python學習-Selenium爬蟲之使用代理ip的方法

今天給大家分享的是如何在爬取數據的時候防止 IP被封，今天給大家分享兩種方法，希望大家可以認真學習，再也不用擔心被封IP啦。

第一種：

降低訪問速度，我們可以使用 time模塊中的sleep，使程序每運行一次后就睡眠1s，這樣的話就可以大大的減少ip被封的幾率

第二種：

為了提高效率，我們可以使用代理 ip來解決，ip是億牛云的動態轉發代理，以下是代理配置過程的示例

Selenium ?

     from   selenium   import  webdriver

     import   string

     import   zipfile

     # 代理服務器

    proxyHost = "t.16yun.cn"

    proxyPort = "31111"

     # 代理隧道驗證信息

    proxyUser = "username"

    proxyPass = "password"

     def   create_proxy_auth_extension (proxy_host, proxy_port,

                                   proxy_username, proxy_password,

                                   scheme= 'http' , plugin_path= None ):

         if  plugin_path is None :

            plugin_path = r 'C:/{}_{}@t.16yun.zip' .format(proxy_username, proxy_password)

        manifest_json = """        {            "version": "1.0.0",            "manifest_version": 2,            "name": "16YUN Proxy",            "permissions": [                "proxy",                "tabs",                "unlimitedStorage",                "storage",                "",                "webRequest",                "webRequestBlocking"            ],            "background": {                "scripts": ["background.js"]            },            "minimum_chrome_version":"22.0.0"        }        """

        background_js = string.Template(

             """            var config = {                mode: "fixed_servers",                rules: {                    singleProxy: {                        scheme: "${scheme}",                        host: "${host}",                        port: parseInt(${port})                    },                    bypassList: ["foobar.com"]                }              };

            chrome.proxy.settings.set({value: config, scope: "regular"}, function() {});

            function callbackFn(details) {                return {                    authCredentials: {                        username: "${username}",                        password: "${password}"                    }                };            }

            chrome.webRequest.onAuthRequired.addListener(                callbackFn,                {urls: [""]},                ['blocking']            );            """

        ).substitute(

            host=proxy_host,

            port=proxy_port,

            username=proxy_username,

            password=proxy_password,

            scheme=scheme,

        )

         with  zipfile.ZipFile(plugin_path, 'w' ) as  zp:

            zp.writestr( "manifest.json" , manifest_json)

            zp.writestr( "background.js" , background_js)

         return  plugin_path

    proxy_auth_plugin_path = create_proxy_auth_extension(

        proxy_host=proxyHost,

        proxy_port=proxyPort,

        proxy_username=proxyUser,

        proxy_password=proxyPass)

    option = webdriver.ChromeOptions()

    option.add_argument( "--start-maximized" )

     # 如報錯 chrome-extensions

     # option.add_argument("--disable-extensions")

    option.add_extension(proxy_auth_plugin_path)

    driver = webdriver.Chrome(chrome_options=option)

    driver.get( "http://httpbin.org/ip" )

好 了，今天關于 python學習的分享就到這里，上邊的那段代碼可以直接使用，但是里邊的代理應該已經過期，大家在使用的時候可能需要聯系代理商開通服務，最后呢希望大家能夠收藏起來，要記得做筆記哦。好記性不如爛筆頭。