在设置Selenium + NodeJS时运行testingJS脚本时出错

我主要是按照这个指南在运行Ubuntu 14.04的Vagrant中设置Selenium + Node + Chrome。

Running Headless Selenium with Chrome

当我运行第6步中的确切示例时，NodeJS返回错误，而不是返回步骤7中显示的结果。

由NodeJS给出的错误：

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) 

控制台输出，由Selenium服务器提供

 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 

我已经阅读了许多其他的指南，修改了10多次，并重新安装了。 但是得到了不同的错误，这是迄今为止最有希望的错误。

在命令行中蜷缩https://www.google.com ，给出页面的完整html源代码。

预先感谢您帮助解决这个问题！

环境：Ubuntu 14.04在stream浪汉。 主机是Mac OS X Yosemite v10.10.2