我正在尝试使用Selenium + JavaScript + XPath从网页中读取一些值。
这是我的代码：
print browser.execute_script("window.document.evaluate('/html/body/div[5]/div[7]/div/table/tbody/tr/td[3]', document, null, XPathResult.ANY_TYPE, null).iterateNext().textContent;")
不幸的是，每次运行它都会产生错误，是否有任何方法可以使其正常工作？
这是追溯：
Traceback (most recent call last):
File "gains.py", line 50, in
print browser.execute_script("window.document.evaluate('/html/body/div[5]/div[7]/div/table/tbody/tr/td[3]', document, null, XPathResult.ANY_TYPE, null).iterateNext().textContent")
File "/usr/local/lib/python2.6/dist-packages/selenium-2.21.2-py2.6.egg/selenium/webdriver/remote/webdriver.py", line 385, in execute_script
{'script': script, 'args':converted_args})['value']
File "/usr/local/lib/python2.6/dist-packages/selenium-2.21.2-py2.6.egg/selenium/webdriver/remote/webdriver.py", line 153, in execute
self.error_handler.check_response(response)
File "/usr/local/lib/python2.6/dist-packages/selenium-2.21.2-py2.6.egg/selenium/webdriver/remote/errorhandler.py", line 147, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: ''