Issue
We have observed recently that our builds do not publish to Sonar anymore. Following is the exception Jenkins throws:
[ERROR] Failed to execute goal org.codehaus.mojo:sonar-maven-plugin:2.7.1:sonar (default-cli) on project myproject: null: MojoExecutionException: NullPointerException -> [Help 1] org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.codehaus.mojo:sonar-maven-plugin:2.7.1:sonar (default-cli) on project myproject: null at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:216) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80) at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51) at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106) at org.apache.maven.cli.MavenCli.execute(MavenCli.java:862) at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:286) at org.apache.maven.cli.MavenCli.main(MavenCli.java:197) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289) at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415) at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356) Caused by: org.apache.maven.plugin.MojoExecutionException at org.codehaus.mojo.sonar.bootstrap.ExceptionHandling.handle(ExceptionHandling.java:41) at org.codehaus.mojo.sonar.bootstrap.RunnerBootstrapper.execute(RunnerBootstrapper.java:104) at org.codehaus.mojo.sonar.SonarMojo.execute(SonarMojo.java:135) at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208) ... 20 more Caused by: java.lang.NullPointerException at org.apache.maven.artifact.versioning.ComparableVersion.parseVersion(ComparableVersion.java:358) at org.apache.maven.artifact.versioning.ComparableVersion.<init>(ComparableVersion.java:349) at org.apache.maven.artifact.versioning.DefaultArtifactVersion.parseVersion(DefaultArtifactVersion.java:112) at org.apache.maven.artifact.versioning.DefaultArtifactVersion.<init>(DefaultArtifactVersion.java:48) at org.codehaus.mojo.sonar.bootstrap.RunnerBootstrapper.isVersionPriorTo5Dot2(RunnerBootstrapper.java:189) at org.codehaus.mojo.sonar.bootstrap.RunnerBootstrapper.execute(RunnerBootstrapper.java:81) ... 23 more ... Finished: FAILURE
Resolution
The sonar-maven-plugin has a confirmed bug NullPointerException when checking server version.
This issue seems to be affecting the following versions at the moment:
-
2.7
-
2.7.1
The only solution at the moment is to force Jenkins to use version 2.6.
Force Jenkins to use the previous version of sonar-maven-plugin by entering 2.6 at
of sonar-maven-plugin.