最近想爬取https://jobs.51job.com/chengdu-gxq/131868888.html?s=sou_sou_soulb&t=0_0这个网址中的一些信息，比如获取工作的名称，但是该网页为动态网页，之前用selenium爬取返回为入乱七八糟的网址。所以我今天就从新的修改了下程序，然后再进行数据的获取，结果是成功的。

但是我们都知道招聘类的网站反爬也是很严的，尤其是针对ip。但是有时候我们的爬虫程序添加了代理，可我们不知道程序是否获取到了ip，尤其是动态转发模式的，这时候就需要进行检测了，以下是一种代理是否伪装成功的检测方式，大家可以参考下。示例来源于https://www.16yun.cn/help/ss_demo/#8selenium

from selenium import webdriver
    import string
    import zipfile

    # 代理服务器(产品官网 www.16yun.cn)
    proxyHost = "t.16yun.cn"
    proxyPort = "31111"

    # 代理验证信息
    proxyUser = "16EACILI"
    proxyPass = "676780"

    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'D:/{}_{}@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")

    # 如报错 chrome-extensions 
    # option.add_argument("--disable-extensions")

    option.add_extension(proxy_auth_plugin_path)

    # 关闭webdriver的一些标志
    # option.add_experimental_option('excludeSwitches', ['enable-automation'])        

    driver = webdriver.Chrome(chrome_options=option)

    # 修改webdriver get属性
    # script = '''
    # Object.defineProperty(navigator, 'webdriver', {
    # get: () => undefined
    # })
    # '''
    # driver.execute_cdp_cmd("Page.addScriptToEvaluateOnNewDocument", {"source": script})     



    driver.get("https://jobs.51job.com/chengdu-gxq/131868888.html?s=sou_sou_soulb&t=0_0")
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我们可以通过访问http://httpbin.org/ip网站获取ip，然后后再访问www.ip138.com就知道是否获取到了ip。