org.openqa.selenium.firefox.NotConnectedException：45000 毫秒后无法连接到端口 7055 上的主机 127.0.0.1

Question

我正在尝试运行从 Selenium IDE 导出的 Junit 测试用例。我遇到了异常。我使用的是 Windows XP、Firefox 20.0.1 和 selenium-server-standalone-2.28.0.jar。运行时，会打开一个空白的 Firefox 窗口。当我关闭该窗口时，我在控制台中得到以下异常

 org.openqa.selenium.firefox.NotConnectedException: Unable to connect to host 127.0.0.1 on port 7055 after 45000 ms at
 org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:96)
 at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:142)
 at org.openqa.selenium.remote.RemoteWebDriver.(RemoteWebDriver.java:80)
 at org.openqa.selenium.firefox.FirefoxDriver.(FirefoxDriver.java:121)
 at org.openqa.selenium.firefox.FirefoxDriver.(FirefoxDriver.java:77)
 at com.dci.dids.selenium.SwamiRoleCreationTestCase.setUp(SwamiRoleCreationTestCase.java:20)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)
 at org.junit.internal.runners.BeforeAndAfterRunner.invokeMethod(BeforeAndAfterRunner.java:74)
 at org.junit.internal.runners.BeforeAndAfterRunner.runBefores(BeforeAndAfterRunner.java:50)
 at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:33)
 at org.junit.internal.runners.TestMethodRunner.runMethod(TestMethodRunner.java:75)
 at org.junit.internal.runners.TestMethodRunner.run(TestMethodRunner.java:45)
 at org.junit.internal.runners.TestClassMethodsRunner.invokeTestMethod(TestClassMethodsRunner.java:66)
 at org.junit.internal.runners.TestClassMethodsRunner.run(TestClassMethodsRunner.java:35)
 at org.junit.internal.runners.TestClassRunner$1.runUnprotected(TestClassRunner.java:42)
 at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:34)
 at org.junit.internal.runners.TestClassRunner.run(TestClassRunner.java:52)
 at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
 at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

JUnit 故障跟踪中的此异常

 org.openqa.selenium.WebDriverException: Failed to connect to binary FirefoxBinary(/usr/bin/firefox) on port 7055; process output follows: * LOG addons.xpi: startup LOG addons.xpi: Ignoring file entry whose name is not a valid add-on ID:
 /tmp/anonymous5690381165464188533webdriver-profile/extensions/webdriver-staging LOG addons.xpi: checkForChanges * LOG addons.xpi: No changes found

 System info: os.name: 'Linux', os.arch: 'i386', os.version: '3.2.0-23-generic-pae', java.version: '1.6.0_38' Driver info: driver.version:
 FirefoxDriver at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:108)
 at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:142)
 at org.openqa.selenium.remote.RemoteWebDriver.(RemoteWebDriver.java:80)
 at org.openqa.selenium.firefox.FirefoxDriver.(FirefoxDriver.java:121)
 at org.openqa.selenium.firefox.FirefoxDriver.(FirefoxDriver.java:77)
 at com.dci.dids.selenium.SwamiRoleCreationTestCase.setUp(SwamiRoleCreationTestCase.java:20)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)
 at org.junit.internal.runners.BeforeAndAfterRunner.invokeMethod(BeforeAndAfterRunner.java:74)
 at org.junit.internal.runners.BeforeAndAfterRunner.runBefores(BeforeAndAfterRunner.java:50)
 at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:33)
 at org.junit.internal.runners.TestMethodRunner.runMethod(TestMethodRunner.java:75)
 at org.junit.internal.runners.TestMethodRunner.run(TestMethodRunner.java:45)
 at org.junit.internal.runners.TestClassMethodsRunner.invokeTestMethod(TestClassMethodsRunner.java:66)
 at org.junit.internal.runners.TestClassMethodsRunner.run(TestClassMethodsRunner.java:35)
 at org.junit.internal.runners.TestClassRunner$1.runUnprotected(TestClassRunner.java:42)
 at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:34)
 at org.junit.internal.runners.TestClassRunner.run(TestClassRunner.java:52)
 at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
 at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) Caused by: org.openqa.selenium.firefox.NotConnectedException: Unable to connect to host 127.0.0.1 on port 7055 after 45000 ms at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:96) ... 25 more

