用铬无头和硒下载

Question

# Headless implementation
from selenium import webdriver

chromeOptions = webdriver.ChromeOptions()
chromeOptions.add_argument("headless")

driver = webdriver.Chrome(chrome_options=chromeOptions)

driver.get('https://www.mockaroo.com/')
driver.find_element_by_id('download').click()
# ^^^ Download doesn't start

# Normal Mode
from selenium import webdriver

driver = webdriver.Chrome()

driver.get('https://www.mockaroo.com/')
driver.find_element_by_id('download').click()
# ^^^ Download works normally

prefs = {"download.default_directory" : "/Users/Chetan/Desktop/"}
chromeOptions.add_argument("headless")
chromeOptions.add_experimental_option("prefs",prefs)

如何让下载以无头模式启动？

Answer 1

是的，这是一个“功能”，为了安全。如前所述，这里是bug讨论:https://bugs.chromium.org/p/chromium/issues/detail?id=696481

chrome版本62.0.3196.0或更高版本中增加了支持，以支持下载。

下面是一个python实现。我不得不将该命令添加到chromedriver命令中。我会尝试提交一个公关，所以它是包括在图书馆在未来。

def enable_download_in_headless_chrome(self, driver, download_dir):
    # add missing support for chrome "send_command"  to selenium webdriver
    driver.command_executor._commands["send_command"] = ("POST", '/session/$sessionId/chromium/send_command')

    params = {'cmd': 'Page.setDownloadBehavior', 'params': {'behavior': 'allow', 'downloadPath': download_dir}}
    command_result = driver.execute("send_command", params)