PhantomJS目前不支持文件下载。解决方法的相关问题：

PhantomJS doesn't currently support file downloads. Relevant issues with workarounds:

• 文件下载


• 如何使用Selenium webdriver和PhantomJS处理文件保存对话框？

• File download
• How to handle file save dialog box using Selenium webdriver and PhantomJS?

据我所知，至少3个选项：

As far as I understand, you have at least 3 options:

• 切换到 casperjs （你应该在这里离开python） / li>
  
• 尝试在 xvfb


• 切换到正常的无头浏览器

• switch to casperjs (and you should leave python here)
• try with headless on xvfb
• switch to normal non-headless browsers

这里也有一些可能有帮助的链接：

Here are also some links that might help too:

• Ubuntu中的无头自动测试


• XWindows for Headless Selenium（有进一步链接）


• 如何在无头模式下运行浏览器（chrome，IE和firefox）？


• 教程：如何使用Headless Firefox在Linux中进行剪贴

• Selenium Headless Automated Testing in Ubuntu
• XWindows for Headless Selenium (with further links inside)
• How to run browsers(chrome, IE and firefox) in headless mode?
• Tutorial: How to use Headless Firefox for Scraping in Linux