我主要按照本指南在运行Ubuntu 14.04的Vagrant中设置Selenium + Node + Chrome。
http://www.chrisle.me/2013/08/running-headless-selenium-with-chrome/#comment-30581
当我在步骤6中运行完全示例时，NodeJS返回错误，而不是返回步骤7中显示的结果。
错误，由NodeJS提供：
vagrant@dev:/pm/setup/install/chrome$ node test.js /pm/setup/install/chrome/node_modules/selenium-webdriver/lib/goog/async/nexttick.js:39 goog.global.setTimeout(function() { throw exception; }, 0);
^ UnknownError: unknown error: unable to discover open pages (Driver info: chromedriver=2.2,platform=Linux 3.13.0-44-generic x86_64) (WARNING: The server did not provide any stacktrace information) Command duration or timeout: 20.67 seconds Build info: version: '2.35.0', revision: 'c916b9d', time: '2013-08-12 15:42:01' System info: os.name: 'Linux', os.arch: 'amd64', os.version: '3.13.0-44-generic', java.version: '1.7.0_79' Driver info: org.openqa.selenium.chrome.ChromeDriver
at new bot.Error (/pm/setup/install/chrome/node_modules/selenium-webdriver/lib/atoms/error.js:113:18)
at Object.bot.response.checkResponse (/pm/setup/install/chrome/node_modules/selenium-webdriver/lib/atoms/response.js:106:9)
at /pm/setup/install/chrome/node_modules/selenium-webdriver/lib/webdriver/webdriver.js:158:24
at promise.ControlFlow.runInFrame_ (/pm/setup/install/chrome/node_modules/selenium-webdriver/lib/webdriver/promise.js:1877:20)
at promise.Callback_.goog.defineClass.notify (/pm/setup/install/chrome/node_modules/selenium-webdriver/lib/webdriver/promise.js:2464:25)
at promise.Promise.notify_ (/pm/setup/install/chrome/node_modules/selenium-webdriver/lib/webdriver/promise.js:563:12)
at Array.forEach (native)
at Object.goog.array.forEach (/pm/setup/install/chrome/node_modules/selenium-webdriver/lib/goog/array/array.js:203:43)
at promise.Promise.notifyAll_ (/pm/setup/install/chrome/node_modules/selenium-webdriver/lib/webdriver/promise.js:552:16)
at goog.async.run.processWorkQueue [as _onTimeout] (/pm/setup/install/chrome/node_modules/selenium-webdriver/lib/goog/async/run.js:125:21) From: Task: WebDriver.createSession()
at Function.webdriver.WebDriver.acquireSession_ (/pm/setup/install/chrome/node_modules/selenium-webdriver/lib/webdriver/webdriver.js:155:22)
at Function.webdriver.WebDriver.createSession (/pm/setup/install/chrome/node_modules/selenium-webdriver/lib/webdriver/webdriver.js:129:30)
at Builder.build (/pm/setup/install/chrome/node_modules/selenium-webdriver/builder.js:416:22)
at Object.<anonymous> (/pm/setup/install/chrome/test.js:8:4)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
at startup (node.js:119:16) From: Task: WebDriver.navigate().to(http:// www.google.com)
at webdriver.WebDriver.schedule (/pm/setup/install/chrome/node_modules/selenium-webdriver/lib/webdriver/webdriver.js:360:15)
at webdriver.WebDriver.Navigation.to (/pm/setup/install/chrome/node_modules/selenium-webdriver/lib/webdriver/webdriver.js:1097:23)
at webdriver.WebDriver.get (/pm/setup/install/chrome/node_modules/selenium-webdriver/lib/webdriver/webdriver.js:791:26)
at Object.<anonymous> (/pm/setup/install/chrome/test.js:10:8)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
at startup (node.js:119:16)
Selenium Server提供的控制台输出
16:48:57.861 INFO - Executing: [new session: {browserName=chrome}] at URL: /session) 16:48:57.862 INFO - Creating a new session for Capabilities [{browserName=chrome}] Starting ChromeDriver (v2.2) on port 9110 16:49:18.529 WARN - Exception thrown java.util.concurrent.ExecutionException: org.openqa.selenium.WebDriverException: java.lang.reflect.InvocationTargetException Build info: version: '2.35.0', revision: 'c916b9d', time: '2013-08-12 15:42:01' System info: os.name: 'Linux', os.arch: 'amd64', os.version: '3.13.0-44-generic', java.version: '1.7.0_79' Driver info: driver.version: unknown
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:188)
at org.openqa.selenium.remote.server.DefaultSession.execute(DefaultSession.java:176)
at org.openqa.selenium.remote.server.DefaultSession.<init>(DefaultSession.java:112)
at org.openqa.selenium.remote.server.DefaultSession.createSession(DefaultSession.java:89)
at org.openqa.selenium.remote.server.DefaultDriverSessions.newSession(DefaultDriverSessions.java:89)
at org.openqa.selenium.remote.server.handler.NewSession.handle(NewSession.java:63)
