【概述】

Httpwatch 一款強大的網頁資料分析工具。它可以捕捉http/https資料，檢視底層的資料，包括headers、cookies、cache等。同時，記錄傳送請求、接收請的時間。Anyway，a good tool for you。
或許，你有一個需求，要在selenium進行頁面功能測試的時候，你需要獲取一些資訊，如提交請求資料、接收請求資料、頁面載入的時間等。selenium + httpwatch，將是一個不錯的解決方案。本文主要介紹，將httpwatch附加到selenium webdriver的方法。

【selenium + httpwatch】

官方做法（JAVA版）：

IWebDriver driver = <Create Selenium Driver using existing profile>; // Don't use new FirefoxDriver()

// Set a unique initial page title so that HttpWatch can attach to it
string uniqueTitle = Guid.NewGuid().ToString();
IJavaScriptExecutor js = driver as IJavaScriptExecutor;
js.ExecuteScript("document.title = '"
 
 + uniqueTitle + "';");

// Attach HttpWatch to the instance of the browser created through Selenium
Plugin plugin = control.AttachByTitle(uniqueTitle);

我就照模照樣的寫個Python版的

control = win32com.client.Dispatch('HttpWatch.Controller')
#driver=webdriver.Ie(executable_path="D:\\software\\IEDriverServer_Win32_2.28.0\\IEDriverServer.exe")
 

profile = webdriver.FirefoxProfile(r'C:\Users\X230\AppData\Roaming\Mozilla\Firefox\Profiles\68zb9g9a.default')
driver=webdriver.Firefox(firefox_profile=profile)
uniqueTitle = str(uuid.uuid4())
driver.get(url)
driver.execute_script('document.title = "' + uniqueTitle + '";') 

plugin = control.AttachByTitle(uniqueTitle)
plugin.Log.EnableFilter(False)
plugin.Record()
#plugin.GotoURL(url)
plugin.Stop()

請留意官方版的第一句話（如下）。意思是，（如果使用Firefox）請不要使用預設的profile配置，需要使用Firefox本地profile配置。

IWebDriver driver = < Create Selenium Driver using existing profile >; // Don’t use new FirefoxDriver()

selenium Firefox 預設配置檔案是webdriver_prefs.json，預設不載入所有的外掛（add-ons）。所以，如果你忽略第一句，將發生以下報錯：

    plugin = self._control.AttachByTitle(uniqueTitle)
  File "<COMObject HttpWatch.Controller>", line 2, in AttachByTitle
pywintypes.com_error: (-2147352567, '\xb7\xa2\xc9\xfa\xd2\xe2\xcd\xe2\xa1\xa3', (0, u'HttpWatch.Controller', u"AttachByTitle failed because no IE or Firefox page was found with the title 'd9f5f540-3227-4d8a-b928-daaf196e256b'. \r\n\r\nPlease check that HttpWatch is installed, enabled and working correctly in the target browser window. Also if you are using Selenium and Firefox make sure that you are using a copy of a profile that has HttpWatch enabled rather than a fresh profile created by 'new FirefoxDriver()'. For more information please refer to the Selenium/Firefox sample described in the HttpWatch Automation help - AttachByTitle failed", None, 0, -2147467259), None)

那Firefox本地profile檔案在哪，請查閱Firefox官方幫助：

然後，如下初始化driver即可：

driver=webdriver.Firefox(firefox_profile=profile)