您好，我开始在智能IDEA中将WebDriver与Java一起使用。我通过Maven导入了Selenium，并在Selenium网页中提供的代码中添加了依赖项。我下载了geckodriver并更新了Windows路径。我开始编写代码，但是得到的输出对我来说似乎是个错误。有人可以帮我了解发生了什么吗？
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
public class firstTry {
public static void main (String [] args){
WebDriver driver = new FirefoxDriver();
driver.quit();
}
}
Firefox可以正常打开和关闭，但是在控制台中，我的输出对我来说似乎是错误的。如下:
1522649487586 geckodriver INFO geckodriver 0.20.0
1522649487598 geckodriver INFO Listening on 127.0.0.1:31435
1522649488194 mozrunner::runner INFO Running command: "C:\\Program Files\\Mozilla Firefox\\firefox.exe" "-marionette" "-profile" "C:\\Users\\Lolaika\\AppData\\Local\\Temp\\rust_mozprofile.0neo1vgzqEe7"
Unable to read VR Path Registry from C:\Users\Lolaika\AppData\Local\openvr\openvrpaths.vrpath
1522649490188 Marionette INFO Enabled via --marionette
Unable to read VR Path Registry from C:\Users\Lolaika\AppData\Local\openvr\openvrpaths.vrpath
Unable to read VR Path Registry from C:\Users\Lolaika\AppData\Local\openvr\openvrpaths.vrpath
Unable to read VR Path Registry from C:\Users\Lolaika\AppData\Local\openvr\openvrpaths.vrpath
1522649494926 Marionette INFO Listening on port 54726
1522649495670 Marionette WARN TLS certificate errors will be ignored for this session
abr 02, 2018 1:11:35 A.M. org.openqa.selenium.remote.ProtocolHandshake createSession
INFORMACIÓN: Detected dialect: W3C
1522649495872 addons.xpi WARN Exception running bootstrap method shutdown on activity-stream@mozilla.org: [Exception... "Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIObserverService.removeObserver]" nsresult: "0x80004005 (NS_ERROR_FAILURE)" location: "JS frame :: resource://activity-stream/lib/SnippetsFeed.jsm :: uninit :: line 125" data: no] Stack trace: uninit()@resource://activity-stream/lib/SnippetsFeed.jsm:125 < onAction()@resource://activity-stream/lib/SnippetsFeed.jsm:141 < _middleware/</<()@resource://activity-stream/lib/Store.jsm:51 < Store/this[method]()@resource://activity-stream/lib/Store.jsm:30 < uninit()@resource://activity-stream/lib/Store.jsm:153 < uninit()@resource://activity-stream/lib/ActivityStream.jsm:274 < uninit()@resource://gre/modules/addons/XPIProvider.jsm -> jar:file:///C:/Program%20Files/Mozilla%20Firefox/browser/features/activity-stream@mozilla.org.xpi!/bootstrap.js:80 < shutdown()@resource://gre/modules/addons/XPIProvider.jsm -> jar:file:///C:/Program%20Files/Mozilla%20Firefox/browser/features/activity-stream@mozilla.org.xpi!/bootstrap.js:196 < callBootstrapMethod()@resource://gre/modules/addons/XPIProvider.jsm:4419 < observe()@resource://gre/modules/addons/XPIProvider.jsm:2279 < GeckoDriver.prototype.quit()@driver.js:3270 < despatch()@server.js:557 < execute()@server.js:531 < onPacket/<()@server.js:506 < onPacket()@server.js:505 < _onJSONObjectReady/<()@transport.js:500
[Child 2272, Chrome_ChildThread] WARNING: pipe error: 109: file z:/build/build/src/ipc/chromium/src/chrome/common/ipc_channel_win.cc, line 346
[Child 2272, Chrome_ChildThread] WARNING: pipe error: 109: file z:/build/build/src/ipc/cUnable to read VR Path Registry from C:\Users\Lolaika\AppData\Local\openvr\openvrpaths.vrpath
Promise rejected while context is inactive: Message manager disconnected
[Parent 5308, Gecko_IOThread] WARNING: pipe error: 109: file z:/build/build/src/ipc/chromium/src/chrome/common/ipc_channel_win.cc, line 346
[Child 5336, Chrome_ChildThread] WARNING: pipe error: 109: file z:/build/build/src/ipc/chromium/src/chrome/common/ipc_channel_win.cc, line 346
[Child 5336, Chrome_ChildThread] WARNIN[Parent 5308, Gecko_IOThread] WARNING: pipe error: 109: file z:/build/build/src/ipc/chromium/src/chrome/common/ipc_channel_win.cc, line 346
[Child 8788, Chrome_ChildThread] WARNING: pipe error: 109: file z:/build/build/src/ipc/chromium/src/chrome/common/ipc_channel_win.cc, line 346
[Child 8788, Chrome_ChildThread] WARNING: pipe error: 109*** UTM:SVC TimerManager:registerTimer called after profile-before-change notification. Ignoring timer registration for id: telemetry_modules_ping
[GPU 10500, Chrome_ChildThread] WARN
###!!! [Child][MessageChannel::SendAndWait] Error: Channel error: cannot send/recv
1522649503244 geckodriver::marionette ERROR Failed to stop browser process
Process finished with exit code 0
我该怎么做才能解决此输出问题？
最佳答案
使用GeckoDriver v0.20.0和Firefox Quantum v59.0.2(64位)，您的代码块看起来不错，并且在没有日志消息的情况下，日志堆栈跟踪也同样足够好:
Promise rejected while context is inactive: Message manager disconnected
根据Mozilla Support Forum中的讨论，此错误似乎是 Privacy Badger 。简而言之，此问题是由未正确加载/正常运行的扩展程序引起的。
解决方案
@Test。 tl; dr
Are unresolved promises rejected prior to a window.unload event?
更新
好吧，正如我在“答案”中提到的那样，按照当前的实现，您的堆栈跟踪非常合理。但是我个人没有在本地主机上看到此跟踪:
Promise rejected while context is inactive: Message manager disconnected
粗略的某些跟踪可能取决于底层操作系统。现在遍历整个Are unresolved promises rejected prior to a window.unload event?讨论的底线似乎是:
因此结论是。您很乐于领先