脚本:(打开火狐浏览器,进入百度网页,搜索selenium)
from selenium import webdriver browser = webdriver.Firefox(); browser.get("http://www.baidu.com"); browser.find_element_by_id("kw").send_keys("selenium"); browser.find_element_by_id("su").click(); browser.quit();
执行脚本报错1:
Traceback (most recent call last): File "D:2017programming languagepythoninstallPathlibsite-packagesseleniumwebdrivercommonservice.py", line 74, in start stdout=self.log_file, stderr=self.log_file) File "D:2017programming languagepythoninstallPathlibsubprocess.py", line 707, in __init__ restore_signals, start_new_session) File "D:2017programming languagepythoninstallPathlibsubprocess.py", line 990, in _execute_child startupinfo) FileNotFoundError: [WinError 2] 系统找不到指定的文件。 During handling of the above exception, another exception occurred: Traceback (most recent call last): File "D:2017programming languagepythoninstallPathScriptsaidu.py", line 3, in <module> browser = webdriver.Firefox(); File "D:2017programming languagepythoninstallPathlibsite-packagesseleniumwebdriverfirefoxwebdriver.py", line 142, in __init__ self.service.start() File "D:2017programming languagepythoninstallPathlibsite-packagesseleniumwebdrivercommonservice.py", line 81, in start os.path.basename(self.path), self.start_error_message) selenium.common.exceptions.WebDriverException: Message: 'geckodriver' executable needs to be in PATH.
这里提到geckodriver驱动,selenium3.x中,firefox浏览器驱动独立,需要单独安装;
解决方法:下载geckodriver驱动,将其放入python安装路径中,确保path中已添加该路径;
再次执行脚本,报错2:
Traceback (most recent call last): File "D:2017programming languagepythoninstallPathScriptsaidu.py", line 3, in <module> browser = webdriver.Firefox(); File "D:2017programming languagepythoninstallPathlibsite-packagesseleniumwebdriverfirefoxwebdriver.py", line 152, in __init__ keep_alive=True) File "D:2017programming languagepythoninstallPathlibsite-packagesseleniumwebdriver emotewebdriver.py", line 98, in __init__ self.start_session(desired_capabilities, browser_profile) File "D:2017programming languagepythoninstallPathlibsite-packagesseleniumwebdriver emotewebdriver.py", line 188, in start_session response = self.execute(Command.NEW_SESSION, parameters) File "D:2017programming languagepythoninstallPathlibsite-packagesseleniumwebdriver emotewebdriver.py", line 256, in execute self.error_handler.check_response(response) File "D:2017programming languagepythoninstallPathlibsite-packagesseleniumwebdriver emoteerrorhandler.py", line 194, in check_response raise exception_class(message, screen, stacktrace) selenium.common.exceptions.WebDriverException: Message: Unable to find a matching set of capabilities
解决方法:
1. 检查本机java版本,selenium3.x只支持java8版本以上,这里符合要求;
2. geckodriver版本是v0.16.1 ,firefox浏览器版本是45,卸载firefox,安装最新版本的firefox版本53;
运行脚本,可以正常执行。
脚本:(打开谷歌浏览器,进入百度网页,搜索selenium)
from selenium import webdriver browser = webdriver.Chrome(); browser.get("http://www.baidu.com"); browser.find_element_by_id("kw").send_keys("selenium"); browser.find_element_by_id("su").click(); browser.quit();
脚本执行报错:
Traceback (most recent call last): File "D:2017programming languagepythoninstallPathScriptsaidu.py", line 4, in <module> browser = webdriver.Chrome(); File "D:2017programming languagepythoninstallPathlibsite-packagesseleniumwebdriverchromewebdriver.py", line 69, in __init__ desired_capabilities=desired_capabilities) File "D:2017programming languagepythoninstallPathlibsite-packagesseleniumwebdriver emotewebdriver.py", line 98, in __init__ self.start_session(desired_capabilities, browser_profile) File "D:2017programming languagepythoninstallPathlibsite-packagesseleniumwebdriver emotewebdriver.py", line 188, in start_session response = self.execute(Command.NEW_SESSION, parameters) File "D:2017programming languagepythoninstallPathlibsite-packagesseleniumwebdriver emotewebdriver.py", line 256, in execute self.error_handler.check_response(response) File "D:2017programming languagepythoninstallPathlibsite-packagesseleniumwebdriver emoteerrorhandler.py", line 194, in check_response raise exception_class(message, screen, stacktrace) selenium.common.exceptions.WebDriverException: Message: unknown error: unrecognized Blink revision: fcbc16eadeff40b48fbd6b4694fb8487aededbc2 (Driver info: chromedriver=2.10.267521,platform=Windows NT 6.1 SP1 x86)
解决方法: chromedriver与chrome版本不匹配,安装与当前chrome浏览器版本匹配的驱动。
下图是转载hui_yong的博客,详细介绍了驱动和浏览器版本的支持情况,可供参考。