selenium-java depends on org.apache.commons:commons-exec but does not declare it

[dirkweinhardt]

Selenium Version: 2.53.1

org.openqa.selenium.os.UnixProcess imports and uses org.apache.commons.exec.DaemonExecutor which comes from org.apache.commons:commons-exec. selenium-java's pom.xml file does not declare a runtime dependency from org.apache.commons:commons-exec.

The Selenium parent pom.xml dependency management section lists org.apache.commons:commons-exec:1.3.

Attempting to run tests based on selenium-java results in below error if the project doesn't otherwise depend on org.apache.commons:commons-exec.

The issue can be worked around by declaring a dependency from org.apache.commons:commons-exec:1.3 in the pom.xml file of the project which also depends on selenium-java.

org.jbehave.core.failures.BeforeOrAfterFailed: Method beforeStory (annotated with @BeforeStory in class org.jbehave.web.selenium.PerStoryWebDriverSteps) failed: java.lang.NoClassDefFoundError: org/apache/commons/exec/DaemonExecutor
	at org.jbehave.core.steps.StepCreator$BeforeOrAfterStep.perform(StepCreator.java:460)
	at org.jbehave.core.embedder.StoryRunner$FineSoFar.run(StoryRunner.java:499)
        [...]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NoClassDefFoundError: org/apache/commons/exec/DaemonExecutor
	at org.openqa.selenium.os.UnixProcess.<init>(UnixProcess.java:52)
	at org.openqa.selenium.os.CommandLine.<init>(CommandLine.java:47)
	at org.openqa.selenium.firefox.FirefoxBinary.startProfile(FirefoxBinary.java:97)
	at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:100)
	at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:271)
	at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:119)
        [...]
	at org.jbehave.core.steps.StepCreator$BeforeOrAfterStep.perform(StepCreator.java:458)
	... 12 more
Caused by: java.lang.ClassNotFoundException: org.apache.commons.exec.DaemonExecutor
	at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
        [...]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
	... 32 more

[lukeis]

it is listed in selenium-remote-driver package

http://repo1.maven.org/maven2/org/seleniumhq/selenium/selenium-remote-driver/3.0.1/selenium-remote-driver-3.0.1.pom

which is a transitive dependency of selenium-java.

try running mvn dependency:tree to see what may be going on. For further support please post on the users mailing list - https://groups.google.com/forum/#!forum/selenium-users