It works well when the another project is closed!  :super:

JIRA [email protected] wrote:
> 
> File not found - target/classes access denied
> ---------------------------------------------
> 
>                  Key: MECLIPSE-529
>                  URL: http://jira.codehaus.org/browse/MECLIPSE-529
>              Project: Maven 2.x Eclipse Plugin
>           Issue Type: Bug
>           Components: M2Eclipse support
>          Environment: Eclipse 3.4.1, Maven Integration for Eclipse 0.9.7
>             Reporter: Francisco Tena
> 
> 
> When running "Maven install" on a project which depends on another which
> depends on another one it looks like maven plugin is locking the
> "target/classes" folder into the dependant project, it works perfectly
> with the previous (0.9.6) version of m2 plugin. Probably it is happening
> with all nested projects because the ones that aren't nested are working
> great.
> 
> If you need more information about this bug just tell me. I've been
> searching all over Internet and I am not the only one who is suffering
> this bug but it seems they haven't realized yet that it is a matter of
> your last version only.
> 
> The error the plugin sends:
> Embedded error: {projectPath}\target\classes (Access denied)
> 
> 
> 
> And here it goes the trace running maven install with -e option:
> [INFO] Trace
> org.apache.maven.lifecycle.LifecycleExecutionException: Failed to copy
> file for
> artifact[org.gobiernodecanarias.ceh.controlAcceso:controlAcceso-core:jar:1.0-SNAPSHOT:compile]
>       at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:583)
>       at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:499)
>       at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:478)
>       at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:330)
>       at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:291)
>       at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:142)
>       at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:336)
>       at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:129)
>       at org.apache.maven.cli.MavenCli.main(MavenCli.java:287)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>       at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>       at java.lang.reflect.Method.invoke(Method.java:597)
>       at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
>       at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
>       at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
>       at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
> Caused by: org.apache.maven.plugin.MojoExecutionException: Failed to copy
> file for
> artifact[controlAcceso:controlAcceso-core:jar:1.0-SNAPSHOT:compile]
>       at
> org.apache.maven.plugin.war.packaging.ArtifactsPackagingTask.performPackaging(ArtifactsPackagingTask.java:99)
>       at
> org.apache.maven.plugin.war.packaging.WarProjectPackagingTask.handleArtifacts(WarProjectPackagingTask.java:151)
>       at
> org.apache.maven.plugin.war.packaging.WarProjectPackagingTask.performPackaging(WarProjectPackagingTask.java:72)
>       at
> org.apache.maven.plugin.war.AbstractWarMojo.buildWebapp(AbstractWarMojo.java:364)
>       at
> org.apache.maven.plugin.war.AbstractWarMojo.buildExplodedWebapp(AbstractWarMojo.java:317)
>       at 
> org.apache.maven.plugin.war.WarMojo.performPackaging(WarMojo.java:166)
>       at org.apache.maven.plugin.war.WarMojo.execute(WarMojo.java:130)
>       at
> org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:451)
>       at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:558)
>       ... 16 more
> Caused by: java.io.FileNotFoundException:
> C:\Java\proyectos\controlAcceso\controlAcceso-core\target\classes (Acceso
> denegado)
>       at java.io.FileInputStream.open(Native Method)
>       at java.io.FileInputStream.<init>(FileInputStream.java:106)
>       at org.codehaus.plexus.util.FileUtils.copyFile(FileUtils.java:929)
>       at
> org.apache.maven.plugin.war.packaging.AbstractWarPackagingTask.copyFile(AbstractWarPackagingTask.java:304)
>       at
> org.apache.maven.plugin.war.packaging.AbstractWarPackagingTask$1.alreadyRegistered(AbstractWarPackagingTask.java:151)
>       at
> org.apache.maven.plugin.war.util.WebappStructure.registerFile(WebappStructure.java:118)
>       at
> org.apache.maven.plugin.war.packaging.AbstractWarPackagingTask.copyFile(AbstractWarPackagingTask.java:140)
>       at
> org.apache.maven.plugin.war.packaging.ArtifactsPackagingTask.performPackaging(ArtifactsPackagingTask.java:76)
>       ... 24 more
> 
> 
> 
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>         
> 
> 

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