[MJAR-97] Using <addClasspath> when you have no dependencies fails with FileNotFoundException

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 2.2
• Environment: Maven version: 2.0.8; Java version: 1.6.0_01; OS name: "windows xp" version: "5.1" arch: "x86" Family: "windows"
• Assignee: Unassigned
• Reporter: Wim Deblauwe
• Created: 23/Jan/08 07:29
• Updated: 28/Oct/09 13:18
• Resolved: 28/Oct/09 13:18

Description

When you have no dependencies in your project and configure <addClasspath>true</addClasspath> for the jar plugin, then maven exits with a strange error message:

Embedded error: Problem creating jar: C:\personal\mytool\target\classes (Access is denied)

If I run with -e, you can see that the classes directory is trying to be opened like it is a file:

[INFO] Trace
org.apache.maven.lifecycle.LifecycleExecutionException: Error assembling JAR
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:564)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:480)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:459)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:311)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:278)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:143)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:333)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:126)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:282)
        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: Error assembling JAR
        at org.apache.maven.plugin.jar.AbstractJarMojo.createArchive(AbstractJarMojo.java:225)
        at org.apache.maven.plugin.jar.AbstractJarMojo.execute(AbstractJarMojo.java:237)
        at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:447)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:539)
        ... 16 more
Caused by: org.codehaus.plexus.archiver.ArchiverException: Problem creating jar:
 C:\personal\mytool\target\classes (Access is denied)
        at org.codehaus.plexus.archiver.AbstractArchiver.createArchive(AbstractArchiver.java:690)
        at org.apache.maven.archiver.MavenArchiver.createArchive(MavenArchiver.java:421)
        at org.apache.maven.plugin.jar.AbstractJarMojo.createArchive(AbstractJarMojo.java:218)
        ... 19 more
Caused by: java.io.FileNotFoundException: C:\personal\mytool\target\classes (Access is denied)
        at java.io.RandomAccessFile.open(Native Method)
        at java.io.RandomAccessFile.<init>(RandomAccessFile.java:212)
        at org.codehaus.plexus.archiver.zip.ZipFile.<init>(ZipFile.java:147)
        at org.codehaus.plexus.archiver.zip.ZipFile.<init>(ZipFile.java:132)
        at org.codehaus.plexus.archiver.jar.JarArchiver.grabFilesAndDirs(JarArchiver.java:922)
        at org.codehaus.plexus.archiver.jar.JarArchiver.createIndexList(JarArchiver.java:499)
        at org.codehaus.plexus.archiver.jar.JarArchiver.finalizeZipOutputStream(JarArchiver.java:422)
        at org.codehaus.plexus.archiver.zip.AbstractZipArchiver.execute(AbstractZipArchiver.java:245)
        at org.codehaus.plexus.archiver.AbstractArchiver.createArchive(AbstractArchiver.java:673)
        ... 21 more

The workaround it to remove the <addClasspath/> thing ofcourse, but maven should give a better error message to avoid that people spend an hour searching for processes that keep the directory busy, when there is really a configuration problem.

Issue Links

• is duplicated by: MJAR-69 When 'index' and 'addClasspath' are both true, plugin fails.