mavenjunitmaven-3artifactoryartifact

Could not find artifact junit:junit:jar:4.12 in central

I use Artifactory.

Intranet                           |      Internet
---------------------------------------------------------------------
client <------> Artifactory <------|----> Remote repository: jcenter

When I run (after removing the .m2 content related to JUnit)

mvn clean package -U

on the client, I get the following error:

[ERROR] Failed to execute goal on project MyProject: Could not resolve dependencies for project com.company:MyProject:war:0.0.1-SNAPSHOT: Could not find artifact junit:junit:jar:4.12 in central (http://my-own-server:8081/artifactory/libs-release) -> [Help 1]

part of the following output:

[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building MyProject Maven Webapp 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
Downloading: http://my-own-server:8081/artifactory/libs-release/junit/junit/4.12/junit-4.12.pom
Downloaded: http://my-own-server:8081/artifactory/libs-release/junit/junit/4.12/junit-4.12.pom (24 KB at 164.0 KB/sec)
Downloading: http://my-own-server:8081/artifactory/libs-release/com/oracle/ojdbc7/12.1.0.1/ojdbc7-12.1.0.1.pom
[WARNING] The POM for com.oracle:ojdbc7:jar:12.1.0.1 is missing, no dependency information available
Downloading: http://my-own-server:8081/artifactory/libs-release/junit/junit/4.12/junit-4.12.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.484s
[INFO] Finished at: Thu Feb 25 17:19:01 EET 2016
[INFO] Final Memory: 8M/155M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project MyProject: Could not resolve dependencies for project com.company:MyProject:war:0.0.1-SNAPSHOT: Could not find artifact junit:junit:jar:4.12 in central (http://my-own-server:8081/artifactory/libs-release) -> [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/DependencyResolutionException

How can I fix this problem?

Details:

  1. The connection between Artifactory and the remote repository works.

    • tested from Artifactory, using the Test button
    • the other .jar files are brought into .m2/repository (E.g.: log4j-1.2.17.jar)

  2. The junit/junit/4.12 folder is created under .m2/repository, but it contains only the following files:

    • _maven.repositories
    • junit-4.12.jar.lastUpdated
    • junit-4.12.pom
    • junit-4.12.pom.sha1

  3. The jcenter remote repository contains JUnit 4.12: http://jcenter.bintray.com/junit/junit/4.12/

  4. Running 

    mvn clean package -U -X

    will show the following output

    ...
Downloading: http://my-own-server:8081/artifactory/libs-release/junit/junit/4.12/junit-4.12.jar
[DEBUG] Writing resolution tracking file C:\Users\first.last\.m2\repository\junit\junit\4.12\junit-4.12.jar.lastUpdated
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.903s
[INFO] Finished at: Thu Feb 25 17:25:51 EET 2016
[INFO] Final Memory: 9M/155M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project MyProject: Could not resolve dependencies for project com.company:MyProject:war:0.0.1-SNAPSHOT: Could not find artifact junit:junit:jar:4.12 in central (http://my-own-server:8081/artifactory/libs-release) -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal on project MyProject: Could not resolve dependencies for project com.company:MyProject:war:0.0.1-SNAPSHOT: Could not find artifact junit:junit:jar:4.12 in central (http://my-own-server:8081/artifactory/libs-release)
        at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies(LifecycleDependencyResolver.java:210)
        at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.resolveProjectDependencies(LifecycleDependencyResolver.java:117)
        at org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved(MojoExecutor.java:258)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:201)
        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:84)
        at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
        at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
        at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
        at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
        at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:497)
        at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
        at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
        at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
        at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: org.apache.maven.project.DependencyResolutionException: Could not resolve dependencies for project com.company:MyProject:war:0.0.1-SNAPSHOT: Could not find artifact junit:junit:jar:4.12 in central (http://my-own-server:8081/artifactory/libs-release)
        at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve(DefaultProjectDependenciesResolver.java:189)
        at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies(LifecycleDependencyResolver.java:185)
        ... 22 more
Caused by: org.sonatype.aether.resolution.DependencyResolutionException: Could not find artifact junit:junit:jar:4.12 in central (http://my-own-server:8081/artifactory/libs-release)
        at org.sonatype.aether.impl.internal.DefaultRepositorySystem.resolveDependencies(DefaultRepositorySystem.java:375)
        at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve(DefaultProjectDependenciesResolver.java:183)
        ... 23 more
Caused by: org.sonatype.aether.resolution.ArtifactResolutionException: Could not find artifact junit:junit:jar:4.12 in central (http://my-own-server:8081/artifactory/libs-release)
        at org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:538)
        at org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:216)
        at org.sonatype.aether.impl.internal.DefaultRepositorySystem.resolveDependencies(DefaultRepositorySystem.java:358)
        ... 24 more
Caused by: org.sonatype.aether.transfer.ArtifactNotFoundException: Could not find artifact junit:junit:jar:4.12 in central (http://my-own-server:8081/artifactory/libs-release)
        at org.sonatype.aether.connector.wagon.WagonRepositoryConnector$4.wrap(WagonRepositoryConnector.java:947)
        at org.sonatype.aether.connector.wagon.WagonRepositoryConnector$4.wrap(WagonRepositoryConnector.java:941)
        at org.sonatype.aether.connector.wagon.WagonRepositoryConnector$GetTask.run(WagonRepositoryConnector.java:669)
        at org.sonatype.aether.util.concurrency.RunnableErrorForwarder$1.run(RunnableErrorForwarder.java:60)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
[ERROR]
[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/DependencyResolutionException

  5. If I upload manually the junit-4.12.jar file in http://my-own-server:8081/artifactory/webapp/#/artifacts/browse/tree/General/libs-release-local , it works, but I'd like to keep that folder only for the files that are not in the official remote repositories (like ojdbc7.jar).

  6. The following URL http://my-own-server:8081/artifactory/libs-release/junit/junit/4.12/junit-4.12.jar?trace contains:

    Request ID: ...
Repo Path ID: libs-release:junit/junit/4.12/junit-4.12.jar
Method Name: GET
User: admin
Time: 2016-02-25T18:02:35.664+02:00
Thread: http-nio-8081-exec-346
Steps: 
2016-02-25T18:02:35.664+02:00 Received request
2016-02-25T18:02:35.664+02:00 Request source = <ip>, Last modified = 01-01-70 01:59:59 +02:00, If modified since = -1, Thread name = http-nio-8081-exec-346
2016-02-25T18:02:35.664+02:00 Executing any BeforeDownloadRequest user plugins that may exist
2016-02-25T18:02:35.664+02:00 Retrieving info
2016-02-25T18:02:35.664+02:00 Consulting the virtual repo download strategy
2016-02-25T18:02:35.664+02:00 Trying to retrieve resource info from the local storage
2016-02-25T18:02:35.664+02:00 Unable to find resource in libs-release:junit/junit/4.12/junit-4.12.jar
2016-02-25T18:02:35.664+02:00 Searching for info in aggregated repositories
2016-02-25T18:02:35.664+02:00 Preparing list of aggregated repositories to search in
2016-02-25T18:02:35.664+02:00 Appending the virtual repository 'libs-release'
2016-02-25T18:02:35.664+02:00 Appending the virtual repository 'libs-release'
2016-02-25T18:02:35.664+02:00 Appending the virtual repository 'libs-release'
2016-02-25T18:02:35.664+02:00 Appending collective local repositories
2016-02-25T18:02:35.664+02:00 Appending collective local cache repositories
2016-02-25T18:02:35.664+02:00 Appending collective remote repositories
2016-02-25T18:02:35.664+02:00 Intercepting info request with 'MavenMetadataInterceptor'
2016-02-25T18:02:35.664+02:00 Intercepting info request with 'PomInterceptor'
2016-02-25T18:02:35.664+02:00 Processing request as a release resource
2016-02-25T18:02:35.664+02:00 Searching for the resource within libs-release-local
2016-02-25T18:02:35.664+02:00 Unable to find resource in libs-release-local:junit/junit/4.12/junit-4.12.jar
2016-02-25T18:02:35.664+02:00 Searching for the resource within ext-release-local
2016-02-25T18:02:35.664+02:00 Unable to find resource in ext-release-local:junit/junit/4.12/junit-4.12.jar
2016-02-25T18:02:35.664+02:00 Searching for the resource within jcenter-cache
2016-02-25T18:02:35.664+02:00 Unable to find resource in jcenter-cache:junit/junit/4.12/junit-4.12.jar
2016-02-25T18:02:35.664+02:00 Searching for the resource within jcenter
2016-02-25T18:02:35.664+02:00 Returning an unfound resource
2016-02-25T18:02:35.664+02:00 Requested resource is found = false
2016-02-25T18:02:35.664+02:00 Request is HEAD = false
2016-02-25T18:02:35.664+02:00 Request is for a checksum = false
2016-02-25T18:02:35.664+02:00 Target repository is not remote or doesn't store locally = true
2016-02-25T18:02:35.664+02:00 Requested resource was not modified = false
2016-02-25T18:02:35.664+02:00 Responding with unfound resource
2016-02-25T18:02:35.664+02:00 Setting default response status to '404' reason to 'Resource not found'
2016-02-25T18:02:35.664+02:00 Response is an instance of UnfoundRepoResourceReason
2016-02-25T18:02:35.664+02:00 Configured to hide un-authorized resources = false
2016-02-25T18:02:35.664+02:00 Original response status is auth related = false
2016-02-25T18:02:35.664+02:00 Using original response status of '404' and message 'Could not find resource'
2016-02-25T18:02:35.664+02:00 Sending error with status 404 and message 'Could not find resource'
2016-02-25T18:02:35.664+02:00 Executing any AfterDownloadErrorAction user plugins that may exist
2016-02-25T18:02:35.664+02:00 Response code wasn't modified by the user plugins
2016-02-25T18:02:35.664+02:00 Sending response with the status '404' and the message 'Could not find resource'

  7. My pom.xml contains:

    <dependencies>
    <!-- JUnit -->
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.12</version>
        <scope>test</scope>
    </dependency>
    ...
</dependencies>

  8. Software versions:

    • Artifactory Version 4.5.1
    • Apache Maven 3.0.5
Solution

  • Looks like Artifactory have a missed retrieval cached in the jcenter-cache. If Artifactory failed to get junit from JCenter for some reason (for example a timeout) it will cache this failure for the period configured in the "Missed Retrieval Cache Period" property of the remote repository.
    You can clear this and force Artifactory to try and retrieve the artifact again by zapping the cache.

    Applied for this situation:

    1. Go to Artifacts > Artifact Repository Browser > jcenter-cache > junit/junit > 4.12

      or just click on

      http://my-own-server:8081/artifactory/webapp/#/artifacts/browse/tree/General/jcenter-cache/junit/junit/4.12

    2. Right click on 4.12 > Zap Cache:

      right click and Zap Cache