I was having the same problem yesterday. I believe some of my local maven repo artefacts were corrupted. Deleting the .m2/repository folder and re-running mvn clean package fixed it. Hope that helpsBruno
Sent from Yahoo Mail on Android On Fri, 29 Dec 2017 at 6:31, Jean-Karlo Accetta<jeankarlo.acce...@gmail.com> wrote: I'm trying to start development of a Jenkins plugin but I can't seem to get it started. I've tried following several of the tutorials on the Jenkins pages but the HPI ones end up with the console saying its deprecated and that I should use the archetypes. Those, in turn, end up giving me an error about the maven-enforcer-plugin. Here is the output when running "mvn package" on a project created the empty-plugin archetype: [INFO] Scanning for projects... [INFO] [INFO] ------------------------------------------------------------------------ [INFO] Building TODO Plugin 1.0-SNAPSHOT [INFO] ------------------------------------------------------------------------ [INFO] [INFO] --- maven-hpi-plugin:2.1:validate (default-validate) @ sample --- [INFO] [INFO] --- maven-enforcer-plugin:3.0.0-M1:display-info (display-info) @ sample --- [INFO] Maven Version: 3.5.2 [INFO] JDK Version: 9.0.1 normalized as: 9.0.1 [INFO] OS Info: Arch: x86_64 Family: mac Name: mac os x Version: 10.13.2 [INFO] [INFO] --- maven-enforcer-plugin:3.0.0-M1:enforce (display-info) @ sample --- [INFO] Restricted to JDK 1.7 yet org.kohsuke.stapler:stapler-jrebel:jar:1.253:provided contains org/kohsuke/stapler/JRebelFacet$ReloaderHook$1.class targeted to JDK 1.8 [INFO] Restricted to JDK 1.7 yet org.kohsuke.stapler:stapler-groovy:jar:1.253:provided contains org/kohsuke/stapler/jelly/groovy/Namespace.class targeted to JDK 1.8 [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 3.200 s [INFO] Finished at: 2017-12-28T12:21:11-05:00 [INFO] Final Memory: 54M/180M [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.apache.maven.plugins:maven-enforcer-plugin:3.0.0-M1:enforce (display-info) on project sample: Execution display-info of goal org.apache.maven.plugins:maven-enforcer-plugin:3.0.0-M1:enforce failed.: NullPointerException -> [Help 1] [ERROR] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException I have looked online all day since yesterday and haven't found any helpful information on how to fix this issue or how to at least work around it. I have tried setting the JAVA_HOME variable to both JDK 9.0.1 and JDK 1.8.0_152, while using Maven v3.5.2 and v3.5.0. Any help would be greatly appreciated; thanks in advance. -- You received this message because you are subscribed to the Google Groups "Jenkins Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-dev+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-dev/21f2b298-44ff-456d-9ef5-64822739be14%40googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Jenkins Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-dev+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-dev/1628811334.6136486.1514492052748%40mail.yahoo.com. For more options, visit https://groups.google.com/d/optout.
