Unable to find/resolve artifact with maven-dependency-plugin

[marioja]

When trying to create a pom file using the maven-dependency-plugin I get an error on the execution line in the pom file or in the Problem view in STS 3.8.3 when trying to copy the just built artifact to a custom location as documented in the middle of this maven documentation page. The error I get is the following (I am trying to build this artifact: net.mfjassociates.jai:jai-util:jar:1.2.12-SNAPSHOT):

Unable to find/resolve artifact. (org.apache.maven.plugins:maven-dependency-plugin:3.0.0:copy:copy-installed:verify)

org.apache.maven.plugin.MojoExecutionException: Unable to find/resolve artifact.
	at org.apache.maven.plugins.dependency.fromConfiguration.AbstractFromConfigurationMojo.getArtifact(AbstractFromConfigurationMojo.java:253)
	at org.apache.maven.plugins.dependency.fromConfiguration.AbstractFromConfigurationMojo.getProcessedArtifactItems(AbstractFromConfigurationMojo.java:169)
	at org.apache.maven.plugins.dependency.fromConfiguration.CopyMojo.doExecute(CopyMojo.java:106)
	at org.apache.maven.plugins.dependency.AbstractDependencyMojo.execute(AbstractDependencyMojo.java:143)
	at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
	at org.eclipse.m2e.core.internal.embedder.MavenImpl.execute(MavenImpl.java:331)
	at org.eclipse.m2e.core.internal.embedder.MavenImpl$11.call(MavenImpl.java:1362)
	at org.eclipse.m2e.core.internal.embedder.MavenImpl$11.call(MavenImpl.java:1)
	at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:176)
	at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:112)
	at org.eclipse.m2e.core.internal.embedder.MavenImpl.execute(MavenImpl.java:1360)
	at org.eclipse.m2e.core.project.configurator.MojoExecutionBuildParticipant.build(MojoExecutionBuildParticipant.java:52)
	at com.ianbrandt.tools.m2e.mdp.core.MdpBuildParticipant.executeMojo(MdpBuildParticipant.java:133)
	at com.ianbrandt.tools.m2e.mdp.core.MdpBuildParticipant.build(MdpBuildParticipant.java:67)
	at org.eclipse.m2e.core.internal.builder.MavenBuilderImpl.build(MavenBuilderImpl.java:137)
	at org.eclipse.m2e.core.internal.builder.MavenBuilder$1.method(MavenBuilder.java:172)
	at org.eclipse.m2e.core.internal.builder.MavenBuilder$1.method(MavenBuilder.java:1)
	at org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod$1$1.call(MavenBuilder.java:115)
	at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:176)
	at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:112)
	at org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod$1.call(MavenBuilder.java:105)
	at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:176)
	at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:151)
	at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:99)
	at org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod.execute(MavenBuilder.java:86)
	at org.eclipse.m2e.core.internal.builder.MavenBuilder.build(MavenBuilder.java:200)
	at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:735)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:206)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:246)
	at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:301)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:304)
	at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:360)
	at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:383)
	at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:144)
	at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:235)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
Caused by: org.apache.maven.shared.artifact.resolve.ArtifactResolverException: Could not find artifact net.mfjassociates.jai:jai-util:jar:1.2.12-SNAPSHOT
	at org.apache.maven.shared.artifact.resolve.internal.Maven31ArtifactResolver.resolveArtifact(Maven31ArtifactResolver.java:116)
	at org.apache.maven.shared.artifact.resolve.internal.Maven31ArtifactResolver.resolveArtifact(Maven31ArtifactResolver.java:80)
	at org.apache.maven.shared.artifact.resolve.internal.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:73)
	at org.apache.maven.plugins.dependency.fromConfiguration.AbstractFromConfigurationMojo.getArtifact(AbstractFromConfigurationMojo.java:249)
	... 37 more
Caused by: org.eclipse.aether.resolution.ArtifactResolutionException: Could not find artifact net.mfjassociates.jai:jai-util:jar:1.2.12-SNAPSHOT
	at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:444)
	at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:246)
	at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:223)
	at org.eclipse.aether.internal.impl.DefaultRepositorySystem.resolveArtifact(DefaultRepositorySystem.java:294)
	at org.apache.maven.shared.artifact.resolve.internal.Maven31ArtifactResolver.resolveArtifact(Maven31ArtifactResolver.java:108)
	... 40 more
Caused by: org.eclipse.aether.transfer.ArtifactNotFoundException: Could not find artifact net.mfjassociates.jai:jai-util:jar:1.2.12-SNAPSHOT
	at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:434)
	... 44 more

The error is not always there. It seems to always re-appear after a Maven/Update Project (alt-F5) menu command.

[marioja]

See STS issue 143 related to this issue.

[marioja]

Are you actively supporting this as the last commit is 3 years old?