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https://jira.codehaus.org/browse/MWEBSTART-143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=278990#comment-278990
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Tony Chemit commented on MWEBSTART-143:
---------------------------------------
Hi,
Could you give us a little project which shows the problem.
Thanks.
> An error occurred attempting to copy a file to the JNLP output directory.
> -------------------------------------------------------------------------
>
> Key: MWEBSTART-143
> URL: https://jira.codehaus.org/browse/MWEBSTART-143
> Project: Maven 2.x Webstart Plugin
> Issue Type: Bug
> Components: jnlp-download-servlet
> Affects Versions: 1.0-alpha-2
> Environment: Windows XP, JDK 1.6.0_17
> Reporter: Joseph Hitt
>
> When generating output in the target directory during either "mvn clean
> install" or "mvn clean" followed by "mvn install", the plexus FileUtils class
> evaluates false for both isDirectory AND isFile on one of the "unprocessed_"
> jars. This causes that code to throw IOException: Unknown file type. I
> believe this has to do with the file being non-existent at that point in the
> process. If I run "mvn install" after the failure, the build succeeds. This
> may be some multithreading or timing issue, not sure. I would love to submit
> a patch, but when I try to debug it with mvnDebug, it just works (the file
> exists at that point due to slower timing).
> <code>
> [ERROR] BUILD ERROR
> [INFO]
> ------------------------------------------------------------------------
> [INFO] An error occurred attempting to copy a file to the JNLP output
> directory.
> Embedded error: Unknown file type:
> C:\dev\Newton\trunk\Services\PdfMappingTool\target\jnlp\unprocessed_openjpa-all-2.0.0-M3.jar
> [INFO]
> ------------------------------------------------------------------------
> [INFO] Trace
> org.apache.maven.lifecycle.LifecycleExecutionException: An error occurred
> attempting to copy a file to the JNLP output directory.
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:719)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:556)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:535)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:387)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:348)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180)
> at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)
> at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
> at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
> at
> org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
> 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: An error occurred
> attempting to copy a file to the JNLP output directory.
> at
> org.codehaus.mojo.webstart.JnlpDownloadServletMojo.copyWorkingDirToOutputDir(JnlpDownloadServletMojo.java:732)
> at
> org.codehaus.mojo.webstart.JnlpDownloadServletMojo.execute(JnlpDownloadServletMojo.java:148)
> at
> org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)
> ... 17 more
> Caused by: java.io.IOException: Unknown file type:
> C:\dev\Newton\trunk\Services\PdfMappingTool\target\jnlp\unprocessed_openjpa-all-2.0.0-M3.jar
> at
> org.codehaus.plexus.util.FileUtils.copyDirectoryStructure(FileUtils.java:1846)
> at
> org.codehaus.plexus.util.FileUtils.copyDirectoryStructure(FileUtils.java:1755)
> at
> org.codehaus.mojo.webstart.JnlpDownloadServletMojo.copyWorkingDirToOutputDir(JnlpDownloadServletMojo.java:728)
> ... 20 more
> </code>
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