I've tracked it down to the maven-war-plugin and submitted a bug there https://issues.apache.org/jira/browse/MWAR-439
Thanks -- [image: http://www.ekotrope.com/] <http://www.ekotrope.com/> *Ben DeLillo * *Founder & Staff Software Engineer * 585 857 9525 | b...@ekotrope.com www.ekotrope.com On Mon, Nov 2, 2020 at 2:18 PM Benjamin DeLillo <b...@ekotrope.com> wrote: > During a project build, an error is surfaced in eclipse as follows: > > Execution default of goal > org.apache.maven.plugins:maven-war-plugin:3.3.1:exploded failed. > (org.apache.maven.plugins:maven-war-plugin:3.3.1:exploded:default:process-resources) > > The stack trace for this error is > > org.apache.maven.plugin.PluginExecutionException: Execution default of > goal org.apache.maven.plugins:maven-war-plugin:3.3.1:exploded failed. > at > org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:148) > at > org.eclipse.m2e.core.internal.embedder.MavenImpl.execute(MavenImpl.java:332) > at > org.eclipse.m2e.core.internal.embedder.MavenImpl.lambda$8(MavenImpl.java:1380) > at > org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:179) > at > org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:114) > at > org.eclipse.m2e.core.internal.embedder.MavenImpl.execute(MavenImpl.java:1379) > at > org.eclipse.m2e.core.project.configurator.MojoExecutionBuildParticipant.build(MojoExecutionBuildParticipant.java:54) > at > org.eclipse.m2e.core.internal.builder.MavenBuilderImpl.build(MavenBuilderImpl.java:135) > at > org.eclipse.m2e.core.internal.builder.MavenBuilder$1.method(MavenBuilder.java:169) > at > org.eclipse.m2e.core.internal.builder.MavenBuilder$1.method(MavenBuilder.java:1) > at > org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod.lambda$1(MavenBuilder.java:114) > at > org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:179) > at > org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:114) > at > org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod.lambda$0(MavenBuilder.java:105) > at > org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:179) > at > org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:153) > at > org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:101) > at > org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod.execute(MavenBuilder.java:88) > at > org.eclipse.m2e.core.internal.builder.MavenBuilder.build(MavenBuilder.java:197) > at > org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:832) > at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45) > at > org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:220) > at > org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:263) > at > org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:316) > at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45) > at > org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:319) > at > org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:371) > at > org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:392) > at > org.eclipse.core.internal.resources.Workspace.buildInternal(Workspace.java:515) > at org.eclipse.core.internal.resources.Workspace.build(Workspace.java:405) > at > org.eclipse.ui.actions.GlobalBuildAction$1.run(GlobalBuildAction.java:180) > at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) > Caused by: java.lang.NullPointerException > at > org.apache.maven.plugins.war.AbstractWarMojo$DefaultWarPackagingContext$1.visitFile(AbstractWarMojo.java:661) > at > org.apache.maven.plugins.war.AbstractWarMojo$DefaultWarPackagingContext$1.visitFile(AbstractWarMojo.java:656) > at java.base/java.nio.file.Files.walkFileTree(Files.java:2804) > at java.base/java.nio.file.Files.walkFileTree(Files.java:2876) > at > org.apache.maven.plugins.war.AbstractWarMojo$DefaultWarPackagingContext.<init>(AbstractWarMojo.java:655) > at > org.apache.maven.plugins.war.AbstractWarMojo.buildWebapp(AbstractWarMojo.java:520) > at > org.apache.maven.plugins.war.AbstractWarMojo.buildExplodedWebapp(AbstractWarMojo.java:453) > at > org.apache.maven.plugins.war.WarExplodedMojo.execute(WarExplodedMojo.java:43) > at > org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137) > ... 31 more > pom.xml /my-legacy-app line 1753 Maven Build Problem > > > I've debugged into AbstractWarMojo.visitFile, and there > session.getStartTime() is null, so the call to getTime() throws an NPE. > Attempting to track down why the start time is null led me to MavenImpl, > at which point I've gotten a bit stuck trying to > further track down the issue. I think it was pointing to something in > MavenExecutionContext, but I'm not entirely sure. > That MavenImpl and MavenExecutionContext are m2e classes is why I'm > looking for guidance on this mailing list in > particular. > > Eclipse Version: 20200910-1200 > m2e Version: 1.16.1.20200710-1008 >
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