用Heroku上的Python selenium运行ChromeDriver [英] Running ChromeDriver with Python selenium on Heroku

问题描述

因此，我在Heroku上有一台Flask服务器，在一段时间内一直工作正常。现在，根据新的要求，我需要向Flask服务器添加功能以从外部网站获取页面。由于原因我最熟悉的是，我使用Selenium和Chrome网络驱动程序来做到这一点。我可以设置它，它工作正常，但我很不确定如何在Heroku服务器上进行设置。我读了一些关于buildpack的内容，并发现ChromeDriver的buildpack：

  https://elements.heroku.com/buildpacks/jimmynguyc / heroku-buildpack-chromedriver 
  

然而，我不确定如何继续进一步操作。如何安装铬浏览器本身，还有什么需要把它捆绑？

解决方案

我有同样的问题，以下步骤工作正常对我来说：

• 我在heroku上添加了以下构建包：
  
  （要安装chrome，因为chromedriver需要它）和
  https://github.com/heroku/heroku-buildpack -chromedriver 。


• 我创建了一个环境变量GOOGLE_CHROME_BIN，其中h的路径为chrome eroku：/app/.apt/usr/bin/google-chrome和一个名为CHROMEDRIVER_PATH的环境变量，其路径为heroku：/app/.chromedriver/bin/chromedriver。



• 在我的python文件中，我配置了chromedriver：
  
  

    chrome_options =选项（）
   chrome_options.binary_location = GOOGLE_CHROME_BIN 
   chrome_options.add_argument（' -  disable-gpu'）
   chrome_options.add_argument（' -  no-sandbox'）
   driver = webdriver.Chrome（executable_path = CHROMEDRIVER_PATH，chrome_options = chrome_options） 
    

（首先，我试着配置chromedriver没有参数，但我遇到了以下错误：Chrome无法启动：崩溃。 --disable-gpu和--no-sandbox解决了我的问题）。

So I have a Flask server on Heroku which has been working fine as expected for some time.Now, as per new requirements, I need to add functionality to the Flask server to fetch a page from an external website.Because of reasons best known to me, I am using Selenium along with Chrome web driver to do this.Locally I was able to set this up and it works fine but I am quite unsure as to how to set it up on the Heroku server. I read a bit about buildpacks and found this buildpack for ChromeDriver :

https://elements.heroku.com/buildpacks/jimmynguyc/heroku-buildpack-chromedriver

However, I am not sure how to proceed further.How do I install chromium browser itself and what else is needed to tie it all up ?

解决方案

I had the same issue and the following steps worked fine for me:

• I added the following buildpacks on heroku: https://github.com/heroku/heroku-buildpack-xvfb-google-chrome (to install chrome, since chromedriver requires it) and https://github.com/heroku/heroku-buildpack-chromedriver.
• I created an environment variable GOOGLE_CHROME_BIN, with the path of chrome on heroku: /app/.apt/usr/bin/google-chrome and an environment variable called CHROMEDRIVER_PATH with the path of chromedriver on heroku: /app/.chromedriver/bin/chromedriver.

• In my python file, I configured chromedriver:

  chrome_options = Options()
  chrome_options.binary_location = GOOGLE_CHROME_BIN
  chrome_options.add_argument('--disable-gpu')
  chrome_options.add_argument('--no-sandbox')
  driver = webdriver.Chrome(executable_path=CHROMEDRIVER_PATH, chrome_options=chrome_options)
  

(First, I tried to configure chromedriver with no arguments, but I faced the following error: "Chrome failed to start: crashed". --disable-gpu and --no-sandbox solved the problem for me).

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