_name', 'value': 'cookie_value', 'url': 'https://www.google.com/'})
driver.execute_cdp_cmd('Network.setCookies', {'cookies': [{'name': 'cookie_name', 'value': 'cookie_value', 'url': 'https://www.google.com/'}]})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'Referer': 'https://www.google.com/'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'Accept-Language': 'en-US,en;q=0.9'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'Accept-Encoding': 'gzip, deflate, br'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'Connection': 'keep-alive'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'Upgrade-Insecure-Requests': '1'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'Cache-Control': 'max-age=0'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'Pragma': 'no-cache'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'TE': 'Trailers'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'DNT': '1'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Requested-With': 'XMLHttpRequest'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Forwarded-For': '127.0.0.1'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Real-IP': '127.0.0.1'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Client-IP': '127.0.0.1'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Remote-IP': '127.0.0.1'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Originating-IP': '127.0.0.1'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Host': 'www.google.com'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Forwarded-Host': 'www.google.com'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Forwarded-Proto': 'https'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Forwarded-Scheme': 'https'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Forwarded-Port': '443'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Forwarded-For-Original': '127.0.0.1'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Real-IP-Original': '127.0.0.1'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Client-IP-Original': '127.0.0.1'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Remote-IP-Original': '127.0.0.1'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Originating-IP-Original': '127.0.0.1'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Host-Original': 'www.google.com'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Forwarded-Host-Original': 'www.google.com'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Forwarded-Proto-Original': 'https'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Forwarded-Scheme-Original': 'https'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Forwarded-Port-Original': '443'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Forwarded-For-Client-IP': '127.0.0.1'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Real-IP-Client-IP': '127.0.0.1'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Client-IP-Client-IP': '127.0.0.1'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Remote-IP-Client-IP': '127.0.0.1'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Originating-IP-Client-IP': '127.0.0.1'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Host-Client-IP': 'www.google.com'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Forwarded-Host-Client-IP': 'www.google.com'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Forwarded-Proto-Client-IP': 'https'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Forwarded-Scheme-Client-IP': 'https'}})
driver.execute_cdp_cmd('Network.setExtraHTTPHeaders', {'headers': {'X-Forwarded-Port-Client-IP': '443'}})

url = 'https://www.google.com/'
for i in range(10):
    driver.get(url)

这段代码可以设置请求次数为10次，您可以根据需要进行修改。