Maven won't run my Project : Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.2.1:exec

Question

I can\'t run the Maven Netbeans JavaFX example :

Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.2.1:exe         


        

Answer 1

Maven needs to be able to access various Maven repositories in order to download artifacts to the local repository. If your local system is accessing the Internet through a proxy host, you might need to explicitly specify the proxy settings for Maven by editing the Maven settings.xml file. Maven builds ignore the IDE proxy settings that are set in the Options window. For many common cases, just passing -Djava.net.useSystemProxies=true to Maven should suffice to download artifacts through the system's configured proxy. NetBeans 7.1 will offer to configure this flag for you if it detects a possible proxy problem. https://netbeans.org/bugzilla/show_bug.cgi?id=194916 has discussion.

Answer 2

I solved this issue with right click on project -> Set as Main Project.

Answer 3

A solution which worked in my case is:
  1. Go to the module having Main class.
  2. Right click on pom.xml under this module.
  3. Select "Run Maven" -> "UpdateSnapshots"

Answer 4

1. what's happening? you haven' shown much of the output to be able to decide. if you are using netbeans 7.4, try disabling Compile on Save.

2. to enable debug output, either run Custom > Goals... action from project popup or after running a regular build, click the Rerun with options action from the output's toolbar

Answer 5

Try to run Maven from the command line or type "-X" in the text field - you can't break anything this way, at the worst, you'll get an error (I don't have Netbeans; in Eclipse, there is a checkbox "Debug" for this).

When running with debug output enabled, you should see the paths which the exec-maven-plugin plugin uses.

The next step would then be to copy the command into a command prompt or terminal and execute it manually to see if you get a useful error message there.

Answer 6

Restart Netbeans & it solved my problem.