at org.openqa.selenium.remote.server.rest.ResultConfig.handle(ResultConfig.java:205)
at org.openqa.selenium.remote.server.JsonHttpRemoteConfig.handleRequest(JsonHttpRemoteConfig.java:192)
at org.openqa.selenium.remote.server.DriverServlet.handleRequest(DriverServlet.java:201)
at org.openqa.selenium.remote.server.DriverServlet.doPost(DriverServlet.java:167)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.openqa.selenium.remote.server.DriverServlet.service(DriverServlet.java:139)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.openqa.jetty.jetty.servlet.ServletHolder.handle(ServletHolder.java:428)
at org.openqa.jetty.jetty.servlet.ServletHandler.dispatch(ServletHandler.java:677)
at org.openqa.jetty.jetty.servlet.ServletHandler.handle(ServletHandler.java:568)
at org.openqa.jetty.http.HttpContext.handle(HttpContext.java:1526)
at org.openqa.jetty.http.HttpContext.handle(HttpContext.java:1479)
at org.openqa.jetty.http.HttpServer.service(HttpServer.java:914)
at org.openqa.jetty.http.HttpConnection.service(HttpConnection.java:820)
at org.openqa.jetty.http.HttpConnection.handleNext(HttpConnection.java:986)
at org.openqa.jetty.http.HttpConnection.handle(HttpConnection.java:837)
at org.openqa.jetty.http.SocketListener.handleConnection(SocketListener.java:243)
at org.openqa.jetty.util.ThreadedServer.handle(ThreadedServer.java:357)
at org.openqa.jetty.util.ThreadPool$PoolThread.run(ThreadPool.java:534) Caused by: org.openqa.selenium.WebDriverException: java.lang.reflect.InvocationTargetException Build info: version: '2.35.0', revision: 'c916b9d', time: '2013-08-12 15:42:01' System info: os.name: 'Linux', os.arch: 'amd64', os.version: '3.13.0-44-generic', java.version: '1.7.0_79' Driver info: driver.version: unknown
at org.openqa.selenium.remote.server.DefaultDriverFactory.callConstructor(DefaultDriverFactory.java:72)
at org.openqa.selenium.remote.server.DefaultDriverFactory.newInstance(DefaultDriverFactory.java:56)
at org.openqa.selenium.remote.server.DefaultSession$BrowserCreator.call(DefaultSession.java:215)
at org.openqa.selenium.remote.server.DefaultSession$BrowserCreator.call(DefaultSession.java:1)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at org.openqa.selenium.remote.server.DefaultSession$1.run(DefaultSession.java:169)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745) Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.openqa.selenium.remote.server.DefaultDriverFactory.callConstructor(DefaultDriverFactory.java:62)
... 8 more Caused by: org.openqa.selenium.WebDriverException: unknown error: unable to discover open pages (Driver info: chromedriver=2.2,platform=Linux 3.13.0-44-generic x86_64) (WARNING: The server did not provide any stacktrace information) Command duration or timeout: 20.67 seconds Build info: version: '2.35.0', revision: 'c916b9d', time: '2013-08-12 15:42:01' System info: os.name: 'Linux', os.arch: 'amd64', os.version: '3.13.0-44-generic', java.version: '1.7.0_79' Driver info: org.openqa.selenium.chrome.ChromeDriver
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:191)
at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:145)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:554)
at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:216)
at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:111)
at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:115)
at org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:150)
at org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:129)
... 13 more 16:49:18.534 WARN - Exception: unknown error: unable to discover open pages (Driver info: chromedriver=2.2,platform=Linux 3.13.0-44-generic x86_64) (WARNING: The server did not provide any stacktrace information) Command duration or timeout: 20.67 seconds Build info: version: '2.35.0', revision: 'c916b9d', time: '2013-08-12 15:42:01' System info: os.name: 'Linux', os.arch: 'amd64', os.version: '3.13.0-44-generic', java.version: '1.7.0_79' Driver info: org.openqa.selenium.chrome.ChromeDriver
我已阅读了许多其他指南，修改过并重新安装了10次以上。但是一直有不同的错误，这是迄今为止最有希望的错误。
在命令行中卷曲https://www.google.com，给出页面的完整html源。
提前感谢您帮助解决此问题！
环境：Vagrant中的Ubuntu 14.04。主机是Mac OS X Yosemite v10.10.2