"Permission Denied"错误破坏了Selenium的刮擦

Question

我一直在使用Selenium(Python Webdriver)抓取一个网站.当我尝试click()选择它时,我得到一个权限被拒绝错误.完整堆栈跟踪:

Traceback (most recent call last):
  File "scrape.py", line 19, in <module>
    subjectOptions[1].click()
  File "/Library/Python/2.7/site-packages/selenium/webdriver/remote/webelement.py", line 45, in click
    self._execute(Command.CLICK_ELEMENT)
  File "/Library/Python/2.7/site-packages/selenium/webdriver/remote/webelement.py", line 194, in _execute
    return self._parent.execute(command, params)
  File "/Library/Python/2.7/site-packages/selenium/webdriver/remote/webdriver.py", line 153, in execute
    self.error_handler.check_response(response)
  File "/Library/Python/2.7/site-packages/selenium/webdriver/remote/errorhandler.py", line 147, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: u"'Error: Permission denied for <http://localhost/scrape_test> to get property HTMLDocument.compatMode' when calling method: [wdIMouse::move]"

这是导致问题的代码.我知道我试图点击的选项存在(基于print):

from selenium import webdriver
from selenium.common.exceptions import TimeoutException
from selenium.webdriver.support.ui import WebDriverWait #available since 2.4.0
import time

# Create a new instance of the FireFox driver
driver = webdriver.Firefox()

# go to the local version of the page for testing
driver.get("http://localhost/scrape_test")

# Find the select by ID, get its options
selectElement = driver.find_element_by_id("CLASS_SRCH_WRK2_SUBJECT$65$")
subjectOptions = selectElement.find_elements_by_tag_name("option")

# Click the desired option
subjectOptions[1].click()

我在Mac OS X 10.7.2上使用Firefox 8.0.1

Answer 1

看起来这是一个webdriver错误.上次修改其中一个selenium源代码文件的程序员的最新日志条目说:

这导致权限错误,我仍然无法减少:

错误:http ://www.finn.no在调用方法时获取属性HTMLDocument.compatMode'的权限被拒绝:[wdIMouse :: move]

这里,这里和这里有一些关于这个问题的讨论.

根据讨论,它应该可以与Firefox 7一起使用.此外,这个相关问题意味着尽管存在错误,仍然会点击链接,因此它可能在try/except中工作.