WindowsError: [Error 87] The parameter is incorrect

[lamb ele]

Hi guys:

  I'm very new to selenium and have been trying to learn its python package by running scripts found on its documentation website: http://selenium.googlecode.com/svn/trunk/docs/api/py/index.html. But I got the following error as soon as I try to set up a firefox browser object:

from selenium import webdriver

from selenium.common.exceptions import NoSuchElementException

from selenium.webdriver.common.keys import Keys

browser = webdriver.Firefox()

Traceback (most recent call last):

  File "<pyshell#3>", line 1, in <module>

    browser = webdriver.Firefox()

  File "C:\Python27\lib\site-packages\selenium\webdriver\firefox\webdriver.py", line 61, in __init__

    self.binary, timeout),

  File "C:\Python27\lib\site-packages\selenium\webdriver\firefox\extension_connection.py", line 47, in __init__

    self.binary.launch_browser(self.profile)

  File "C:\Python27\lib\site-packages\selenium\webdriver\firefox\firefox_binary.py", line 50, in launch_browser

    self._start_from_profile_path(self.profile.path)

  File "C:\Python27\lib\site-packages\selenium\webdriver\firefox\firefox_binary.py", line 73, in _start_from_profile_path

    env=self._firefox_env).communicate()

  File "C:\Python27\lib\subprocess.py", line 679, in __init__

    errread, errwrite)

  File "C:\Python27\lib\subprocess.py", line 893, in _execute_child

    startupinfo)

WindowsError: [Error 87] The parameter is incorrect

When I was first trying to install selenium-server-standalone-2.28.0.jar, the process seemed to get stuck at "14:37:36.630 INFO - Started org.openqa.jetty.jetty.servlet.ServletHandler@4fc5a2 f9". But later when I re-ran the command "java -jar selenium-server-standalone-2.28.0.jar" , it says"Selenium is already running on port 4444", so I assume that the first installation somehow got through. Is it an installation problem? Any help is appreciated! I'm using windows 7, 64

$ java -jar selenium-server-standalone-2.28.0.jar

Aug 03, 2013 2:37:36 PM org.openqa.grid.selenium.GridLauncher main

INFO: Launching a standalone server

14:37:36.505 INFO - Java: Oracle Corporation 23.7-b01

14:37:36.506 INFO - OS: Windows 7 6.1 amd64

14:37:36.514 INFO - v2.28.0, with Core v2.28.0. Built from revision 18309

14:37:36.606 INFO - RemoteWebDriver instances should connect to: http://127.0.0. 1:4444/wd/hub

14:37:36.607 INFO - Version Jetty/5.1.x

14:37:36.608 INFO - Started HttpContext[/selenium-server/driver,/selenium-server/driver]

14:37:36.608 INFO - Started HttpContext[/selenium-server,/selenium-server]

14:37:36.608 INFO - Started HttpContext[/,/]

14:37:36.630 INFO - Started org.openqa.jetty.jetty.servlet.ServletHandler@4fc5a2f9

14:37:36.630 INFO - Started HttpContext[/wd,/wd]

14:37:36.632 WARN - Failed to start: SocketL...@0.0.0.0:4444

Exception in thread "main" java.net.BindException: Selenium is already running on port 4444. Or some other service is.

        at org.openqa.selenium.server.SeleniumServer.start(SeleniumServer.java:472)

        at org.openqa.selenium.server.SeleniumServer.boot(SeleniumServer.java:280)

        at org.openqa.selenium.server.SeleniumServer.main(SeleniumServer.java:243)

        at org.openqa.grid.selenium.GridLauncher.main(GridLauncher.java:54)

[Krishnan Mahadevan]

You don't need to start a selenium standalone server for you to work with the WebDriver.

$ java -jar selenium-server-standalone-2.28.0.jar <--- This is only required when you are trying to work with DefaultSelenium.

The error

Exception in thread "main" java.net.BindException: Selenium is already running on port 4444. Or some other service is.

Is simply java's way of telling you that there is already something else that is listening on port 4444. It could be either another Selenium server or some other process.

You would need to list out the process that is listening on port 4444 and kill it.

http://www.techrepublic.com/blog/it-security/list-open-ports-and-listening-services/

Thanks and Regards

Krishnan Mahadevan

"All the desirable things in life are either illegal, expensive, fattening or in love with someone else!"

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[Sam Kernion]

I am having the same issue with WindowsErroer: [Error 87].  Have you had any luck getting past this issue? I am using Python 2.7.5.3, firefox 24, selenium 2.35.  I was originally using python 3.3 and figured using 2.7 may help, but to no avail.

Thanks.

[Kieran Tully]

On Saturday, August 3, 2013 8:00:37 PM UTC+1, lamb ele wrote:

Hi guys:

  I'm very new to selenium and have been trying to learn its python package by running scripts found on its documentation website: http://selenium.googlecode.com/svn/trunk/docs/api/py/index.html. But I got the following error as soon as I try to set up a firefox browser object:

from selenium import webdriver

from selenium.common.exceptions import NoSuchElementException

from selenium.webdriver.common.keys import Keys

browser = webdriver.Firefox()

Traceback (most recent call last):

  File "<pyshell#3>", line 1, in <module>

    browser = webdriver.Firefox()

  File "C:\Python27\lib\site-packages\selenium\webdriver\firefox\webdriver.py", line 61, in __init__

    self.binary, timeout),

  File "C:\Python27\lib\site-packages\selenium\webdriver\firefox\extension_connection.py", line 47, in __init__

    self.binary.launch_browser(self.profile)

  File "C:\Python27\lib\site-packages\selenium\webdriver\firefox\firefox_binary.py", line 50, in launch_browser

    self._start_from_profile_path(self.profile.path)

  File "C:\Python27\lib\site-packages\selenium\webdriver\firefox\firefox_binary.py", line 73, in _start_from_profile_path

    env=self._firefox_env).communicate()

  File "C:\Python27\lib\subprocess.py", line 679, in __init__

    errread, errwrite)

  File "C:\Python27\lib\subprocess.py", line 893, in _execute_child

    startupinfo)

WindowsError: [Error 87] The parameter is incorrect

I ran into this this morning and the problem was that selenium couldn't find the path to firefox.exe.

Try adding it to your system PATH.

Or you can hardcode the path in your test script. See 

 http://stackoverflow.com/questions/17580730/python-selenium-error-when-trying-to-launch-firefox 

Hope that helps,

Kieran

[Вадим Семенов]

Could you please help me - i can not to set up driver - i get error Windows error 87, i saw solution to add path to firefox, i have one: >set PATH
C:\Program Files (x86)\Mozilla Firefox;C:\PhantomJs\bin
But i get that error
>>> driver = webdriver.PhantomJS(executable_path='')

Traceback (most recent call last):

File "<stdin>", line 1, in <module>
File "C:\Python27\lib\site-packages\selenium\webdriver\phantomjs\webdriver.py"
, line 52, in __init__
self.service.start()
File "C:\Python27\lib\site-packages\selenium\webdriver\common\service.py", lin
e 64, in start
stdout=self.log_file, stderr=self.log_file)
File "C:\Python27\lib\subprocess.py", line 710, in __init__
errread, errwrite)
File "C:\Python27\lib\subprocess.py", line 958, in _execute_child

startupinfo)
WindowsError: [Error 87] The parameter is incorrect

воскресенье, 13 октября 2013 г., 12:04:43 UTC+3 пользователь Kieran Tully написал: