Could not calculate build plan: Plugin org.apache.

Question

org.apache.maven.plugin.PluginResolutionException: Plugin org.apache.maven.plugins:maven-resources-plugin:2.5 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.5
    at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(DefaultPluginDependenciesResolver.java:129)
    at org.eclipse.m2e.core.internal.project.registry.EclipsePluginDependenciesResolver.resolve(EclipsePluginDependenciesResolver.java:48)
    at org.apache.maven.plugin.internal.DefaultMavenPluginManager.getPluginDescriptor(DefaultMavenPluginManager.java:142)
    at org.apache.maven.plugin.internal.DefaultMavenPluginManager.getMojoDescriptor(DefaultMavenPluginManager.java:261)
    at org.apache.maven.plugin.DefaultBuildPluginManager.getMojoDescriptor(DefaultBuildPluginManager.java:185)
    at org.apache.maven.lifecycle.internal.DefaultLifecycleExecutionPlanCalculator.setupMojoExecution(DefaultLifecycleExecutionPlanCalculator.java:152)
    at org.eclipse.m2e.core.internal.embedder.MavenImpl.setupMojoExecution(MavenImpl.java:386)
    at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.setupMojoExecution(ProjectRegistryManager.java:865)
    at org.eclipse.m2e.core.internal.project.registry.MavenProjectFacade.getMojoExecution(MavenProjectFacade.java:355)
    at org.eclipse.m2e.core.project.configurator.AbstractCustomizableLifecycleMapping.getBuildParticipants(AbstractCustomizableLifecycleMapping.java:66)
    at org.eclipse.m2e.core.project.configurator.AbstractLifecycleMapping.configure(AbstractLifecycleMapping.java:87)
    at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager.updateProjectConfiguration(ProjectConfigurationManager.java:414)
    at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager.updateProjectConfiguration(ProjectConfigurationManager.java:351)
    at org.eclipse.m2e.core.ui.internal.UpdateMavenProjectJob.runInWorkspace(UpdateMavenProjectJob.java:74)
    at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:38)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Caused by: org.sonatype.aether.resolution.ArtifactDescriptorException: Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.5
    at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:296)
    at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor(DefaultArtifactDescriptorReader.java:186)
    at org.sonatype.aether.impl.internal.DefaultRepositorySystem.readArtifactDescriptor(DefaultRepositorySystem.java:279)
    at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(DefaultPluginDependenciesResolver.java:115)

I have read where many people were able to solve this by:

• Deleting the folder from the local repository and letting it re-download it (this did not work)

• By configuring eclipse to target your maven installation instead of the embedded one as described here (this did not work)

  Could not calculate build plan :artifact org.apache.maven.plugins:maven-resources-plugin:pom:2.4.3 is not available in the local repository

I am new to Maven so please excuse any of my ignorance

This project is working on another machine, and just pulled it down from the repository on this one, with the same version of eclipse and m2e plugin installed. I have been fooling with this for over 10 hours now and it is driving me nuts (Maven has been nothing but headaches for me so far...) Any help is tremendously appreciated! Thanks in advance!

EDIT

After looking closer I did notice that it is not downloading the .jar files into the local repository... I am not sure if that is something obvious...

EDIT

I am not given the option to add Maven Dependencies to the build path.

Answer 1

Hopefully I'm not late for the party.

Encountered this using Eclipse Kepler and Maven 3.1.

The solution is to use a JDK and not a JRE for your Eclipse project. Make sure to try maven clean and test from eclipse just to download missing jars.

Answer 2

I had this problem for a long time and could not figure it out until I started looking into my system variables. Turns out I had my JAVA_HOME set to the JRE, and not the JDK.

Answer 3

In addition to what @JackDev replies, what also solved my problem was to

1) Install the jdk under directory with no spaces:

C:/Java

Instead of

C:/Program Files/Java

This is a known issue in Windows. I fixed JAVA_HOME as well

2) Install maven as in Java case, under C:/Maven. Fixed the M2_HOME accordingly.

3) I java 7 and java 8 on my laptop. So I defined the jvm using eclipse.ini. This is not a mandatory step if you don't have -vm entry in your eclipse.ini. I updated:

C:/Java/jdk1.7.0_79/jre/bin/javaw.exe

Instead of:

C:/Java/jdk1.7.0_79/bin/javaw.exe

Good luck

Answer 4

You should check Force Update Snapshots/Releases when updating project with maven.It worked for me :-).

Answer 5

Most people will tell you to check your proxy settings or delete and re-add artifacts, but I will stay away from that and give another suggestion in case that doesn't turn out to be your problem. It could be your mirror settings.

If you use maven at the office then there's a good chance maven is configured to look for your company's internal maven repository. If you're doing some work from home and you are not connected to the network this could be the problem. An obvious solution might be VPN to the office to get visibility to this repo. Another way around this is to add another mirror site to your /User/.m2/settings.xml file so if it fails to find it on your office network it will try public repo.

<mirror>
    <id>Central</id>
    <url>http://repo1.maven.org/maven2</url>
    <mirrorOf>central</mirrorOf>
    <!-- United States, St. Louis-->
</mirror>

For other maven repositories take a look here: http://docs.codehaus.org/display/MAVENUSER/Mirrors+Repositories

Answer 6

i faced the same issue while using eclipse kepler and maven version 3.2,

while building the project, it showed me the same error in eclipse

there are two versions (2.5 and 2.6) of plugin under

.m2/repository/org/apache/maven/plugins/maven-resources-plugin/

i removed 2.5 version then it worked for me