Pythonselenium webdriver-动态更改下载目录

Question

在定义Selenium Webdriver之前，明确定义下载目录，我们使用以下代码：

chromeOptions = webdriver.ChromeOptions()
prefs = {"download.default_directory" : "C:/data/cline"}
chromeOptions.add_experimental_option("prefs",prefs)
chromePath = "path to chromedriver"

driver = selenium.webdriver.chrome.webdriver.WebDriver(executable_path=chromePath, port=0,    chrome_options=chromeOptions, service_args=None, desired_capabilities=None,   service_log_path=None)

我想下载许多文件，每个文件都转到另一个（新创建的）目录。定义驱动程序后是否可以更改下载目录？

Answer 1

我无法弄清楚如何做到这一点并使用了工作。 以下解决方案不是移动您下载的文件。 supperimentswithCode在此处给出了答案。 下面是他解决方案的一部分

def move_to_download_folder(downloadPath, newFileName, fileExtension):
    got_file = False   
    ## Grab current file name.
    while got_file = False:
        try: 
            currentFile = glob.glob(DOWNLOAD_PATH+"*"+fileExtension)
            got_file = True

        except:
            print "File has not finished downloading"
            time.sleep(20)

    ## Create new file name
    fileDestination = downloadPath+newFileName+fileExtension

    os.rename(currentFile, fileDestination)

    return

我只是尝试过这种方式在运行WebDriver期间更改下载文件夹：

Answer 2

driver.command_executor._commands['send_command'] = (
    'POST', '/session/$sessionId/chromium/send_command')
download_path = 'PATH/TO/MY/CURRENT/DESIRED'
params = {
    'cmd': 'Page.setDownloadBehavior',
    'params': { 'behavior': 'allow', 'downloadPath': download_path }
}
driver.execute("send_command", params)

或：

download_path = 'PATH/TO/MY/CURRENT/DESIRED'
params = { 'behavior': 'allow', 'downloadPath': download_path }
driver.execute_cdp_cmd('Page.setDownloadBehavior', params['params'])

它不会更改Chrome的默认下载位置设置，但会将文件保存到随后的下载中的新给定文件夹（如果不存在的话，将创建）。

可能的解决方案可以将符号链接设置为 下载默认目录 您可以将解决方案组合在python

中的符号链接和自定义下载目录的设置中（这可以取决于OS上下文，我使用的是Ubuntu 22.04）。

Answer 3

DRIVER_PATH = '/usr/bin/chromedriver'
DEFAULT_DOWNLOAD_PATH = os.path.expanduser('~/Downloads')
DOWNLOAD_PATH = os.path.abspath('./Downloads')

def symlink(target, link_name, overwrite=False):
    '''
    Create a symbolic link named link_name pointing to target.
    If link_name exists then FileExistsError is raised, unless overwrite=True.
    When trying to overwrite a directory, IsADirectoryError is raised.
    https://stackoverflow.com/questions/8299386/modifying-a-symlink-in-python/
    '''
    pass

### MAIN

if __name__ == '__main__':

    service = Service(DRIVER_PATH)
    options = webdriver.ChromeOptions()
    prefs = {"download.default_directory": DOWNLOAD_PATH,
                 "savefile.default_directory": DOWNLOAD_PATH}
    options.add_experimental_option("prefs", prefs)
    browser = webdriver.Chrome(service=service, options=options)

    os.mkdir('./t1')
    symlink('./t1', DOWNLOAD_PATH, overwrite=True)
    browser.get('https://archive.org/download/knotssplicesandr13510gut/13510.zip')
    os.mkdir('./t2')
    symlink('./t2', DOWNLOAD_PATH, overwrite=True)
    browser.get('https://archive.org/download/knotssplicesandr13510gut/13510-h.zip')

driver.set_preference("download.default_directory", "path/") trone这个变体