当 URL 错误时，PhantomJS 不返回错误（python）

Question

我在 python 中使用 selenium，尤其是 PhantomJS 问题是当我发送错误的 URL 时，不会发生错误 而firefox驱动程序发现错误

from selenium import webdriver
from selenium.common.exceptions import TimeoutException, 
NoSuchElementException
from selenium.webdriver.support import expected_conditions as EC

driver = webdriver.PhantomJS()
driver.get("drr,.gh")

我想知道我的程序如何识别错误的 URL

这是我在这里的第一篇文章，如果我犯了错误，我深表歉意，我也为我的英语道歉

谢谢

Answer 1

当我们通过 GeckoDriver 或 ChromeDriver 向 get() 方法提供 Malformed URL 作为参数时 我们确实看到一个适当的异常显示为：

selenium.common.exceptions.WebDriverException: Message: Malformed URL: drr,.gh is not a valid URL.

但是，当通过 PhantomJSDriver 从日志中将 Malformed URL 作为参数提供给 get() 方法时，似乎是验证缺少正确格式的URL 并且 PhantomJSDriver 继续尝试浏览到它从未成功的URL，如下所示：

[INFO  - 2017-12-14T08:13:37.981Z] GhostDriver - Main - running on port 2585
[INFO  - 2017-12-14T08:13:39.482Z] Session [b0debdb0-e0a6-11e7-ad4b-79a57b4a1a11] - page.settings - {"XSSAuditingEnabled":false,"javascriptCanCloseWindows":true,"javascriptCanOpenWindows":true,"javascriptEnabled":true,"loadImages":true,"localToRemoteUrlAccessEnabled":false,"userAgent":"Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/538.1 (KHTML, like Gecko) PhantomJS/2.1.1 Safari/538.1","webSecurityEnabled":true}
[INFO  - 2017-12-14T08:13:39.482Z] Session [b0debdb0-e0a6-11e7-ad4b-79a57b4a1a11] - page.customHeaders:  - {}
[INFO  - 2017-12-14T08:13:39.482Z] Session [b0debdb0-e0a6-11e7-ad4b-79a57b4a1a11] - Session.negotiatedCapabilities - {"browserName":"phantomjs","version":"2.1.1","driverName":"ghostdriver","driverVersion":"1.2.0","platform":"windows-8-32bit","javascriptEnabled":true,"takesScreenshot":true,"handlesAlerts":false,"databaseEnabled":false,"locationContextEnabled":false,"applicationCacheEnabled":false,"browserConnectionEnabled":false,"cssSelectorsEnabled":true,"webStorageEnabled":false,"rotatable":false,"acceptSslCerts":false,"nativeEvents":true,"proxy":{"proxyType":"direct"}}
[INFO  - 2017-12-14T08:13:39.482Z] SessionManagerReqHand - _postNewSessionCommand - New Session Created: b0debdb0-e0a6-11e7-ad4b-79a57b4a1a11

解决办法：

作为一种解决方案，我们可以将 Malformed URL 作为参数的传递概括为 get() 方法作为 Unreachable Destination你可以诱导 set_page_load_timeout(seconds) 如下：

from selenium import webdriver

driver = webdriver.PhantomJS(executable_path=r'C:\\Utility\\phantomjs-2.1.1-windows\\bin\\phantomjs.exe')
driver.set_page_load_timeout(2)
driver.get("drr,.gh")

如果发生 page_load_timeout，您将看到以下日志消息：

[ERROR - 2017-12-14T08:25:43.994Z] RouterReqHand - _handle.error - {"name":"Missing Command Parameter","message":"{\"headers\":{\"Accept\":\"application/json\",\"Accept-Encoding\":\"identity\",\"Connection\":\"close\",\"Content-Length\":\"71\",\"Content-Type\":\"application/json;charset=UTF-8\",\"Host\":\"127.0.0.1:2650\",\"User-Agent\":\"Python http auth\"},\"httpVersion\":\"1.1\",\"method\":\"POST\",\"post\":\"{\\\"pageLoad\\\": 2000, \\\"sessionId\\\": \\\"60b5bc60-e0a8-11e7-bb6f-8df56dd28746\\\"}\",\"url\":\"/timeouts\",\"urlParsed\":{\"anchor\":\"\",\"query\":\"\",\"file\":\"timeouts\",\"directory\":\"/\",\"path\":\"/timeouts\",\"relative\":\"/timeouts\",\"port\":\"\",\"host\":\"\",\"password\":\"\",\"user\":\"\",\"userInfo\":\"\",\"authority\":\"\",\"protocol\":\"\",\"source\":\"/timeouts\",\"queryKey\":{},\"chunks\":[\"timeouts\"]},\"urlOriginal\":\"/session/60b5bc60-e0a8-11e7-bb6f-8df56dd28746/timeouts\"}","line":546,"sourceURL":"phantomjs://code/session_request_handler.js","stack":"_postTimeout@phantomjs://code/session_request_handler.js:546:73\n_handle@phantomjs://code/session_request_handler.js:148:25\n_reroute@phantomjs://code/request_handler.js:61:20\n_handle@phantomjs://code/router_request_handler.js:78:46"}

  phantomjs://platform/console++.js:263 in error

您可以在此处找到有关set_page_load_timeout() 方法的详细讨论。