Using <addClasspath> when you have no dependencies fails with
FileNotFoundException
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Key: MJAR-97
URL: http://jira.codehaus.org/browse/MJAR-97
Project: Maven 2.x Jar Plugin
Issue Type: Bug
Affects Versions: 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"
Reporter: Wim Deblauwe
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:
{noformat}
Embedded error: Problem creating jar: C:\personal\mytool\target\classes (Access
is denied)
{noformat}
If I run with -e, you can see that the classes directory is trying to be opened
like it is a file:
{noformat}
[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
{noformat}
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.
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