如何在机器人框架中使用无头 chrome 浏览器启用下载文件?
How can I enable download a file using a headless chrome browser in robot framework?
如何使用 chrome 开发工具中的 Page.setDownloadBehavior 进行传递,以便我可以使用以下代码设置无头 chrome 的下载行为?
Create Chrome Browser
[Arguments] ${link_to_open}
${chrome_options}= Evaluate sys.modules['selenium.webdriver'].ChromeOptions() sys, selenium.webdriver
${prefs}= Create Dictionary download.default_directory=${DOWNLOADS_DIR}
Call Method ${chrome options} add_argument headless
Call Method ${chrome options} add_argument disable-gpu
Selenium2Library.Go To ${link_to_open}
尝试在无头模式下使用 Chrome 下载文件时似乎出现 'security feature'。 Chromium issue tracker. This pointed to the Whosebug answer for . In this answer a Python example is given (GitHub) 中对此进行了进一步讨论,它可以轻松转换为机器人框架库:
headless_download.py
class headless_download(object):
ROBOT_LIBRARY_VERSION = 1.0
def __init__(self):
pass
def enable_download_in_headless_chrome(self, driver, download_dir):
"""
there is currently a "feature" in chrome where
headless does not allow file download: https://bugs.chromium.org/p/chromium/issues/detail?id=696481
This method is a hacky work-around until the official chromedriver support for this.
Requires chrome version 62.0.3196.0 or above.
"""
# add missing support for chrome "send_command" to selenium webdriver
driver.command_executor._commands["send_command"] = ("POST", '/session/$sessionId/chromium/send_command')
params = {'cmd': 'Page.setDownloadBehavior', 'params': {'behavior': 'allow', 'downloadPath': download_dir}}
command_result = driver.execute("send_command", params)
print("response from browser:")
for key in command_result:
print("result:" + key + ":" + str(command_result[key]))
下载文件时, 的 StackOverlow 答案非常适合此示例。为无头模式、额外的库和一个工作示例添加额外的行:
headless_download.robot
*** Settings ***
Test Teardown Close All Browsers
Library Selenium2Library
Library OperatingSystem
Library headless_download
*** Test Cases ***
Download PDF
# create unique folder
${now} Get Time epoch
${download directory} Join Path ${OUTPUT DIR} downloads_${now}
Create Directory ${download directory}
${chrome options}= Evaluate sys.modules['selenium.webdriver'].ChromeOptions() sys, selenium.webdriver
# list of plugins to disable. disabling PDF Viewer is necessary so that PDFs are saved rather than displayed
${disabled} Create List Chrome PDF Viewer
${prefs} Create Dictionary download.default_directory=${download directory} plugins.plugins_disabled=${disabled}
Call Method ${chrome options} add_experimental_option prefs ${prefs}
Call Method ${chrome options} add_argument headless
Call Method ${chrome options} add_argument disable-gpu
Create Webdriver Chrome chrome_options=${chrome options}
Go To http://www.sample-videos.com/download-sample-text-file.php
${S2L} get library instance Selenium2Library
${webdriver} Call Method ${S2L} _current_browser
Enable Download In Headless Chrome ${webdriver} ${download directory}
Click Link xpath=//a[@data='1']
# wait for download to finish
${file} Wait Until Keyword Succeeds 1 min 2 sec Download should be done ${download directory}
*** Keywords ***
Download should be done
[Arguments] ${directory}
[Documentation] Verifies that the directory has only one folder and it is not a temp file.
...
... Returns path to the file
${files} List Files In Directory ${directory}
Length Should Be ${files} 1 Should be only one file in the download folder
Should Not Match Regexp ${files[0]} (?i).*\.tmp Chrome is still downloading a file
${file} Join Path ${directory} ${files[0]}
Log File was successfully downloaded to ${file}
[Return] ${file}
所以,简而言之:如果没有其他人在 Stack Overflow 上的贡献,这个答案是不可能的。如果这为您提供了一个可行的解决方案,请点击其他答案的链接并为这些答案投票。
如何使用 chrome 开发工具中的 Page.setDownloadBehavior 进行传递,以便我可以使用以下代码设置无头 chrome 的下载行为?
Create Chrome Browser
[Arguments] ${link_to_open}
${chrome_options}= Evaluate sys.modules['selenium.webdriver'].ChromeOptions() sys, selenium.webdriver
${prefs}= Create Dictionary download.default_directory=${DOWNLOADS_DIR}
Call Method ${chrome options} add_argument headless
Call Method ${chrome options} add_argument disable-gpu
Selenium2Library.Go To ${link_to_open}
尝试在无头模式下使用 Chrome 下载文件时似乎出现 'security feature'。 Chromium issue tracker. This pointed to the Whosebug answer for
headless_download.py
class headless_download(object):
ROBOT_LIBRARY_VERSION = 1.0
def __init__(self):
pass
def enable_download_in_headless_chrome(self, driver, download_dir):
"""
there is currently a "feature" in chrome where
headless does not allow file download: https://bugs.chromium.org/p/chromium/issues/detail?id=696481
This method is a hacky work-around until the official chromedriver support for this.
Requires chrome version 62.0.3196.0 or above.
"""
# add missing support for chrome "send_command" to selenium webdriver
driver.command_executor._commands["send_command"] = ("POST", '/session/$sessionId/chromium/send_command')
params = {'cmd': 'Page.setDownloadBehavior', 'params': {'behavior': 'allow', 'downloadPath': download_dir}}
command_result = driver.execute("send_command", params)
print("response from browser:")
for key in command_result:
print("result:" + key + ":" + str(command_result[key]))
下载文件时,
headless_download.robot
*** Settings ***
Test Teardown Close All Browsers
Library Selenium2Library
Library OperatingSystem
Library headless_download
*** Test Cases ***
Download PDF
# create unique folder
${now} Get Time epoch
${download directory} Join Path ${OUTPUT DIR} downloads_${now}
Create Directory ${download directory}
${chrome options}= Evaluate sys.modules['selenium.webdriver'].ChromeOptions() sys, selenium.webdriver
# list of plugins to disable. disabling PDF Viewer is necessary so that PDFs are saved rather than displayed
${disabled} Create List Chrome PDF Viewer
${prefs} Create Dictionary download.default_directory=${download directory} plugins.plugins_disabled=${disabled}
Call Method ${chrome options} add_experimental_option prefs ${prefs}
Call Method ${chrome options} add_argument headless
Call Method ${chrome options} add_argument disable-gpu
Create Webdriver Chrome chrome_options=${chrome options}
Go To http://www.sample-videos.com/download-sample-text-file.php
${S2L} get library instance Selenium2Library
${webdriver} Call Method ${S2L} _current_browser
Enable Download In Headless Chrome ${webdriver} ${download directory}
Click Link xpath=//a[@data='1']
# wait for download to finish
${file} Wait Until Keyword Succeeds 1 min 2 sec Download should be done ${download directory}
*** Keywords ***
Download should be done
[Arguments] ${directory}
[Documentation] Verifies that the directory has only one folder and it is not a temp file.
...
... Returns path to the file
${files} List Files In Directory ${directory}
Length Should Be ${files} 1 Should be only one file in the download folder
Should Not Match Regexp ${files[0]} (?i).*\.tmp Chrome is still downloading a file
${file} Join Path ${directory} ${files[0]}
Log File was successfully downloaded to ${file}
[Return] ${file}
所以,简而言之:如果没有其他人在 Stack Overflow 上的贡献,这个答案是不可能的。如果这为您提供了一个可行的解决方案,请点击其他答案的链接并为这些答案投票。