 java.lang.NullPointerException at com.dci.dids.selenium.SwamiRoleCreationTestCase.tearDown(SwamiRoleCreationTestCase.java:47)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)
 at org.junit.internal.runners.BeforeAndAfterRunner.invokeMethod(BeforeAndAfterRunner.java:74)
 at org.junit.internal.runners.BeforeAndAfterRunner.runAfters(BeforeAndAfterRunner.java:65)
 at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:37)
 at org.junit.internal.runners.TestMethodRunner.runMethod(TestMethodRunner.java:75)
 at org.junit.internal.runners.TestMethodRunner.run(TestMethodRunner.java:45)
 at org.junit.internal.runners.TestClassMethodsRunner.invokeTestMethod(TestClassMethodsRunner.java:66)
 at org.junit.internal.runners.TestClassMethodsRunner.run(TestClassMethodsRunner.java:35)
 at org.junit.internal.runners.TestClassRunner$1.runUnprotected(TestClassRunner.java:42)
 at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:34)
 at org.junit.internal.runners.TestClassRunner.run(TestClassRunner.java:52)
 at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
 at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

Answer 1

更新到 selenium-server-standalone-2.44.0.jar 对我有用 (http://www.seleniumhq.org/download/)。

看来你需要浏览器、selenium-driver 和 selenium-server 的适当组合。

Ubuntu 14.04、Firefox 35.0.1 和 selenium-webdriver 2.44.0 在 Ruby on Rails 应用程序中为我工作。 自从我更新 Chrome 后，它就无法工作，即使使用了最后发布的驱动程序。

Answer 2

当 WebDriver 版本与 Firefox 版本不匹配时，java 编译器会抛出此错误。确保您的 WebDriver 和 Firefox 都是最新版本。

Answer 3

提到的解决方案都不适合我。对我有用的是使用最新的 Firefox（目前是 32.0.2）和最新的 selenium

    <dependency>
        <groupId>org.seleniumhq.selenium</groupId>
        <artifactId>selenium-java</artifactId>
        <version>2.43.1</version>
    </dependency>

2.43.1 版有效，2.42.1 无效。

Answer 4

我遇到了完全相同的问题，我通过将 Firefox 版本降级到 27.0.1 解决了这个问题

Answer 5

我刚刚在使用 maven 为 WebDriver 设置 JBehave 时遇到了这个问题。我通过以下方式强制 JBehave 使用更高版本的 selenium，这对我有用：

<dependency>
    <groupId>org.jbehave.web</groupId>
    <artifactId>jbehave-web-selenium</artifactId>
    <version>${jbehave.web.version}</version>
    <exclusions>
        <exclusion>
            <groupId>org.seleniumhq.selenium</groupId>
            <artifactId>selenium-java</artifactId>
        </exclusion>
    </exclusions>
</dependency>
<dependency>
    <groupId>org.seleniumhq.selenium</groupId>
    <artifactId>selenium-java</artifactId>
    <version>2.33.0</version>
</dependency>

Answer 6

您需要卸载当前安装的 Firefox。重新安装 FF 最低版本 18.0.1 这确实有效。

Answer 7

您的 Selenium 版本可能与您的 Firefox 版本不兼容。尝试安装较旧的 Firefox 版本。

1. 在安装旧版本之前，请进入 Firefox 并关闭自动更新选项。

   Firefox --> 选项 --> 选项 --> 高级 --> 更新 --> 检查更新，但让我选择安装它们

2. 到这里安装旧版本。 https://ftp.mozilla.org/pub/mozilla.org/firefox/releases/

   您不必卸载 Firefox，只需安装您要安装的版本即可。您可能需要尝试几个版本，直到找到合适的版本。