使用Selenium Webdriver Python上传文件

Question

码：

file_button = browser.find_element_by_id('fileUploadProxy')
file_button.send_keys('/Users/home/Downloads/1-Students-and-Parent-Email.csv')

但是我收到以下错误：

Traceback (most recent call last):
  File "test.py", line 110, in <module>
    upload_students_results('Surname, Name')
  File "test.py", line 91, in upload_students_results
    file_button.send_keys('/Users/home/Downloads/1-Students-and-Parent-Email.csv')
  File "/Library/Python/2.7/site-packages/selenium/webdriver/remote/webelement.py", line 349, in send_keys
'value': keys_to_typing(value)})
  File "/Library/Python/2.7/site-packages/selenium/webdriver/remote/webelement.py", line 493, in _execute
return self._parent.execute(command, params)
  File "/Library/Python/2.7/site-packages/selenium/webdriver/remote/webdriver.py", line 249, in execute
self.error_handler.check_response(response)
  File "/Library/Python/2.7/site-packages/selenium/webdriver/remote/errorhandler.py", line 193, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: unknown error: cannot focus element
  (Session info: chrome=58.0.3029.96)
  (Driver info: chromedriver=2.29.461585 (0be2cd95f834e9ee7c46bcc7cf405b483f5ae83b),platform=Mac OS X 10.12.4 x86_64)

Answer 1

问题是-您将键发送到div不“可交互” 的元素，不接受键-因此出现“无法聚焦元素”错误。

您链接的解决方案背后的想法是 将密钥发送到 负责文件上传的input元素type="file"。在HTML中找到此元素，然后向其发送密钥。

请注意，此元素可能是不可见的。在这种情况下，你应该先使其可见的send_keys()工作。

更新：

好的，现在我们至少知道哪个元素是我们想要的元素：

<input type="file" name="fileToUpload" id="fileToUpload2" class="fileToUpload">

由于找不到此元素很麻烦，请尝试等待它：

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC


file_upload = WebDriverWait(driver, 10).until(
    EC.presence_of_element_located((By.ID, "fileToUpload2"))
)
file_upload.send_keys('/Users/home/Downloads/1-Students-and-Parent-Email.csv')

或/和，然后检查该元素是否在iframe- 内，则需要切换到的上下文，iframe然后才执行元素搜索。